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. 2024 Apr 1;4(4):e0002123. doi: 10.1371/journal.pgph.0002123

Implementation and effectiveness outcomes of Community Health Advocacy Teams to improve long-lasting insecticide net distribution and use in six districts in Ghana: A one-group pre-post-test study

Franklin N Glozah 1, Philip Teg-Nefaah Tabong 1,*, Eva Bazant 2, Emmanuel Asampong 1, Ruby Hornuvo 1, Adanna Nwameme 1, Nana Yaw Peprah 3, Gloria M Chandi 4, Philip Baba Adongo 1, Phyllis Dako-Gyeke 1
Editor: Ruth Ashton5
PMCID: PMC10984411  PMID: 38557578

Abstract

Malaria remains a leading cause of illness and death especially among children and pregnant women in Ghana. Despite the efforts made by the National Malaria Elimination Programme (NMEP), including distribution of Long-Lasting Insecticide Nets (LLINs) to households through periodic Point Mass Distribution (PMD) campaigns and continuous channels (antenatal, schools and postnatal), there is a gap between access and use of LLINs in Ghana. An effective and functional community-based group that would seek to improve the effectiveness of LLIN distribution before, during, after PMD Campaigns and continuous distribution at the community level could help address this gap. This paper assesses the implementation outcomes and short-term effectiveness of the pilot implementation of co-created community health advocacy teams (CHAT) intervention in Ghanaian communities to plan and implement campaigns to increase LLIN use. The study employed a one-group pre-post study design and measured implementation outcomes (acceptability, appropriateness, and feasibility) and effectiveness outcomes (LLIN awareness, LLIN access, willingness to purchase LLIN, and LLIN use) among 800 community households. The CHAT intervention was implemented for four months across six districts in the Eastern and Volta regions of Ghana. The data were downloaded directly from REDCap and analyzed statistically (descriptive and McNemar test of association) using SPSS 22 software. After the implementation period, the majority of respondents in all six districts indicated that the CHAT intervention was acceptable (89.8%), appropriate (89.5%), and feasible (90%). Also, there was a significant association between baseline and end-line assessment on all four effectiveness outcome measures. Household members’ awareness of, access to, willingness to purchase, and use of LLINs increased significantly over the four-month period that the CHAT intervention was implemented. The study concludes that CHAT is an acceptable, appropriate, and feasible intervention for supporting the National Malaria Programme in LLIN PMD and for engaging in Social and Behaviour Change Communication activities through the continuous channels of distribution. Additionally, the CHAT demonstrates short-term effectiveness outcomes in terms of creating LLIN awareness, providing access to LLIN, and encouraging Ghanaian community members to be willing to purchase and use LLINs. Although the activities of CHAT members were largely voluntary, integration into the existing primary health care system will make it sustainable.

Background

Globally, there were an estimated 247 million cases of malaria and 619,000 malaria deaths in 2021, with the WHO African Region recording a relatively high malaria burden. 95% of malaria cases and 96% of malaria deaths among children under 5 years of age, were recorded accounting for 80% of malaria mortality in the in the WHO African Region [1]. Ghana is one of the 15 countries in Africa with the highest malaria burden, with 2.1% of malaria cases and 1.9% of malaria deaths. From 2017 to 2020, about 4.3% of West African malaria cases in were in Ghana [2]. Malaria remains a major cause of illness and death in Ghana, especially among children under five years of age and pregnant women, and accounts for 41% of suspected outpatient, 21% confirmed, and 18% of inpatient malaria cases in 2020.The disease continues to be the most expensive for the National Health Insurance Scheme (NHIS) to cover and has a huge impact on all aspects of human life [3].

The National Malaria Elimination Programme (NMEP) is responsible for reducing malaria morbidity and mortality in Ghana. Over the years, the programme has carried out several malaria prevention interventions such as the Point Mass Distribution (PMD) of Long-Lasting Insecticide-Treated Nets (LLINs) [3]. The distribution and use of LLINs are core interventions for preventing malaria infection in malaria-endemic countries, including Ghana. LLINs provide protection against mosquito bites, repel, and kill mosquitoes, thereby reducing the transmission of malaria parasites and decreasing malaria risk at the individual and community levels when high coverage is achieved [4]. The 2014–2020 Ghana Strategic Plan for Malaria Control focused on scaling up LLIN use and other malaria interventions including ownership and use of LLINs, indoor residual spraying (IRS), and intermittent preventive treatment during pregnancy using sulfadoxine and pyrimethamine (IPTp-SP)] to reduce the malaria morbidity and mortality burden by 75% by 2020 [4].

LLINs can be obtained mainly during PMD campaigns; however, as part of targeted continuous distribution programmes, LLINs are distributed through antenatal care (ANC), child welfare clinics (CWC), and primary schools. During their initial ANC visit, pregnant women are the focus of distribution in health facilities. The LLINs are given out free to children 18 months or older as part of child welfare visits, at the time of their second dose of the measles-rubella vaccine [4]. Children in Primary 2 and Primary 6 in public and private schools across the country receive free LLINs as part of school-based distributions in years when a PMD campaign does not take place [4].

