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PLOS Digital Health logoLink to PLOS Digital Health
. 2023 May 19;2(5):e0000254. doi: 10.1371/journal.pdig.0000254

“The phone number tells us good things we didn’t know before.” Use of interactive voice response calling for improving knowledge and uptake of family planning methods among Maasai in Tanzania

Kennedy Ngowi 1,2,*,#, Perry Msoka 1,2,3,#, Benson Mtesha 1,#, Jacqueline Kwayu 1,4, Tauta Mappi 1, Krisanta Kiwango 1, Ester Kiwelu 1, Titus Mmasi 5, Aifello Sichalwe 6, Benjamin C Shayo 4,7, Eusebious Maro 4, I Marion Sumari-de Boer 1,2,8,9
Editor: Yuan Lai10
PMCID: PMC10198512  PMID: 37205646

Introduction

Maasai living in the Arusha region, Tanzania, face challenges in feeding their children because of decreasing grazing grounds for their cattle. Therefore, they requested birth control methods. Previous studies have shown that lack of knowledge about, and poor access to, family planning (FP) may worsen the situation. We developed an interactive voice response calling (IVRC) platform for Maasai and health care workers (HCW) to create a venue for communication about FP to increase knowledge and access to FP. The objective of this study was to explore the effect of the platform on knowledge, access and use of family planning methods. We applied a participatory action research approach using mixed methods for data collection to develop and pilot-test an mHealth-platform with IVRC using Maa language. We enrolled Maasai-couples and HCW in Monduli District (Esilalei ward), Arusha Region, and followed them for 20 months. A baseline assessment was done to explore knowledge about FP. Furthermore, we abstracted information on FP clinic visits. Based on that, we developed a system called Embiotishu. A toll-free number was provided to interact with the system by calling with their phone. The system offers pre-recorded voice messages with information about FP and reproductive health to educate Maasai. The system recorded the number of calls and the type of information accessed. We measured the outcome by (1) a survey investigating the knowledge of contraceptive methods before and after Embiotishu and (2) counting the number of clinic visits (2018–2020) from medical records and feedback from qualitative data for FP used among Maasai. The acceptability and feasibility were explored through focus group discussions (FGDs) with Maasai and in-depth interviews (IDIs) with HCW. We recruited 76 Maasai couples whom we interviewed during the baseline assessment. The overall knowledge of contraceptives increased significantly (p<0.005) in both men and women. The number of clinic visits rose from 137 in 2018 to 344 in 2019 and 228 in the first six months of 2020. Implants were the most prescribed family planning method, followed by injections and pills, as found in medical records. The number of incoming calls, missed calls, and questions were 24,033 over 20 months. Out of these calls, 14,547 topics were selected. The most selected topics were modern contraceptives (mainly implants, condoms, tubal ligation, and vasectomy). Natural methods of contraception (vaginal fluid observations, calendar, and temperature). Our study has shown that the IVRC system led to an improvement in knowledge about and access to contraceptives. Furthermore, it has potential to increase access to health information as well as improve dialogue between Health workers and Maasai.

Introduction

Tanzania has a relatively high fertility rate, with about 6.97 children per mother, according to the World Health Organization (WHO) [1]. In comparison, globally, the rate was 3.0 in 2013 [2]. Limited data is available on fertility rates among Maasai. Still, data from the year 2000 showed that in Tanzania, Maasai women in the age category 45–49 have a fertility rate of more than 7, and the mean number of children among married women was 6.4 [3]. In 2016, of contraceptives’ use and unmet need for family planning among married women in Tanzania was 38.4% and 22%, respectively [4]. Despite the scarcity of published data, some studies indicate that Maasai are unwilling to use family planning methods as they highly value procreation and wish to have many children. As a result, the use of contraceptives is low, and there is a high rate of unintended pregnancies [57]. Consequently, the pastoral community faces a dire challenge to provide for their children and families as grazing space has become increasingly limited.

Tanzania has many health services, including reproductive health and family planning services. However, accessibility is low in remote areas, especially in marginalized communities like the Maasai. Furthermore, Maasai may lack adequate knowledge about family planning and other reproductive health issues. For Maasai women, becoming a mother is a sign of procreation [5]. Several sexual practices are related, such as early sexual debut, female circumcision, polygamy and traditional birth outside the hospital [8]. Poor uptake of reproductive services and contraceptives among women living in rural areas in Tanzania was mentioned to be associated with sociocultural factors [9]. A study among young Maasai women in Kenya showed that the rate of family planning use is low, while there is a high rate of unintended pregnancies [7]. Further, they also found that women think family planning is only used by married women who do not want more children and that family planning methods cause side effects such as infertility and cancer.

Although, mobile phone coverage in Tanzania is extremely high, with >80%, and several mHealth programs have been deployed for family planning and reproductive health, the accessibility of such programs poses a challenge to many Maasai who are illiterate and only speak Maa, which is their tribal language [10]. These programs, such as ‘Wazazi Nipendeni’ and ‘Mobile for Reproductive Health’, are in the Kiswahili language and use SMS (Short Message Service) or text messages [1113].

Several recommendations have been made, including using Interactive voice response calling (IVRC) as a potential application to improve communication and increase knowledge on health-related issues among the low-literacy community [14]. Interactive voice response calling (IVRC) uses a toll-free number with predefined given information through spoken language and, as such, could be a way to communicate with Maasai in their language, who often have low literacy and do not quite understand the Swahili language [15].

Based on this, we explored the effect and feasibility of an IVRC system for family planning education among Maasai couples of reproductive age living in the Esilalei ward, Monduli District, in the Arusha Region. The main objective of this study was to explore the change in knowledge about, and use of, family planning methods after implementing an educational interactive voice response calling system about family planning and contraceptives for Maasai. Specific objectives were (1) to investigate whether the IVRC system improved knowledge about contraceptives, (2) to examine whether the system increased access to family planning care, (3) to determine whether the rate of contraceptive use improved, and (4) to establish whether the system was acceptable and feasible in use.

