Skip to main content
PLOS One logoLink to PLOS One
. 2021 Jul 15;16(7):e0254818. doi: 10.1371/journal.pone.0254818

Protocol for a scoping review of research on abortion in sub-Saharan Africa

Kenneth Juma 1, Ramatou Ouedraogo 1, Meggie Mwoka 1, Anthony Idowu Ajayi 1, Emmy Igonya 1, Emmanuel Oloche Otukpa 1,*, Boniface Ayanbekongshie Ushie 1
Editor: Ali Rostami2
PMCID: PMC8282029  PMID: 34264992

Abstract

Introduction

Unsafe abortion is a leading cause of maternal mortality, and access to safe abortion services remains a public health priority in sub-Saharan Africa (SSA). A considerable amount of abortion research exists in the region; however, the spread of existing evidence is uneven such that some countries have an acute shortage of data with others over-researched. The imbalance reflects the complexities in prioritization among researchers, academics, and funders, and undeniably impedes effective policy and advocacy efforts. This scoping review aims to identify and map the landscape of abortion research in SSA, summarize existing knowledge, and pinpoint significant gaps, both substantive and geographic, requiring further investigation. This review will provide direction for future research, investments, and offer guidance for policy and programming on safe abortion.

Materials and methods

We utilize the Joanna Briggs Institute’s methodology for conducting scoping reviews. We will perform the search for articles in 8 electronic databases (i.e., PubMed, AJOL, Science Direct, SCOPUS, HINARI, Web of Knowledge, CINAHL, and WHO Regional Databases). We will include studies written in English or French language, produced or published between January 1, 2011, and July 31, 2021, and pertain directly to the subject of abortion in SSA. Using a tailored extraction frame, we will extract relevant information from publications that meet the inclusion criteria. Data will be analyzed using descriptive statistics and thematic analysis in response to key review questions.

Ethics and dissemination

Formal ethical approval is not required, as no primary data will be collected. The findings of this study will be disseminated through peer-reviewed publications and conference presentations.

Introduction

Abortion is common in sub-Saharan Africa (SSA) [1, 2], and because of limited access to safe options, the majority of women and girls in need of pregnancy termination use unqualified and clandestine providers, leading to adverse outcomes [3]. Unsafe abortion and the resulting complications contribute significantly to maternal morbidity and mortality in the region [4]. Region-wide studies have established an increasing incidence of induced and unsafe abortions [5, 6]. Annually, from 2010–2014, about 15% of all pregnancies in Africa ended in abortion [7], of which approximately 8.2 million induced abortions occurred, representing a nearly 100% increase from 1990 and 1994 [1]. Besides demographic changes—specifically, an increase in the number of women of reproductive age [7]—, other reasons for the rise in induced abortions include the growing unmet need for contraception and improvements in technologies and procedures for terminating pregnancies [5]. Evidence from some low and middle-income countries (LMICs) points to the use of abortion as a substitute for contraception [8, 9].

Notably, about 75% of all abortions carried out in Africa are unsafe (i.e., pregnancy termination conducted by providers lacking the necessary skills or in an environment lacking the minimal medical standards or both) [10]. The risk of maternal death from unsafe abortion (one in every 150 procedures) is the highest in the world [11, 12]. The latest estimates show that over 70,000 women die annually from unsafe abortion (the majority being in Africa (38,000) and South Asia (24,000) [13]. Approximately 6.9 million women in developing regions suffer unsafe abortion-related complications and morbidities that require treatment, some with extended hospital stays, and intensive care involving highly skilled, yet scarce, health providers and enormous financial costs [6, 14].

Arguably, more than 98% of women in SSA live in legally restrictive abortion contexts that constrain access to safe abortion, with exceptions only in cases of rape or incest or to save a woman’s life [1517]. Criminalization has remained the primary tool for regulating abortion in most SSA countries, despite its limited effectiveness in ending or reducing abortions [18, 19]. Rather than limiting abortion rates, criminalization leads to a rise in unsafe abortions, related complications, and increase maternal morbidity and mortality [11, 20]. Global development frameworks long recognized these challenges and proposed bold targets such as the 1994 International Conference on Population and Development (ICPD), where states committed to ensuring access to quality post-abortion care services, despite existing anti-abortion laws. The sustainable development goals (SDGs) targets a global average maternal mortality ratio of less than 70 maternal deaths per 100 000 live births by 2030 [21]. Every country has the mandate to reduce its national maternal mortality ratio from baseline by two-thirds in that timeframe. Within this context, and in light of the potential benefits to women’s health and well-being of reforming abortion laws and policies [11], African countries have forged collective commitments to improve access to safe abortion services, including post-abortion care services. Such commitments encompassed continental frameworks such as the Protocol to the African Charter on Human and Peoples’ Rights on the rights of women in Africa (commonly known as the Maputo Protocol) and the Addis Ababa Declaration on Population and Development in Africa beyond 2014. Profound gaps remain, however, in the domestication and implementation of such progressive instruments at sub-regional or national levels.