Even though over the years there have been improvements in overall LLIN ownership, NMEP’s strategic goal of 80% utilisation among pregnant women and children under five is yet to be met. The 2019 Ghana Malaria Indicator Survey shows that 67% of Ghanaian households have LLINs (access), but only 43% of the Ghanaian household population slept under LLINs the night before the survey. This indicates that a relatively large number of people have not slept under the LLIN despite the distribution campaign. These distribution efforts have exposed a high proportion of Ghanaians to having at least one LLINs at the household; however, this has not translated to commensurate LLIN use. Among other reasons, heat from sleeping in the LLIN is one of the most cited barriers to regular LLIN use, especially during the dry season. Other reported barriers to LLIN use include skin irritation; poor ventilation in sleeping areas; and, in some cases, a lack of knowledge of the relationship between the LLIN use and malaria prevention [5,6].

The LLINs distributed through campaigns and continuous distribution channels are normally provided for free using the formula two household members to one net. However, with declining support to the country as it attained a middle-income status, there is the need to position users to begin to think about procuring their own LLINs. LLINs are socially desired and accepted in many communities, but programmes struggle to convince people to buy, maintain, and utilise them properly. Designing a sustainable and effective LLINs strategy is difficult because several social and cultural factors influence the adoption and use of LLINs in communities. For example, in several parts of Africa, including Ghana, malaria health-seeking behaviour among people does not indicate a connection between mosquito bites and malaria as these are attributed to other factors [7,8].

In addition to the above, some barriers to LLIN use including limited social and behaviour change communication (SBCC) activities, lack of continuous malaria education, knowledge gap on malaria prevention, inability to hang LLINs in many households due to housing type and sleeping places, as well as misuse and repurposing of LLINs have been identified and documented in numerous studies [9]. These suggest that more social, cultural, and behavioural research is needed to understand how local knowledge of transmission, diagnosis, treatment, and prevention influences the utilisation of LLINs interventions. In order to create community-based malaria control programmes that are sustainable and encourage behaviour change as well as the adoption of new concepts and technologies, it is helpful to understand local knowledge about malaria [7] and used of context specific strategies.

The Community Health Advocacy Team (CHAT) innovation in Ghana

Evaluations conducted in Ghana have consistently discovered a large disparity between household ownership of LLINs and the use of LLINs, with LLINs use always significantly lower than ownership of at least one LLINs. This has been interpreted as evidence of the inability to achieve appropriate LLINs use, or as a failure of social behaviour change communication (SBCC) to sufficiently improve LLIN use [68,10,11]. Considering this evidence, innovative social interventions that encourage behaviour change are required to meet the objectives of the LLIN distribution campaign [12]. Through community-based programmes, government, health organisations, and social actors, all relevant stakeholders can collaborate closely to solve public health problems in the population.

As a consequence, a Community Health Advocacy Team (CHAT) intervention was co-created through the participatory learning in action technique using participatory workshops (PWs) involving stakeholders (researchers, community members, district health management team and the NMEP) in six study districts in Ghana. This was an initiative by the study team from the University of Ghana School of Public Health in collaboration with the NMEP.

To co-create the CHAT intervention, findings from the initial phases of the project (i.e., desk review, focus group discussions (FGDs), key informant interviews (KIIs), and baseline surveys) were synthesized and grouped according to relevance and distilled which formed the basis for developing a PW guide. This guide was then used for the moderation of the PWs aimed at cocreating a LLIN campaign intervention involving various stakeholders. Findings from the PWs suggested the establishment of a CHAT can be instrumental in facilitating and improving the effectiveness of LLIN distribution campaigns within communities in Ghana [9]. The CHAT uses a person-centred approach to promote LLIN access and use by leveraging on Ghana’s Community-based Health Planning and Services (CHPS) programme (i.e., primary health care system), to ensure community involvement, ownership, and sustainability of the LLIN PMD campaigns [9].

A CHAT consists of nine members who are influential in their respective communities: namely, Community Health Officers, religious leaders, School Health Education Programme coordinators, assemblymen/women, community information officers, representatives from the security services, community-based organisations, and traditional authorities. The terms of reference of the CHAT are generally based on NMEP’s key elements of the campaign functions at the sub-district level: household registration, training, SBCC activity, logistics, distribution, and supervision. The CHAT meetings are convened quarterly, preferably by a CHO.

The CHAT members were trained on how to carry out malaria education and prevention activities, as well as the promotion of LLINs use within communities and primary health care levels during and after PMD campaigns. Specifically, the CHAT members are expected to provide community-level support for LLIN distribution channels through PMD campaigns; through continuous distribution of LLINs in schools, ANC and CWC; and develop context-based Social and Behaviour Change Communication (SBCC) strategies on malaria prevention and consistent use of LLINs. The CHAT sensitizes the community on the proper use and maintenance of LLINs, supports with the management of LLINs logistics during distribution exercises and accountability, and assists other community-based health campaigns [13]. CHAT use community-based strategies such as house-to-house, community durbars, use community information centres and school health platforms to promote the use of LLINs. In addition, CHAT members collaborate with district health management team and other civil society groups to provide voluntary campaigns on LLINs use. The teams officially started their activities in the community in November 2021.