Methodology

Study design

We conducted participatory action research using mixed methods, including quantitative and qualitative approaches for data collection. This serial design consisted of a baseline assessment, development of the digital system, deployment of the system, and final assessment among Maasai using several data sources described below. The Kilimanjaro Christian Medical College Research Ethics and Review Committee (CRERC) and the National Health Research Ethics Sub-Committee (NatHREC) of Tanzania approved the study. The study was conducted in accordance with the Declaration of Helsinki.

Study area and population

We conducted our study among married Maasai couples (i.e. a husband with one of his wives) in the Esilalei ward in Monduli District, Arusha Region, Tanzania. We selected Maasai men using convenience sampling. The husband chose one of his wives to participate in the study. The ward consists of three villages: Esilalei, Losirwa, and Oltukai, and most of the population consists of the Maasai tribe. One dispensary in the ward provides family planning services, including counselling and the provision of some contraceptive methods, including oral contraceptive pills, injections, and implants. Additionally, we enrolled healthcare workers for an in-depth interview.

Study procedures

Baseline assessment

We did a baseline assessment in January and February of the year 2019. Maasai couples were enrolled by firstly screening their eligibility, i.e. if they were a couple from the Esilalei ward (husband and one of his wives), aged between 12 and 65 (age of wife <50), willing to receive IVRC and able to understand and willing to sign the informed consent document. If eligible, we extensively explained the study to them and asked for written informed consent to participate. We used the local Maasai language, Maa, to communicate with participants through our Maasai interpreters. If written informed consent was not possible, we collected thumbprints after approval to participate. The husband and wife gave consent to be part of the study if they were above 18 years. For men under 18 years, we asked consent from their father/elder, the legally acceptable representative (LAR), in addition to assent from themselves. For women under 18 years, we asked both the husband and the elder to consent, and we asked for assent from the women. Following written informed and oral consent, participants were interviewed using a structured questionnaire to assess knowledge about and use of contraceptives. Furthermore, we abstracted information on family planning clinic visits from available medical records at Esilalei dispensary and Mto-wa-Mbu health center to determine the number of clinic visits and prescribed contraceptive methods in the year before the implementation of Embiotishu (January 2018-February 2019).

Development and implementation of Embiotishu

We developed an interactive voice response calling (IVRC) system called Embiotishu.Fig 1 provides the details of IVRC content flow.The system was accessible for Maasai by calling a toll-free number. The Embiotishu (health in Maa) system was developed based on the information obtained during the basic assessment with the guidance of Tanzanian guidelines for family planning. Furthermore, several meetings were conducted with Maasai couples, local health care providers, and study consultant obstetrician gynecologists to set the criteria and identify the knowledge gap in reproductive health and the contents of the system. Texts were translated to Maa and categorized based on themes, including reproductive health, family planning, and STIs/HIV/AIDS. We created audio messages by recording the spoken texts in Maa language and loaded them into the Embiotishu system. A menu was developed for the contents and loaded in Embiotishu. Each menu item was assigned a number (e.g. 1,2,3,4) that study participants (Maasai couples) could press on their mobile phone keypad when selecting a particular item. When a study participant calls Embiotishu (s)he hears: “Welcome to Embiotishu, a programme to inform you about reproductive health and family planning. For reproductive health, press 1; for information about contraceptives, press 2; for information about family planning, press 3’. Once the IVRC system recognized the number entered, it automatically routed the request to the particular pre-recorded content. The IVRC system allows multiple requests from different users in the same call. Before the deployment of Embiotishu, we conducted seminars with both parties (Maasai and Health providers) to introduce the system. During the seminars, we did role plays to instruct users about the system, and we provided the toll-free number. Participants without a cellphone were provided with one. We deployed the system for 20 months.

Fig 1. Provides the details of IVRC content flow.

Fig 1

Final assessment

After twenty months of follow-up, we repeated the survey (S1 Appendix) to investigate the study participants’ knowledge of family planning methods (see Fig 2). We also continued the medical abstraction to explore the trend of family planning utilization in the clinic (access to care) since deploying Embiotishu (March 2019-July 2020). We conducted focus group discussions using semi-structured topic guides with Maasai couples to investigate the acceptability and feasibility of Embiotishu and to explore the knowledge and use of FP. To investigate the number of times the system has been used and which topic was mainly accessed, we explored the number of incoming calls to Embiotishu and the number of chosen menu items. The illustration of the study procedures has been described below.

Fig 2. describes the study course and duration of the study phases.

Fig 2

Data collection tools

Survey with Maasai

We administered a semi-structured questionnaire in face-to-face interviews during the baseline and final assessment among Maasai couples. Swahili or Maa language was used based on the preference of the interviewee. The questionnaire contained questions on socio-demographic characteristics, marital status, family composition, reproductive history, knowledge about specific contraceptive methods and use of contraceptives. In the final assessment, we added questions to explore their experience with the Embiotishu system. Data were collected on a paper form and entered in the REDcap database, and stored on the local server [16].

Medical records abstraction

A medical records abstraction form was developed based on the standard clinic card for family planning (Reproductive Child and Health card no.5). We collected data from medical files of the family planning clinics of Esilalei Dispensary and Mto-wa-Mbu Health Centre. The following information was collected; clinic visit date, reproductive history, current contraceptive use, and prescribed contraceptives. Data was collected in paper form, entered by trained staff in the REDCAP database directly, and stored on a local server.

FGD with Maasai couples

We conducted focus group discussions in the final assessment using a topic guide by a trained qualitative researcher using the Maasai project leaders as interpreters. The topics discussed were: (1) knowledge about the Embiotishu system, (2) “How Embiotishu changed Maasai life”, (3) knowledge about and use of family planning methods, (4) knowledge about the reproductive system, (5) knowledge about sexually transmitted diseases and (6) suggested improvements for the Embiotishu system. Discussions were done in the Maasai language with continuous translation and interaction between the researcher and interpreters in separate groups of men and women.

IDI with health care providers

We conducted in-Depth interviews with Health Care providers involved in the family planning services during the baseline to understand and obtain their views on how the Maasai know, access, and use contraceptives to contribute to the development of the Embiotishu system. Later IDIs were conducted during the final assessment among HCWs who participated in the study to explore their view on the knowledge of family planning methods among Maasai people after Embiotishu. We used semi-structured interview guides to assess (1) knowledge about contraceptives among Maasai, (2) access to family planning methods, (3) improved use of contraceptives because of Embiotishu and (4) the acceptability of the Embiotishu system.

Embiotishu system data

Incoming calls and responses (menu items) data of Embiotishu were obtained automatically via an online dashboard as illustrates in Fig 3. To access the information, we provided login credentials such as passwords and usernames to authorized users. The information that was recorded included: caller ID, information type, time, date, and call- frequencies. We extracted this information from the system in the form of graphs.

Fig 3. The distribution of selected topics on the system dashboard.

Fig 3

To gain feedback from Maasai couples about Embiotishu, we conducted interviews with semi-structured questionnaires during the final assessment among couples. The questions included their broad experience with the system, preferred topic, challenges, and recommendations to improve the Embiotishu system.

Data analysis

For quantitative data, we conducted descriptive analyses with SPSS v.27 to investigate changes and trends in knowledge and use. Data from the Embiotishu was displayed in graphs using an excel spreadsheet program to create frequency tables.

We transcribed and translated qualitative data into English. Transcripts were read and reread by PM, TM, and MS and imported into MaxQDA 2020. We created memos based on the transcripts from where we identified codes for organizing our qualitative data. We conducted a thematic framework analysis (PM) [17] with an inductive approach and used the coded transcripts to obtain different themes and subthemes. The themes were related to knowledge, access, and use of family planning methods and the acceptability and feasibility of the Embiotishu system.

To answer objective one on knowledge, we investigated with data from the survey whether the percentage of participants knowing about different contraceptive methods (‘yes’-answers) changed before and after using Embiotishu by conducting McNemar tests. In addition, to get an overall score on the knowledge, we summed knowledge about all contraceptives (‘yes’-answers being 1 point) into one score. We conducted T-tests to investigate differences in scores before and after the system’s deployment for both men and women. Furthermore, we analyzed data from the final assessment FGD and IDI by identifying themes related to knowledge about family planning methods.

To answer the second objective on access to family planning methods, we examined whether the number of clinic visits for family planning between baseline and final assessment increased. We used descriptive analysis to describe the percentage of the data from the survey.

To answer the third objective on the use of family planning methods, we investigated the difference in the use of contraceptives between baseline and final assessment with a Chi-square test. In addition, we identified themes related to the use of family planning methods discussed in the FGD.

To answer the fourth objective on the acceptability and feasibility of Embiotishu, we identified themes related to these topics from both the FGD and IDI. In addition, we descriptively analyzed data about the experience with the system from selected topics recorded by the system and the survey in the final assessment.

Results

Study population

We recruited 76 Maasai couples and we interviewed them during the baseline assessment. The mean age was 25[SD:5.9] years for women and 32.5[SD:10.5] for men. Of women, 65% had no formal education, 27% completed primary education, while 35% of men had no formal education, and 47% completed primary education. Also, 63% and 68% of women and men, were Christian. No one was employed among women, while 9% of men were employed. Other men were engaged in farming activities for income. (Table 1)

Table 1. Socio-demographic characteristics of Maasai.

Characteristics Women Men
Number Percent, % Number Percent, %
Total 76 100% 76 100%
Age (years)
    Mean [SD] 25 [5.9] 33 [10.1]
Level of education
    No formal education 50 65% 27 36%
    Some primary education 4 4% 8 10%
    Primary education 21 27% 34 45%
    Secondary education 1 1% 6 8%
    Higher education 1 1% 0 0%
    Missing 1 1% 1 1%
Literacy rate (can read Swahili) 27 36% 48 63%
Does own a cell phone 31 41% 60 79%
Employed 0 0% 7 9%
Husband has more than one wife 31 41% 33 43%
Wife Included in the study (1st 2nd 3rd)
    1st wife 15 20% - -
    2nd wife 19 25% - -
    3rd wife and more 10 12% - -
Age started to live with a partner 23 [4.8]
    Mean [SD] 17 [5.9]
Age when 1st child was born 27 [5.8]
    Mean [SD] 18 [4.1]

We held four FGDs, with 10 to 13 Maasai in each group. Two groups were Maasai women, and the other two were Maasai men. Several themes were deducted from the discussion, including (1) knowledge about contraceptives among Maasai, (2) access to family planning methods, (3) improved use of contraceptives because of Embiotishu and (4) the acceptability of the Embiotishu system. Descriptions of the themes and examples are described in the (S1 Appendix)

Knowledge about family planning and contraceptives

Table 2 describes the difference in knowledge about contraceptives before and after the implementation of Embiotishu among women and men. For women, knowledge about all contraceptives significantly increased (p<0.05). The highest increase was for knowledge about the intra-uterine device (IUD), condoms, and Lactational Amenorrhea Method. For men, it only increased for vasectomy, injection, implants, contraceptive pills, condoms, and withdrawal (p<0.05)

Table 2. Knowledge about contraceptives.

Knowing about contraceptive Women Men
Basic assessment n (%) Final assessment n (%) P-value Basic Assessment n (%) Final Assessment n (%) P-value
Tubal ligation 24(31.6) 55(72.4) <0.001 41(53.9) 42(55.3) 0.6
Vasectomy 10(13.2) 47(61.8) <0.001 12(15.8) 23(30.3) 0.03
Loop/intra-uterine device (IUD)-Mirena/Copper-T 27(35.5) 64(84.2) <0.001 58(76.3) 63(82.9) 0.013
Injection (Depo-provera) 45(59.2) 69(90.8) <0.001 57(75.0) 66(86.8) <0.001
Implants (Implanon) 50(65.8) 69(90.8) <0.001 60(78.9) 66(86.8) <0.001
Oral contraceptive pills 44(57.9) 65(85.5) <0.001 50(65.8) 62(81.6) <0.001
Condoms 23(33.3) 59(77.6) <0.001 54(71.1) 65(85.5) <0.001
Emergency contraceptives (morning-after-pill) 25(32.9) 59(77.6) <0.001 38(50.0) 41(53.9) 0.3
Cycle beads to count the days 8(10.5) 57(75) <0.001 21(27.6) 27(35.5) 0.2
Lactational Amenorrhea Method (LAM) 30(39.5) 62(81.6) <0.001 35(46.1) 24(31.6) 0.18
Calendar rhythm method 51(67.1) 62(81.6) 0.003 71(93.4) 66(86.8) 0.1
Withdrawal method 52(68.4) 64(84.2) <0.001 56(73.7) 67(88.2) 0.001