This paper assesses the implementation outcomes and short-term effectiveness of the co-created CHAT intervention in six districts in Ghana. We hypothesise that if the CHATs are effective after a four-month pilot implementation, the CHAT will be highly acceptable, appropriate, and feasible, and there will be a significant increase in LLIN awareness, access, willingness to purchase, and use before and after the pilot implementation. Although both qualitative and quantitative methods were used at various stages of the study to contextualize and explore the barriers to, and enablers of Mass LLIN Distribution Campaigns, and to identify baseline parameters to be used for assessing the effectiveness of our co-created intervention, only the outcomes of the quantitative surveys are presented in this paper.

Methods and materials

Ethical approval

Ethical clearance was obtained from the Ghana Health Service Ethics Review Committee before the commencement of all data collection. All research assistants received specific training before data collection per the study’s training protocol. Participants involved in this study provided written informed consent before participating in the study. Participants were informed about the aim of the study, procedures, benefits of the study, as well as their rights as participants. The information and consent documents for participants were written in simple English. To enhance comprehension, research assistants were present during the informed consent process to explain any questions that the participants did not understand. Those consenting to participate in the study signed (or placed a thumbprint on) an informed consent form, before participating in the study. All participants were assured that the information they provided would be handled confidentially and research findings would be reported with complete anonymity.

Study design

We used a one-group pre-post study design and measured our outcomes (1) LLIN awareness [2], LLIN access [3], willingness to purchase LLIN [4], LLIN use [5], acceptability [6], appropriateness, and [7] feasibility among community members, before implementing the CHAT intervention, and again four months after implementation. We used the Reach, Effectiveness, Adoption, Implementation and Maintenance (RE-AIM) framework [14] as the basis for determining and assessing the implementation outcomes and short-term effectiveness of our study outcomes. Using the RE-AIM framework, we examined the Reach of the communication in terms of who are expected to benefit from the Campaigns and the percent of those are actually exposed to intervention. The Effectiveness of the Campaign was measured to determine the contribution of the Campaign to regular use of LLIN among the targeted population for the Campaign. We also measured the context (Adoption) in which the communication Campaigns apply and determined how the communication Campaigns were applied and the level of compliance with what was conceptualized (Implementation). Finally, we explored the sustainability of the Campaign strategies. Tools developed by the National Working Group on RE-AIM Planning and Evaluation Framework [14] and the acceptability framework created by Sekhon and colleagues [15] were adapted to collect quantitative data.

To assess effectiveness, we restricted ourselves to measuring short-term differential rates in the utilisation of the CHAT and its related activities.

Study areas

The study was conducted in six districts–three in the Eastern Region and three in the Volta Region of Ghana (Fig 1). These were communities in districts where the 2021 PMD campaigns of LLINs were ongoing. We ensured that baseline assessments were done in the selected communities before their involvement in NMEP’s key elements of the campaign (i.e., registration and distribution activities for the 2021 PMD). Also, the implementation of the CHAT was planned to run within NMEP structures as our aim was to transition the entire PMD campaign into CHPS. The districts that participated in the study were selected through purposive sampling because they recorded the highest malaria test positivity rate among patients attending health facilities (as indicated in their percentages) in 2020 in the two regions: Ho West (Tsito-90%), Ho (Takla Hokpeta-75%) and Agortime Ziope (Kpetoe-100%) in the Volta Region; and Birim South (Apoli-94%), Achiase (Achiase-94%) and Abuakwa North (Kukurantumi-93%) in the Eastern Region [16]. At the time of the study, continuous/routine LLINs distributions in schools and antenatal clinics were also ongoing in these communities.

Fig 1. Location of the six districts in the Eastern and Volta regions of Ghana.

Fig 1

Source: Created with ArcGIS (basemap shapefile: Ghana Statistical Service: https://data.humdata.org/dataset/cod-ab-gha).

Population, sample size and sampling procedure

The study population was made up of adult men and women from communities within the six districts in the two regions in southern Ghana. We used data from the Ghana Statistical Service (GSS) to initially list all eligible households in the selected communities. A systematic random sampling technique was then used to select the needed number of households for the study. Each community in the targeted region and district was allocated a sample size proportional to its population size. Using Cochran’s Sample Size Formula with an α-level of 5%, a margin of error associated with the estimates to be 5%, and a 50% anticipated increase in use of Mass LLIN distribution between baseline and endline, the estimated sample size was 800 for both baseline and end-line surveys.

Data collection tools and procedure

A structured questionnaire was developed for both the baseline and end-line surveys to collect information on the socio-demographic characteristics of households, socioeconomic status of the households, knowledge and perceptions about co-created intervention, use of LLINs, care of LLINs, the prevalence of malaria among children under five six weeks before the survey, etc. The survey questionnaire was developed in Research and Electronic Data Capture (REDCap) for onsite electronic data collection. The structured questionnaires were translated into three key local languages (Twi, Ga, and Ewe) and preloaded on Android tablet computers. All data were collected using face-to-face interviews with trained research assistants. Responses were uploaded instantly or shortly afterwards into a cloud-based data management system, which was regulated by the project team at the University of Ghana School of Public Health. In the baseline survey, participants were recruited from 21st August to 5th September 2021. During the endline, participants were recruited from 24th March-7th April 2022.