The overall knowledge of contraceptives between men and women before and after the implementation of Embiotishu increased significantly (P-value<0.001). (Table 3)

Table 3. Difference in knowledge about all contraceptive methods (sum score) before and after Embiotishu.

Gender Basic assessment mean (SD)–Sum of all contraceptive methods Final assessment mean (SD)–Sum of all contraceptive methods P-value
Women 5.0(3.2) 10.6(2.3) <0.001
Men 7.5(2.8) 9.0(1.8) <0.001

The findings from qualitative data indicated that the Embiotishu system increases the knowledge about FP among Maasai. As a result, it positively influences their attitude towards practicing family planning. This was witnessed when they stated:

“We have seen the use of Embiotishu numbers is clearer and easier to understand as it teaches us about family planning, so now we know family planning and many other things” (Male, 28 years)

The information about family planning methods in the Embiotishu system enabled Maasai couples to make a conscious effort to limit or space the number of children they have and reduce fertility. It was evidenced by the following:

“We have heard a lot of good things in the Embiotishu system, which in general are focusing on putting us in the position of being able to plan several children in our families.” (Female, 23 years)

Family planning gives knowledge of the reproductive system. It advances the health of women and children by lowering the proportion of pregnancies that could be high risk and reducing the number of unplanned pregnancies and births. One was aware of family planning benefits and was quoted as:

“And the other thing you get from it is to know the parts of Male and Female reproductive systems, to understand that you can stay for how long or some days without having sex with your wife. Such things are described, which gives us more education.” (Male, 35 years)

Another respondent said:

“And the things that are being discussed, for real, if someone decides to consider it, will help you because it tells you many things. Particularly about the female and male reproductive system and understanding your wife’s menstrual cycle.” (Male, 40 years)

From the FGDs, we found that the knowledge gained from the system among Maasai people accomplishes what they require and allows them to plan their families well. In previous days, they were staying far from their wives, worrying about having a larger number of children, which they had not planned yet. This was reported as follows:

“The calendar method is good because it has no hormones, and it will show you that she has cheated because she will get pregnant.” (Male, 55years)

Access to family planning care

In the year before the implementation of Embiotishu (2018), the number of visits for family planning methods was lower (N = 22) compared to the years after implementation in 2019 (N = 84) and 2020 (N = 214) as illustrates in Fig 4.

Fig 4. Number of family planning clinic visits per quarter per year.

Fig 4

Findings from qualitative data show that the Embiotishu system increased the perception concerning family planning. It increases the number of clinic visits. Also, family planning provides benefits to families and their personal development. One of the nurses we interviewed told us:

“Yes, the system made changes in our work because customers seem to understand well the Family Planning system through the details they already got.” (Nurse, 44 years)

Another nurse added and said:

These days, men around here realize the importance of family planning. Some even accompany their wives to the clinic.” (Nurse, 43 years)

Education introduced among Maasai people concerning family planning increased awareness of the use of contraceptives and increased availability. It is an essential factor in fertility decline. One of the participants said:

“So, if people get awareness about using contraceptives like paracetamol, if you feel pain, you can send a child to buy it at the shop. It will be easy to select several points to put boxes of condoms, and anybody who wants it may go there and pick it.” (Male, 55years)

Use of family planning methods

Out of the 76 couples interviewed before the implementation, only 26(27%) couples revealed they used contraceptive methods before Embiotishu. After implementation, 69(73%) couples revealed they used contraceptives (p<0.001).

Before and after the implementation of Embiotishu, from the medical records (see Fig 5), we saw that implant was the most prescribed family planning method from 24(3%) before to 447 (65%), followed by injection from 9(1%) to 105 (15%), condoms from zero to 47(7%) and contraceptive pills from zero to 36 (5%).

Fig 5. The distribution of selected topics.

Fig 5

Qualitative data showed that informing Maasai families about FP was associated with acceptance of family planning in terms of reducing family size and the ability to use contraceptives. Most of the Maasai indicated their perception has increased that after being educated, and they can handle their families well. This was supported:

“Yes, it is true people have changed. For example, to my side up to this stage am now, we think that if we have five children and they need to go to school, it makes us think about spacing to take care of those we already have. So, it is nice, and it makes people change their perception.” (Male, 36 years)

The acceptability of contraceptives was also accompanied by the possible choice of natural contraceptives, which also proved beneficial. The woman commented and said:

“We are no longer giving birth too much because we know family planning. Because through the Embiotishu number, we were told things to do, and these things are practical." (Female, 43 years)

This is also supported by one of the group members saying that:

“Contraceptives methods make us not to have unexpected pregnancies.” (Female, 18 years)

This was also explained when we were interviewing nurses. It was reported that:

“Yes, they tell each other this is good, you can stay with it up to five years, so it is good depending on the number of children they have.” (Nurse, 29 years)

Acceptability and feasibility of Embiotishu

Feedback from Maasai

Out of the participants (N = 152) enrolled in the study, we interviewed 105 about their experience with the system; 57(95%) of men and 48(91%) of women. Almost all men, 49(82%) and 37(74%) women, indicated the system was well understood and easy to navigate through the information. Ninety-four percent of women (N = 53) and eighty-seven percent of men(N = 42) indicated that the system performed well. The majority, 94(62%), indicated that the most interesting topics were reproductive health and contraceptive methods. Furthermore, others recommended topics related to sexually transmitted diseases and infertility to be added to Embiotishu. A few participants, 18(12%), indicated communicating with healthcare workers about information from Embiotishu.