Measures

Implementation outcomes

Measures of acceptability, appropriateness, and feasibility were used to assess implementation outcomes of our intervention implementation. Acceptability is the perception among implementation stakeholders that a given treatment, service, practice, or innovation is agreeable, palatable, or satisfactory; appropriateness is the perceived fit, relevance, or compatibility of the innovation or evidence-based practice for a given practice setting, provider, or consumer, and/or perceived fit of the innovation to address a particular issue or problem; while feasibility is defined as the extent to which a new treatment or innovation can be successfully used or carried out within a given agency or setting [17]. These measures have four items each on a five-point Likert scale ranging from never (0) to always (4). In a validation study, the Cronbach’s alpha for the acceptability, appropriateness, and feasibility measures were 0.85, 0.91 and 0.89 respectively [17].

Short-term effectiveness outcomes

Awareness, access to LLIN, willingness to purchase LLIN, and LLIN use were utilised to assess the short-term effectiveness of the implementation of our intervention. These measures were adapted from the 2019 Ghana Malaria Indicator Survey Household Survey [4]. Awareness was assessed with the question “Have you heard about mosquito/bed net?”; access was assessed by asking “Does your household have a mosquito/bed net?”; willingness to purchase was assessed by asking “Are you willing to buy mosquito/bed nets for your household members?”; and LLIN use was assessed with the question “Did you or any of your household members sleep under a mosquito/bed net last night?” All four questions had dichotomized response options, Yes or No.

In addition to the implementation outcome measures and short-term effectiveness measures, time (i.e., baseline and end-line) was used as the main predictor of the effectiveness outcomes.

Statistical analysis

Data were downloaded directly from REDCap into SPSS 22. Data editing and formatting were done to ensure the correctness of the data. Data were also explored for normality using skewness and kurtosis prior to analysis. To estimate the level of acceptability, appropriateness, and feasibility of the intervention, we first created summated scores of these measures and then categorised them into low and high. Only completed data out of the 800 were used to compute the summated scores and for further analysis. Descriptive statistics were then performed to estimate the frequencies of the implementation outcome variables at end-line only. Also, the McNemar test for paired proportions was performed to determine the association between baseline and end-line measures of all short-term effectiveness outcomes i.e., LLIN awareness, access, willingness to purchase and use. A p-value <0.05 was considered statistically significant.

Results

Socio-demographic characteristics of participants

At both baseline and end-line, females were 70% of participants with a near equal number of males and females in all six districts. There were some few differences between the baseline and endline figures observed (i.e., Birim South and Achiase) and this was due to the unavailability of some participants (n = 2) who participated in the baseline hence any other available member of the same household who met the selection criteria were involved. (Table 1)

Table 1. Socio-demographic characteristics of participants.

District Sex
Baseline (N = 800) Endline (N = 800)
Male Female Total Male Female Total
Ho West (Tsito)1 40 95 135 40 95 135
Agotime Ziope (Kpetoe)1 28 107 135 28 107 135
Ho (Hokpeta)1 43 87 130 43 87 130
Birim South (Apoli)2 58 70 128 57 71 128
Achiase (Achiase)2 36 102 138 37 101 138
Abuakwa North (Kukurantumi)2 36 98 134 36 98 134
Total 241 559 800 241 559 800

1Volta Region

2Eastern Region.

Assessment of implementation outcomes

Nearly all (90%) of community members thought that the intervention was acceptable, appropriate, and feasible after its implementation (Table 2).

Table 2. Acceptability, appropriateness, and feasibility of the Community Health Advocacy Team in six districts.


Outcome measures
Level
Lower (N (%)) Higher (N (%)) Total (N (%))
Acceptability 36 (10.2) 317 (89.8) 353 (100)
Appropriateness 37 (10.5) 316 (89.5) 353 (100)
Feasibility 35 (10) 316 (90) 351 (100)

Also, when disaggregated by district, the majority of community members in all six districts mentioned that the CHAT intervention was acceptable, appropriate and feasible (Table 3).

Table 3. Acceptability, appropriateness, and feasibility of the Community Health Advocacy Team by district.

District Acceptability Appropriateness Feasibility
Lower Higher Total Lower Higher Total Lower Higher Total
Ho West (Tsito) 15 16 31 15 16 31 15 16 31
Agotime Ziope (Kpetoe) 14 33 47 15 32 47 14 33 47
Ho (Hokpeta) 6 51 57 6 51 57 5 51 56
Birim South (Apoli) 1 101 102 1 101 102 1 102 103
Achiase (Achiase) 0 87 87 0 87 87 0 86 86
Abuakwa North (Kukurantumi) 0 28 28 0 28 28 0 28 28
Total 36 317 353 37 316 353 35 316 351

Assessment of short-term effectiveness outcomes

There was a statistically significant association between baseline and end-line assessment on all four effectiveness outcome measures (Table 4). Household members’ awareness of LLINs, access to LLINs, willingness to purchase LLINs, and use of LLINs increased significantly over the four-month period that the CHAT intervention was implemented in the six districts. Households in the six districts were more likely to engage with LLIN campaign activities after the implementation of the CHAT intervention.

Table 4. Cross tabulations showing effectiveness outcomes from baseline to end-line.

Time
Responses Baseline Endline Total Chi-squared
Awareness of LLINs
No 0 45 45
19.45***
Yes 11 744 755
Total 11 789 800
Access to LLINs
No 28 229 257
124.02***
Yes 44 499 543
Total 72 728 800
Willingness to Purchase LLINs
No 84 263 347
47.55***
Yes 126 327 453
Total 210 590 800
LLIN Use
No 106 313 419
120.89***
Yes 91 290 381
Total 197 603 800

***p<0.001.

The highest increase was in access, followed by use, willingness to purchase, and then awareness.

Discussion

This paper assesses the implementation outcomes and short-term effectiveness of the co-created CHAT intervention for awareness, access, willingness to purchase, and use of LLINs across six districts in Ghana. The current study contributes to our understanding of how CHATs can be used to promote LLINs before, during and after campaigns in Ghana.

The study findings show that the CHAT intervention was highly accepted by the community members in all six study districts. This implies that the community members view the CHAT intervention as satisfactory in promoting access to and use of LLIN. Building trust among various stakeholders contributes to the acceptability of implementation research [18]. The engagement of stakeholders and community members throughout all phases of this study have contributed to trust building. Hence, the high acceptability observed here can be attributed to the approach used in this study, such as the use of SBCC, community mobilisation, and engagement of community stakeholders and community members throughout the intervention development and implementation processes of this study. As evident in other studies employing Social and Behaviour Change Communication (SBCC) strategies, the involvement of community stakeholders, leaders and community volunteers helps build trust among community members and fosters community buy-in of malaria intervention which is crucial to the acceptability and sustainability of interventions [19].

Similarly, the study showed that the CHAT intervention was appropriate and feasible. While appropriateness as an implementation outcome refers to the perceived fit, relevance, or compatibility of the innovation or evidence-based practice for a given practice setting, provider, or consumer; and/or perceived fit of the innovation to address a particular issue or problem, feasibility is the extent to which a new treatment, or an innovation, can be successfully used or carried out within a given agency or setting [20]. Community members from all six study communities perceived the CHAT intervention to be highly appropriate and feasible. This suggests that the CHAT intervention is a good fit with the value system of the community members and is regarded as practical and adequate for further implementation. Studies have shown that high appropriateness and feasibility are necessary requirements for successful intervention implementation and the achievement of intervention outcomes [1921].

Furthermore, there was a statistically significant association between baseline and end-line assessment on all four effectiveness outcome measures. The study showed a high increment in awareness level, access, willingness to purchase and use of LLINs. The association between community involvement and malaria awareness is consistent with other malaria studies conducted in Rwanda and Malawi which found that community involvement in malaria control intervention increased awareness of malaria and the intervention being implemented [22,23]. A high awareness level among community members could also help address community misconceptions about LLIN use as becoming knowledgeable about malaria prevention strategies will consequently increase LLIN use among community members [6]. Though there are few studies on willingness to pay for malaria control interventions in Sub-Saharan Africa [24,25], existing studies reveal that, when considered in the context of community engagement and the requirement for local support for financial sustainability of malaria control, the determination of consumer preferences and demand is significant in community-based health interventions [26,27].

Access to and use of LLINs has been vital in malaria prevention in Ghana. Previous studies have shown that there is a gap between LLIN access and LLIN use [6]. Evaluations have consistently discovered a large disparity between household ownership of LLIN and the use of LLIN, with LLIN use always significantly lower than ownership of at least one LLIN. This has been interpreted as evidence of the inability to achieve appropriate LLINs use or as a failure of behaviour change communication to sufficiently improve LLIN use [6,10,11]. By employing innovative social interventions that encourage behaviour change, and co-creating the CHAT interventions with community stakeholders, this study has recorded high access to LLIN and appropriate LLIN use in all six study communities. As evident in other community-based studies [22,23,25], engaging community members and key stakeholders at the grassroot level has shown to have contributed to a successful implementation of the CHAT intervention.

Limitations

Although this study provided the implementation and effectiveness outcomes of CHAT intervention to improve LLIN distribution campaigns and continuous channels in six districts in Ghana with significant outcomes, the duration of the pilot implementation (i.e., 4 months) is relatively short to unravel all implementation and effectiveness outcomes. The distribution of the LLINS coincided with the activities of CHAT, as such, the observed increase in the implementation outcomes could be partly due to PMD. Also, the study was conducted in six communities within 2 regions in Ghana, so caution needs to be exercised when generalizing the findings to the whole of Ghana or other LMICs. Furthermore, due to the seasonality of malaria transmission in Ghana (i.e., during rainy seasons: April to June and September to November), the season within which the CHAT was implemented could have influenced the results. There is the need for long-term implementation of the CHAT to effectively observe the seasonal variations of implementation outcomes and effectiveness outcomes of CHAT to promote LLIN use for malaria control. This could be done by comparing implementation outcomes between communities with CHAT and those without. This would allow for difference in difference analysis.

Conclusion

The CHAT intervention is effective in promoting LLIN use among community members. The use of SBCC, community mobilisation and stakeholder engagement has contributed to community involvement and buy-in of the CHAT intervention, thereby increasing its acceptability and feasibility in the study communities. The CHAT intervention is perceived as appropriate by community members and considered to be practical and adequate for further implementation. A higher level of awareness of LLINs recorded at the end-line will help contribute to the reduction of misconceptions regarding LLINs and malaria control and prevention, thereby increasing access to and use of LLINs. The high level of willingness to purchase LLINs is also important for local support of the financial sustainability of malaria control interventions. Finally, the CHAT intervention’ effectiveness in increasing access to and use of LLINs could contribute to malaria reduction and elimination in Ghana. The co-created CHAT in Ghana is an acceptable, appropriate, and feasible intervention for supporting the NMEP in the periodic Point Mass Distribution campaigns of LLINs, and for engaging in SBCC activities to support the continuous channels of distribution. CHAT can be used to transition the PMD and continuous distribution of LLINs into the Primary Health Care system in communities in Ghana.