During FGD discussions, Maasai described that the dry season causes substantial migration of the family and their animal mainly to search for water and food.

As mentioned by one participant:

“When a dry season comes like now, we are only concerned about where to get green grass and water for our animals and family. We cannot think about family planning issues or access information in Embiotishu because we are struggling here and there in search of water.” (Male, Age 45 years)

Embiotishu proved to be of advantage also to the marital relationship. This was when the marital sexual relationship was no longer limited during the lactation period. One participant mentioned:

“Embiotishu has brought us many very good things, and this is because now a person can dial that number and listen. You know, before, we did not have sex with our wives while they were still lactating. If a woman has lactated for five years, you also stay for those years without having sex with her, but right now, things have changed; when we go to the market, you come with condoms, and then you can have sex with her even if she has three or five months after giving birth.” (Male,25 years)

Another respondent shared;

“I always call the Embiotishu number seven times a day.” (Female, 45years)

The same respondent reported that:

“I always like to dial the Embiotishu number and press one. It tells you about your reproductive system in general, so you will know that this is good because it instructs you in a direction that when you follow it, you will not fall or it will not let you down.” (Female, 45 years)

Access to contraceptive contents in the Embiotishu system

We recorded a total number of 24,033 incoming calls, including missed calls, calls in which no topic was selected, and questions in the system in 20 months from 2019 to 2021 as seen in Fig 6. Out of those, 14,547 topics were selected. The highest number of calls was recorded in March, April, and May 2020.

Fig 6. The trend of calls in Embiotishu.

Fig 6

Modern contraceptives

In 400 calls, the topic of hormonal contraceptives was selected as shown Fig 7. Among those calls, in 25% implant was selected, 24% copper IUD, 18% Mirena (hormonal IUD), 4% pills (estrogen and progestogen) and 4% minipill (progestogen hormone only) were selected.

Fig 7. Access to hormonal contraceptive content in IVRC.

Fig 7

Out of those 197 calls about non-hormonal contraceptives, the barrier methods topic male condoms were selected 65 times (33%) and female condoms 40 times (20%) as shown in Fig 8. For permanent methods, tubal ligation was selected 42 times (21%), followed by vasectomy (12%).

Fig 8. Non-hormonal contraceptives.

Fig 8

Natural contraceptives

In a total of 1,376 calls, the topic of natural contraceptives was selected (see Fig 9). The most selected natural contraceptive was ‘observing of vaginal fluid’ with 441 times (33%), followed by monitoring the women’s temperature with 440 times (32%) and avoiding sex on danger days 391 times (28%). In a few calls, withdrawing the penis before ejaculation and LAM (exclusively breastfeeding) methods were selected.

Fig 9. Natural contraceptive use.

Fig 9

Discussion

Our study shows that the IVRC system is highly feasible and acceptable for improving knowledge about and using contraceptives, family planning, and sexual and reproductive health. We showed this through the survey in which knowledge about the number of family planning methods increased significantly, and the use of contraceptive methods increased after our program. We observed similar results during focus group discussions. Data from the discussions showed that implementing the Embiotishu system positively changed the Maasai attitudes towards practicing family planning. Furthermore, participants revealed that the education provided by IVRC makes them able to identify effective contraceptives. Medical abstraction results showed that the visits for family planning increased after the implementing Embiotishu. Nurses revealed that Embiotishu changed the Maasai perception concerning family planning, which resulted in men’s and women’s’ understanding of the importance of family planning. Therefore, the system has the potential to limit the number of children and spacing between children and reduce fertility.

These results are comparable to a study conducted in Uganda which showed that learning about family planning among women living along lake Victoria increased their ability to plan for their families [18]. Another study in Kenya describes that knowledge of contraceptives among pastoralists improves access to family planning and decreases the burden on the household due to the higher cost of living [19]. This was related to the study by Allegretti et al., which showed that pastoral household heads find it challenging to support larger families due to the rising demand for money, which does not match the available cash income sources [20]. Further, this was also stated by Leah et al., who found that access to reproductive health knowledge prevents unwanted pregnancies, especially among adolescents, and prevents sexually transmitted diseases and AIDS [21].

A prior study has shown that Maasai men have a negative perception of family planning because it will lower the birth rate and cause infertility. Also, Maasai believed that having many children was a sign of wealth and prestige in the community [22]. However, our study shows that Maasai were interested to use family planning and apply child spacing in order to satisfy the family’s needs including education, shelter, and food.

During the discussion, Maasai women expressed that they were empowered by Embiotishu, particularly on modern contraceptive topics regarding family planning, which led them to have a firm decision on child spacing. In addition, IVRC positively influenced their attitude towards practicing family planning because the content was more explicit and easier to understand.

These factors are also substantiated by the findings from medical records findings showing that modern implants were the most prescribed family planning method.

A previous study conducted in Tanzania described modern contraceptive use as contributing to the low rate of unintended pregnancy among Married Maasai women who felt socially pressured to bear many children as desired by their husbands or family [23]. A study from Kenya has shown that education about contraceptives empowered women and made them more aware of better decisions on contraceptive use [24]. Furthermore, few Maasai selected information about condoms and hormonal contraceptives in Embiotishu. As described in the previous studies, the sociocultural context contributes to a negative perception as Maasai men believe that using condoms leads to a waste of semen. Also, the use of hormonal contraceptives was believed to cause cancer, increase weight and kill women’s eggs (i.e. cause infertility) [5,24]. Therefore, opinions of different age groups and professionals will contribute to the implementation.

Another finding was the high volume of incoming calls to the system in certain months. It was revealed during the focus group discussions to be strongly related to the rainy season. Many areas become green for grazing the cattle, and as a result, Maasai men spend more time with their families and wives at bomas. A study in Kenya described a similar trend during the rainy season, in which Maasai men spend time on other issues such as traditional ceremonies, selling or buying cattle, and expanding their families [22].