Supporting information

S1 Checklist. Inclusivity-in-global-research-questionnaire.

(DOCX)

pgph.0002123.s001.docx (65.3KB, docx)

Acknowledgments

We would like to thank all stakeholders: members and staff from the Ghana Health Service (GHS) and the National Malaria Control Programme (NMCP), the Volta and Eastern Regional Directors of Health Services, the District Health Directors of Ho West; Ho; Agortime Ziope; Birim South; Achiase and Abuakwa North Districts, CHAT members, as well as community members who committed time to share experiences and provide data for this study. We are also grateful to the field staff for their meticulous work during data collection. Finally, we thank the HCE team (Allison Snyder, Patricia Richmond and Kristin Saarlas) for their constructive review and useful comments that strengthened the paper.

Data Availability

All data and related metadata underlying the findings reported can be obtained from the Ghana Health Service Ethics Review Committee on ethics.research@ghsmail.org.

Funding Statement

This work was supported in whole by the Bill & Melinda Gates Foundation (Grant Number INV-01076 to the Task Force for Global Health’s Health Campaign Effectiveness (HCE) Program) and received by PDG, FNG, PT-NT, EA, AN, GMC, and PBA. 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 Glob Public Health. doi: 10.1371/journal.pgph.0002123.r001

Decision Letter 0

Ruth Ashton

28 Nov 2023

PGPH-D-23-01102

Implementation and effectiveness outcomes of Community Health Advocacy Teams to improve long-lasting insecticide net distribution and use in six districts in Ghana: a one-group pre-post-test study.

PLOS Global Public Health

Dear Dr. Tabong,

Thank you for submitting your manuscript to PLOS Global Public Health. After careful consideration, we feel that it has merit but does not fully meet PLOS Global Public 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 by Jan 12 2024 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 globalpubhealth@plos.org. When you're ready to submit your revision, log on to https://www.editorialmanager.com/pgph/ 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'.

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,

Ruth Ashton, Ph.D.

Academic Editor

PLOS Global Public Health

Journal Requirements:

1. We noticed you have some minor occurrence of overlapping text with the following previous publication(s), which needs to be addressed:

- https://www.frontiersin.org/articles/10.3389/frhs.2022.1102328/full

In your revision ensure you cite all your sources (including your own works), and quote or rephrase any duplicated text outside the methods section. Further consideration is dependent on these concerns being addressed."""

2. Please include a complete copy of PLOS’ questionnaire on inclusivity in global research in your revised manuscript. Our policy for research in this area aims to improve transparency in the reporting of research performed outside of researchers’ own country or community. The policy applies to researchers who have travelled to a different country to conduct research, research with Indigenous populations or their lands, and research on cultural artefacts. The questionnaire can also be requested at the journal’s discretion for any other submissions, even if these conditions are not met.  Please find more information on the policy and a link to download a blank copy of the questionnaire here: https://journals.plos.org/globalpublichealth/s/best-practices-in-research-reporting. Please upload a completed version of your questionnaire as Supporting Information when you resubmit your manuscript.

Additional Editor Comments (if provided):

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

Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

1. Does this manuscript meet PLOS Global Public 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: Partly

Reviewer #2: Partly

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

Reviewer #1: I don't know

Reviewer #2: No

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3. 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 #2: Yes

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

PLOS Global Public 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 #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: I read with interest this study entitled “Implementation and effectiveness outcomes of Community Health Advocacy Teams to improve long-lasting insecticide net distribution and use in six districts in Ghana: a one-group pre-post-test study”. Acknowledging the relevance of community-oriented approaches, the paper addresses a novel intervention aimed at promoting the utilization of Long-Lasting Insecticide Nets (LLIN) in selected districts in Ghana. This initiative involves the implementation of Community Health Advocacy Teams (CHAT), a strategy rooted in community engagement techniques. Beyond presenting this innovative approach within the context of LLIN use, the paper primarily focuses on sharing the results of a pre-post implementation study, that provides data on the positive outcomes of the CHAT intervention (specifically, its short-term effectiveness and some implementation-oriented outcomes such as acceptability, appropriateness and feasibility). The study's positive results suggest the potential for integrating the CHAT intervention into the Primary Healthcare system as a strategic program to enhance LLIN access and utilization.

While the specific methods employed by the authors fall outside my area of expertise, I have approached the paper with attention to the broader context, as I’m familiar with the research domain that the work explores. Hence, my feedback will be centred on study’s scientific relevance, conceptual coherence, and the clarity of its narrative.

Overall, the manuscript tackles an important aspect defining effective public health interventions, namely, community involvement in healthcare service delivery (specially regarding malaria prevention strategies). However, I noticed a few areas of the study assessing the CHAT short-term effectiveness and implementation outcomes that might require significant attention and revision before publication.