Limitations

We conducted the study in only one village ward, and the number of participants was small. This makes the representativeness of the total Maasai population in Tanzania questionable. As Esilalei is situated in a relatively accessible area with some basic health care services, we expect that the population is not representative of the total Maasai population who live in the less accessible areas. In addition, we have not conducted an intervention study comparing results between people exposed and not exposed to Embiotishu. We can, therefore, not conclude that our intervention is effective. However, our study provides enough proof for the intervention to be investigated in a larger trial to determine its effectiveness.

Conclusion and future work

The project’s development was based on a participatory methodology whereby the Maasai community was involved in the early stages of the research by sharing their knowledge, ideas, values, and opinions. This helped us to familiarize ourselves with indigenous knowledge, challenges, and barriers which guided us to tailor the IVRC content to specific targets. In addition, using a mixed-methods approach and different data sources, we obtained rich data, which allowed us to answer the objectives effectively and gave good insight into the context of our data.

Our study has shown that the IVRC system led to an improvement in knowledge about the use of contraceptives. Embiotishu also appeared to be feasible and acceptable among the Maasai. Furthermore, it has the potential to improve access to health information. However, it is essential to consider the norms and culture of the Maasai community on the topics of family planning, reproductive health, and contraceptives. Therefore, it is relevant to incorporate all attributes related to the socio-cultural aspects of Maasai to ensure that future interventions effectively empower the Maasai community. Furthermore, the rapidly growing migration of Maasai to urban areas in recent years and mobile technology services facilitate sharing of information in a distant location. Future studies should continue to explore the effect of this digital technology for continuous advocacy of the use of contraceptives and family planning among the Maasai community in randomized controlled settings.

Supporting information

S1 Appendix. Survey on Investigating the knowledge about family planning.

(PDF)

Acknowledgments

We would firstly like to thank Voice.global for financially supporting our study under the linking and learning grant for Tanzania. We thank our research assistants from the Maasai community, Mbayani Lemkoko, Esta Mbayani, Elizabeth Morine, and Rueben Moitiko who assisted us with collecting all data during interviews and focus group discussions. We also thank our partner in this project, the African Roots Foundation, through Chris Pilley. Further, we also thank our colleagues who were involved in the proposal development and preliminary focus group discussions which were Godfrey Kisigo, Iraseni Swai, and Martha Oshosen. Lastly, we thank the participants for providing valuable and sensitive information.

Data Availability

Data are publicly available consisting of the survey, medical extraction, as well as IVCR system, are located at https://www.ebi.ac.uk/biostudies/studies/S-BSST980#.

Funding Statement

This work was supported by Voice.global grant no. A-05253-02-507496 under the linking and learning grant for Tanzania. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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PLOS Digit Health. doi: 10.1371/journal.pdig.0000254.r001

Decision Letter 0

Yuan Lai, Liliana Laranjo

3 Aug 2022

PDIG-D-22-00061

"The phone number is telling us good things which we didn’t know before.” Use of Interactive Voice Response Calling for Improving knowledge and uptake of family planning methods among Maasai in Tanzania

PLOS Digital Health

Dear Dr. Ngowi,

Thank you for submitting your manuscript to PLOS Digital Health. After careful consideration, we feel that it has merit but does not fully meet PLOS Digital Health's publication criteria as it currently stands. Therefore, we invite you to submit a revised version of the manuscript that addresses the points raised during the review process.

Please submit your revised manuscript within 60 days Oct 02 2022 11:59PM. If you will need more time than this to complete your revisions, please reply to this message or contact the journal office at digitalhealth@plos.org. When you're ready to submit your revision, log on to https://www.editorialmanager.com/pdig/ and select the 'Submissions Needing Revision' folder to locate your manuscript file.

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Yuan Lai, Ph.D.

Academic Editor

PLOS Digital Health

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Reviewer #1: Yes

Reviewer #2: Yes

Reviewer #3: Partly

--------------------

2. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #1: Yes

Reviewer #2: Yes

Reviewer #3: Yes

--------------------

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Reviewer #1: Yes

Reviewer #2: Yes

Reviewer #3: No

--------------------

4. Is the manuscript presented in an intelligible fashion and written in standard English?

PLOS Digital Health does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.

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Reviewer #2: Yes

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5. Review Comments to the Author

Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)

Reviewer #1: Dear Authors, this is great work in addressing those individuals as it helps to do further research for future. therefore try to amend the comments given in the source document then proceed accordingly.

Reviewer #2: There is no literature review, at least to show the gap between the previous studies & to show what is the the new in the current study

References are very few

Limitation & strength should be moved to conclusion and the title should be conclusion & Future work

Methodology should be reformulated, to many speech which need to be minimize

It seems that it’s a copy from PhD or MSc thesis , so it’s need to be formulated

Reviewer #3: This research article shows how digital health solutions can be applied to increase knowledge and improve health care in rural and undersupplied areas. Furthermore, the authors found a smart solution in the Interactive Voise Response (IVR) system to overcome literacy barriers. The different methodologies and outcome sources used in implementing and evaluating the IVR system raise the quality of this research.

Nevertheless, there are some concerns regarding formatting and language, completeness of the methods, data availability, figures, precision regarding the results and missing discussion points. These are described in the following.

Formatting and language: The formatting of the text is unclean in many places. There are double spaces, misplaced commas and dots, unfinished phrases (e.g. Abstract, last phrase of the results), and citation outside the phrase in the manuscript. Moreover, the manuscript should be revised concerning language and grammar before publication.

Methods:

- Please explain the study design (participatory action research using mixed methods) more deeply for non-experts in this field.

- A statement regarding the Declaration of Helsinki is missing.

- How were health care workers selected for the study? How many were included? Are nurses and health care workers the same participant group?

- In the study procedures it is stated that Maasai couples were screened for their eligibility. What are the eligibility criteria?

- Add a protocol of the semi-structured questionnaire to the supporting information or describe the relevant questions that were used for data analysis.

- Was the medical records abstraction collected for the population in general or specifically for the participants?

- Explain or cite thematic framework analysis.

- Study course: The study course and duration of study phases (deployment and development of the IVR, assessment time points) is not clearly defined. A figure could be helpful here.

Data availability: Data is not available yet.

Figures:

- Figure 1: Please explain the figure in the legend and in the text. What do arrows mean? Difference between dashed and solid line? What do numbers mean? How does the IVR work?

- All figures and tables: Please explain figures and tables in the respective legend.

Results:

- It is not clear which data from which source was used for which analysis. E.g., family planning methods: How did couples revealed to use contraceptives? Which question was asked?

- Table 1: What do the numbers in the religion cell mean? Was there no information available for the remaining percentage?

- Table 1: Not all participants owned a cell phone. How did those without a cell phone take part in the study?

- Table 2: How was the knowledge assessed exactly? Which questions were asked?

- Table 2: It looks like there is a difference between women and men, regarding the knowledge at baseline and the increase in knowledge from baseline to final assessment. Could be an interesting topic for the discussion. Did women used the IVR system more and accepted it better?

- Table 2: For men, there are some cells where the knowledge decreased. How is that possible? Do you have an explanation for that?

- Table 3: Please explain how the values are composed.

- Qualitative analysis: The presentation of the results of the qualitative analysis are not sufficient. Which themes and subthemes (according to Data analysis section) were identified? How many statements were allocated to which themes? Please give the reader more information here.

- Access to family planning methods: The number of clinical visits is only descriptively increasing. Can this also be statistically proven?

- Page 18 first statement: From a woman or a men? Contradictory information here.

- Acceptability and feasibility: Please indicate exact numbers or percentages here. Almost or nearly all is not precise enough.

- Access to contraceptive contents: What is a missed call? A call where no topic was selected?

- A figure where the distribution of selected topics or categories among the calls is depicted could be eventually helpful for the reader.

- Page 21: “Out of those 197 calls” To what are you referring here? Were there 197 calls about non hormonal contraceptives?

- Is there a relationship between selected topics during IVR calls and change in knowledge/use of contraceptives? If so, the change in knowledge/behaviour could be addressed more clearly to the intervention.

Discussion:

- The study does not directly show that the system leads to the change in outcome variables because there is no control group applied. Please adjust the wording.

- Why has the use of implants increased so much compared to other contraceptives?

This could be an interesting topic for the discussion.

- How do you explain the difference between most frequently used contraceptives (hormonal contraceptives, condoms) and most frequently selected IVR topics (natural contraceptives)?

--------------------

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Reviewer #1: Yes: Dr Garoma Kitesa Begna

Reviewer #2: No

Reviewer #3: No

--------------------

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Attachment

Submitted filename: Ondoilo_Manuscript 2march2022.docx

PLOS Digit Health. doi: 10.1371/journal.pdig.0000254.r003

Decision Letter 1

Yuan Lai, Gaurav Laroia

2 Feb 2023

PDIG-D-22-00061R1

"The phone number is telling us good things which we didn’t know before.” Use of Interactive Voice Response Calling for Improving knowledge and uptake of family planning methods among Maasai in Tanzania

PLOS Digital Health

Dear Dr. Ngowi,

Thank you for submitting your manuscript to PLOS Digital Health. After careful consideration, we feel that it has merit but does not fully meet PLOS Digital Health's publication criteria as it currently stands. Therefore, we invite you to submit a revised version of the manuscript that addresses the points raised during the review process.

==============================

EDITOR: Please insert comments here and delete this placeholder text when finished. Be sure to:

* Indicate which changes you require for acceptance versus which changes you recommend

* Address any conflicts between the reviews so that it's clear which advice the authors should follow

* Provide specific feedback from your evaluation of the manuscript

==============================

Please submit your revised manuscript within 30 days Mar 04 2023 11:59PM. If you will need more time than this to complete your revisions, please reply to this message or contact the journal office at digitalhealth@plos.org. When you're ready to submit your revision, log on to https://www.editorialmanager.com/pdig/ and select the 'Submissions Needing Revision' folder to locate your manuscript file.

Please include the following items when submitting your revised manuscript:

* A rebuttal letter that responds to each point raised by the editor and reviewer(s). You should upload this letter as a separate file labeled 'Response to Reviewers'.

* A marked-up copy of your manuscript that highlights changes made to the original version. You should upload this as a separate file labeled 'Revised Manuscript with Track Changes'.

* An unmarked version of your revised paper without tracked changes. You should upload this as a separate file labeled 'Manuscript'.

If you would like to make changes to your financial disclosure, please include your updated statement in your cover letter. Guidelines for resubmitting your figure files are available below the reviewer comments at the end of this letter.

We look forward to receiving your revised manuscript.

Kind regards,

Yuan Lai, Ph.D.

Academic Editor

PLOS Digital Health

Journal Requirements:

Please review your reference list to ensure that it is complete and correct. If you have cited papers that have been retracted, please include the rationale for doing so in the manuscript text, or remove these references and replace them with relevant current references. Any changes to the reference list should be mentioned in the rebuttal letter that accompanies your revised manuscript. If you need to cite a retracted article, indicate the article's retracted status in the References list and also include a citation and full reference for the retraction notice.

Additional Editor Comments (if provided):

[Note: HTML markup is below. Please do not edit.]

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1. If the authors have adequately addressed your comments raised in a previous round of review and you feel that this manuscript is now acceptable for publication, you may indicate that here to bypass the “Comments to the Author” section, enter your conflict of interest statement in the “Confidential to Editor” section, and submit your "Accept" recommendation.

Reviewer #1: All comments have been addressed

Reviewer #3: (No Response)

--------------------

2. Does this manuscript meet PLOS Digital Health’s publication criteria? Is the manuscript technically sound, and do the data support the conclusions? The manuscript must describe methodologically and ethically rigorous research with conclusions that are appropriately drawn based on the data presented.

Reviewer #1: Yes

Reviewer #3: Yes

--------------------

3. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #1: Yes

Reviewer #3: Yes

--------------------

4. Have the authors made all data underlying the findings in their manuscript fully available (please refer to the Data Availability Statement at the start of the manuscript PDF file)?