General comments:

In general, the paper addresses a topic of significant relevance, and the overall writing quality is commendable. However, upon careful review, it seems that certain sections and paragraphs might require revision to enhance readability. There are specific ideas that could benefit from improved linkage, ensuring greater clarity and fluency in the narrative. For instance, there are certain sentences in the 1st paragraph of the background section appears repetitive in their content.

The background should contextualise the study presented and should serve to prepare the reader understand the research gaps the paper aims to address. In this vein, the authors state that “more social, cultural, and behavioural research is needed to understand how local knowledge of transmission, diagnosis, treatment, and prevention influences the utilisation of ITN interventions” and “in order to create community-based malaria control programmes that are sustainable and encourage behaviour change as well as the adoption of new concepts and technologies, it is helpful to understand local knowledge”. While this argument is legitimate and supported by previous projects and accumulated evidence (and with which I agree), the study does not seem to cover these identified gaps, creating confusion for the reader. The argument is not revisited in the discussion, likely because the collected data, due to the study's objectives and design, do not allow for it. The authors might create certain expectations that are not fulfilled later on. I suggest rephrasing this important idea to integrate it better into the background section's narrative flow. For example, exploring how the CHAT intervention leverages local knowledge would make sense.

Another aspect that might require revision is the presentation of the CHAT intervention itself. Certain information appears to be missing (for instance, its origin: Who initiated this initiative? Is it part of a broader project? Is it affiliated with NMEP?). Reference number 13, cited in this subsection, pertains to a qualitative study that, presumably, is conducted by the same research team. Fortunately, the intervention is described more comprehensively in that paper. I strongly recommend that the authors revise this example. Additionally, providing more details on the co-creation process of the CHAT intervention would be highly appreciated.

One of the key concerns I have pertains to the clarity of the chosen conceptual framework guiding the assessment of the implementation outcomes. The authors state that they utilized the RE-AIM model, which apparently informed the selection and evaluation of effectiveness and implementation outcomes (i.e., acceptability, appropriateness, feasibility). However, given that the RE-AIM model comprises five dimensions pertinent to public health program planning and evaluation, none of which specifically address the selected implementation outcomes of this study (at least, not using the same terms), it would be helpful to provide details on how the model was employed and how it guided the assessment of short-term effectiveness and implementation outcomes. Specifically, clarifying the relationship between this conceptual model and the ultimately chosen outcomes is essential. A critical reflection, discussing the advantages and limitations of using the RE-AIM framework to assess implementation outcomes, would also be beneficial.

There are additional concerns regarding the methodology. Firstly, the authors state that this study follows a one-group pre-post design. I assume this means the same group of participants was involved in both phases of the study; however, the figures presented in Table 1 raise some doubts in this regard. I would appreciate clarification from the authors on this matter. Secondly, unlike the short-term effectiveness, there are no examples of the questions addressing acceptability, appropriateness, and feasibility. Given the complexity of defining and measuring these constructs, it would be valuable for the authors to provide some specific details. This will also allow to fully understand the results presented in the various tables.

Finally, in the discussion section, the authors address the crucial topic of trust-building, a key aspect often emphasized when evaluating the acceptability of a public health intervention at the community level. However, the connection between the collected data and the topic of trust is not sufficiently clear. I recommend that the authors elaborate more on this argument to enhance the understanding of how trust is implicated in their findings.

Specific comments:

Background:

• Line 71: Is the reference 1 cited correctly referred in the bibliography section? In case the authors wanted to cite the World Malaria Report 2022, the reference should be revised and corrected accordingly.

• Line 147-148: The acronym for the National Malaria Elimination Programme (NMEP) has already been used earlier in the text. There’s no need to use the long name again. I recommend the authors revise this throughout the text since there are other instances.

Methods

• Line 239: The 1st paragraph introducing the subsection on data collection appears to be confusing at this point in the text. I suggest moving it up to the introduction section, where the objectives of the study are being presented. This placement would provide better context and clarity for the readers.

Discussion:

• Lines 353-356: I’m not sure if the results provided helps support this statement. Can you elaborate more on this?

• Lines 394: The exact same sentence has been used earlier in the text. While I understand that the idea is being reintroduced, I recommend rephrasing it to create a more favorable impression on the reader.

I hope that above comments would help the authors to improve the manuscript. I am so looking forward to read the article once published.

Kind Regards.

Reviewer #2: The submitted manuscript describes implementation of a community health advocacy team (CHAT) and its impact on LLIN knowledge, attitudes, and practices in six districts of Ghana during a mass distribution campaign. Overall, the topic is intriguing, especially as it targets a real gap in the literature - namely how do we build consumer demand for LLINs, especially if and when support for public (i.e., free) distributions fades. Unfortunately, the study design suffers from significant methodological issues that call into question the validity of the results. Foremost among these is the concurrent PMD campaign. Because there is no control group (e.g., PMD only vs PMD+CHAT), one cannot disentangle any changes from the pre- to post-intervention period. For example, were participants more aware of LLINs and more likely to be using them because the PMD was ongoing and generally raised awareness or because of the specific effect of the CHAT intervention? For this reason, I do not think the results and interpretation - especially those relating to effectiveness - are valid. Additional comments below:

MAJOR

- The specifics of the CHAT intervention are not presented. Put simply, what did they actually do during the study period? How many meetings were there? How many household visits? There is no description of the activities conducted.