The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception. The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.

Reviewer #1: Yes

Reviewer #3: Yes

--------------------

5. Is the manuscript presented in an intelligible fashion and written in standard English?

PLOS Digital Health does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.

Reviewer #1: Yes

Reviewer #3: Yes

--------------------

6. Review Comments to the Author

Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)

Reviewer #1: they tried to incorporate the comments but still let they modify the English, other comments are just minor that could me modified and I just highlighted my concern in the document too. Thanks

Reviewer #3: Dear author,

considering the reviewers comments, your manuscript has improved substantially, congratulations on that. However, not all comments were implemented properly. There are still some minor issues.

General:

- Formatting: The formatting of the text is still faulty in many places. There are double spaces, misplaced commas and dots, unfinished phrases (e.g. Abstract), and citations outside the phrase in the manuscript. Please review the manuscript carefully.

Abstract:

- double use of "increased" in Results section

- last sentence in Results section incomplete

Methods:

- Second sentence grammatically wrong "This was serial design consisted of a baseline assessment ..."

- Please add the information that participants without a cellphone were provided with one to the manuscript.

Results:

- Page 15: The final quote on that page was already used on page 14, but with a different reference.

Discussion:

- Page 20 first sentence: that or which

Best wishes!

--------------------

7. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files.

Do you want your identity to be public for this peer review? If you choose “no”, your identity will remain anonymous but your review may still be made public.

For information about this choice, including consent withdrawal, please see our Privacy Policy.

Reviewer #1: Yes: Dr Garoma Kitesa Begna

Reviewer #3: No

--------------------

[NOTE: If reviewer comments were submitted as an attachment file, they will be attached to this email and accessible via the submission site. Please log into your account, locate the manuscript record, and check for the action link "View Attachments". If this link does not appear, there are no attachment files.]

While revising your submission, please upload your figure files to the Preflight Analysis and Conversion Engine (PACE) digital diagnostic tool, https://pacev2.apexcovantage.com/. PACE helps ensure that figures meet PLOS requirements. To use PACE, you must first register as a user. Registration is free. Then, login and navigate to the UPLOAD tab, where you will find detailed instructions on how to use the tool. If you encounter any issues or have any questions when using PACE, please email PLOS at figures@plos.org. Please note that Supporting Information files do not need this step.

PLOS Digit Health. doi: 10.1371/journal.pdig.0000254.r005

Decision Letter 2

Yuan Lai, Gaurav Laroia

11 Apr 2023

“The phone number tells us good things we didn’t know before.” Use of Interactive Voice Response Calling for Improving knowledge and uptake of family planning methods among Maasai in Tanzania

PDIG-D-22-00061R2

Dear Mr Ngowi,

We are pleased to inform you that your manuscript '“The phone number tells us good things we didn’t know before.” Use of Interactive Voice Response Calling for Improving knowledge and uptake of family planning methods among Maasai in Tanzania' has been provisionally accepted for publication in PLOS Digital Health.

Before your manuscript can be formally accepted you will need to complete some formatting changes, which you will receive in a follow-up email from a member of our team. 

Please note that your manuscript will not be scheduled for publication until you have made the required changes, so a swift response is appreciated.

IMPORTANT: The editorial review process is now complete. PLOS will only permit corrections to spelling, formatting or significant scientific errors from this point onwards. Requests for major changes, or any which affect the scientific understanding of your work, will cause delays to the publication date of your manuscript.

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Best regards,

Yuan Lai, Ph.D.

Academic Editor

PLOS Digital Health

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As reviewer 2 pointed out, some format and editing issues need to be fixed. Please address reviewer 2's comments before final proofreading and publication.

Reviewer Comments (if any, and for reference):

Reviewer's Responses to Questions

Comments to the Author

1. If the authors have adequately addressed your comments raised in a previous round of review and you feel that this manuscript is now acceptable for publication, you may indicate that here to bypass the “Comments to the Author” section, enter your conflict of interest statement in the “Confidential to Editor” section, and submit your "Accept" recommendation.

Reviewer #1: All comments have been addressed

Reviewer #3: (No Response)

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2. Does this manuscript meet PLOS Digital Health’s publication criteria? Is the manuscript technically sound, and do the data support the conclusions? The manuscript must describe methodologically and ethically rigorous research with conclusions that are appropriately drawn based on the data presented.

Reviewer #1: Yes

Reviewer #3: (No Response)

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3. Has the statistical analysis been performed appropriately and rigorously?

Reviewer #1: Yes

Reviewer #3: (No Response)

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4. Have the authors made all data underlying the findings in their manuscript fully available (please refer to the Data Availability Statement at the start of the manuscript PDF file)?

The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception. The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.

Reviewer #1: Yes

Reviewer #3: (No Response)

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5. Is the manuscript presented in an intelligible fashion and written in standard English?

PLOS Digital Health does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.

Reviewer #1: Yes

Reviewer #3: (No Response)

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6. Review Comments to the Author

Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)

Reviewer #1: I want to my appreciation to the team for their great effort....thanks

Reviewer #3: Still not addressed:

- Abstract: last sentence in Results section incomplete

- Page 15: The final quote on that page was already used on page 14, but with a different

reference.

- Please add the information that participants without a cellphone were provided with one

to the manuscript. (Still cannot find the information in the manuscript.

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Reviewer #1: Yes: Dr Garoma Kitesa Begna

Reviewer #3: No

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Associated Data

    This section collects any data citations, data availability statements, or supplementary materials included in this article.

    Supplementary Materials

    S1 Appendix. Survey on Investigating the knowledge about family planning.

    (PDF)

    Attachment

    Submitted filename: Ondoilo_Manuscript 2march2022.docx

    Attachment

    Submitted filename: Response letter Plos digital.docx

    Attachment

    Submitted filename: Responseto comment 10Feb.docx

    Data Availability Statement

    Data are publicly available consisting of the survey, medical extraction, as well as IVCR system, are located at https://www.ebi.ac.uk/biostudies/studies/S-BSST980#.


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