- There are standard WHO definitions of LLIN coverage measures including ownership, access, target coverage (1 LLIN per 2 HH members) and use, that are not referenced here and would have made for a more robust analysis. For example, we people not sleeping under LLINs because they did not have any LLINs, or they did not have enough LLINs for everyone in the household, or they had enough, but chose not to? Each is very different.

- The power calculation is not clearly described. What does a "50% anticipated use of mass LLIN distribution" refer to? A difference between pre- and post-surveys?

- Willingness to pay analysis is a discrete field of economics and requires much more than just a binary yes/no response. The results presented here don't truly capture that complexity and likely suffer from a social desirability bias.

MINOR

- Current accepted term is long-lasting insecticidal nets (LLINs), not insecticide treated nets

- Risk for severe disease (Line 77) is not just due to "lowered immunity", which is oversimplification

- Authors go back and forth between LLIN and ITN

- What does the proportion in each district mean? For example, Line 218. Is 90% and 75% the PfPR? If so that is an astounding level of transmission?

- Proportions should be presented in all tables

- Increasement (Line 332) should be increase

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Reviewer #1: No

Reviewer #2: No

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[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 Glob Public Health. doi: 10.1371/journal.pgph.0002123.r003

Decision Letter 1

Ruth Ashton

1 Feb 2024

PGPH-D-23-01102R1

Implementation and effectiveness outcomes of Community Health Advocacy Teams to improve long-lasting insecticide net distribution and use in six districts in Ghana: a one-group pre-post-test study.

PLOS Global Public Health

Dear Dr. Tabong,

Thank you for submitting your manuscript to PLOS Global Public Health. After careful consideration, we feel that it has merit but does not fully meet PLOS Global Public 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 by Mar 02 2024 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 globalpubhealth@plos.org. When you're ready to submit your revision, log on to https://www.editorialmanager.com/pgph/ 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'.

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,

Ruth Ashton, Ph.D.

Academic Editor

PLOS Global Public Health

Journal Requirements:

1. 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.

2. We have noticed that you have uploaded Supporting Information files, but you have not included a list of legends. Please add a full list of legends for your Supporting Information files after the references list.

Additional Editor Comments (if provided):

Thank you for your revised version of the manuscript. I have a couple of final suggestions that could further strengthen your paper:

1. You mention several times the gap between LLIN access and LLIN use, suggesting that this is primarily a behavioral challenge. However, the indicator you have used to define access is a household with at least one LLIN, but where the household has more than 2 members this may not be "sufficient" nets for everyone to be able to sleep under a net. I suggest that this difference between having access to any net in a household and having sufficient nets is discussed at some point. You may also consider including the indicator of whether a household has at least one LLIN for every two members as an indicator of sufficient nets.

2. In the description of the study area you refer to the selected district has having highest prevalence, with a reference to the Ghana HMIS. However, routine HMIS data does not usually report prevalence since it is not a cross-sectional survey. Either this reference should be corrected to the MIS, or perhaps the actual indicator from HMIS used for selection of districts with incidence, or maybe test positivity rate among patients attending health facilities.

3. I would like to recommend including in the discussion a few sentences exploring whether the observed changes in your effectiveness outcomes are due entirely to the CHAT process, or partly a result of the point mass distribution occurring together with the CHAT. An alternative to this pre-post study design could have been to also conduct surveys in areas where PMD is taking place but without the CHAT component, allowing you to perform a difference in differences analysis and strengthen the plausibility that changes in your outcome indicators are attributable to the CHAT intervention.

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Reviewers' comments:

[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 Glob Public Health. doi: 10.1371/journal.pgph.0002123.r005

Decision Letter 2

Ruth Ashton

4 Mar 2024

Implementation and effectiveness outcomes of Community Health Advocacy Teams to improve long-lasting insecticide net distribution and use in six districts in Ghana: a one-group pre-post-test study.

PGPH-D-23-01102R2

Dear Dr. Tabong,

We are pleased to inform you that your manuscript 'Implementation and effectiveness outcomes of Community Health Advocacy Teams to improve long-lasting insecticide net distribution and use in six districts in Ghana: a one-group pre-post-test study.' has been provisionally accepted for publication in PLOS Global Public 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. A member of our team will be in touch with a set of requests.

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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Thank you again for supporting Open Access publishing; we are looking forward to publishing your work in PLOS Global Public Health.

Best regards,

Ruth Ashton, Ph.D.

Academic Editor

PLOS Global Public Health

***********************************************************

Reviewer Comments (if any, and for reference):

Associated Data

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

    Supplementary Materials

    S1 Checklist. Inclusivity-in-global-research-questionnaire.

    (DOCX)

    pgph.0002123.s001.docx (65.3KB, docx)
    Attachment

    Submitted filename: Response to Reviewers 30.12.23.docx

    pgph.0002123.s002.docx (33.1KB, docx)
    Attachment

    Submitted filename: Response to Reviewers 27.2.24.docx

    pgph.0002123.s003.docx (25.3KB, docx)

    Data Availability Statement

    All data and related metadata underlying the findings reported can be obtained from the Ghana Health Service Ethics Review Committee on ethics.research@ghsmail.org.


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