Strong arguments exist in support of marshaling policy-relevant evidence to help address the barriers that presently impede the realization of the continental commitments on improved access to safe and legal abortion. An extensive range of studies has addressed critical questions concerning abortion in SSA, among others, on its magnitude, causes, and patterns across particular settings, or levels of access to and utilization, and the quality of abortion and post-abortion care services. However, the kinds of evidence–in substantive, geographic, or methodological terms–that are most relevant to promoting policy progress on abortion across SSA’s sub-regions and countries may not yet exist. Where such evidence is available, there is the need to interrogate and synthesize it for application. A comprehensive scoping review of the literature is needed to identify and provide directions for addressing such gaps. We aim to conduct such a scoping study to map the landscape of extant research on abortion in SSA, clarify key concepts, summarize existing knowledge and pinpoint gaps, both substantive and geographic, requiring further investigation. Even though there is a protocol published by Coast et al., 2019 focusing on the economics of abortion [22], our proposed study is unique in that it has a broader focus on abortion research targeting SSA. This study will synthesize the existing evidence to facilitate debates and advocacy at various levels in SSA and identify gaps for further inquiry.

Review questions

  1. How has abortion research (e.g., trends in volume, themes, study designs, and African-led studies) evolved in sub-Saharan Africa over the past decade?

  2. What is the geographical landscape of evidence on abortion incidence, the economic burden of unsafe abortion, and the cost and consequences of unsafe abortion to women and girls in sub-Saharan Africa, and what are the key findings?

Materials and methods

We will apply the Joanna Briggs Institute’s approach for conducting a scoping review [23]. The methodology involves a systematic approach to searching, screening, and reporting that encompasses the following stages: (1) identification of the research question (s); (2) identification of relevant databases and studies; (3) selection of studies; (4) data extraction; (5) interpretation, summarization and dissemination of the results.

We will search relevant peer-reviewed, English or French-language articles published between January 1, 2011, and July 31, 2021, without methodological restrictions, in several electronic databases, as well as in general internet sources (Google and Google Scholar).

We focus on articles and reports published between aforementioned dates, because we consider 11 years as a reasonable timeframe to reflect on the extent of research and evidence that is within the realm of ’current’ and valid for informing policy processes and debates. Also, focusing on eleven years will yield a manageable number of articles that could be quickly summarized to inform policy processes and discussions on abortion at the continental level and sub-regions.

Inclusion criteria

We intend to capture all research papers published on abortion in SSA, including those focusing on women, health providers, policymakers, and community members between January 2011 and December 2020. However, to qualify for inclusion, papers have to be:

  • Journal articles (peer-reviewed),

  • English or French language publications.

We will exclude commentaries, conference abstracts, and posters, working papers, policy briefs, editorials, opinion pieces, and debates. Also, we will exclude technical reports and thesis to avoid double counting. We used Table 1 to present our population, intervention, control, outcomes, timeframe, and settings (PICOTS) [22]. We are interested in studies on women and girls, health providers, and community members as well as policymakers on abortion in SSA. We tailored our search and screening approach to mirror the PICOT in Table 1.

Table 1. PICOTS table summarising our scoping review approach.

PICOTS Micro-level Meso-level Macro-level
Population Girls and women who had abortions or post-abortion care and family members Communities and health facilities, pharmacies, health providers, where abortion is obtained Countries, states
Interventions Abortion
Control None
Outcomes Quantitative, qualitative, mixed methods and review research on abortion incidence and magnitude, economic burden, perceptions of abortion, women who abort, postabortion care, abortion policies and laws, reasons and drivers of abortion, unsafe abortion causes and consequences, quality of post-abortion care,
Timeframe January 1, 2011, and July 31, 2021
Settings sub-Saharan Africa

Search strategy for databases

  1. We will conduct an initial search using PubMed followed by an analysis of words in titles, abstracts, and indexes to refine search terms in subsequent steps

  2. We will use the keywords and controlled vocabulary identified in Step 1 to create Mesh terms. Team members will then test our search terms, and the finalized search strategy will be peer-reviewed by an independent researcher who has previously conducted systematic review studies (using PRESS or a similar method). We will then use the terms to search all included databases. We have presented examples of our search terms in two databases in S1 Appendix. All relevant articles emanating from our search will be imported to Covidence, an online software for managing scoping and systematic reviews [24, 25]. Covidence will automatically remove duplicate articles.

  3. The reference list of all identified review studies will be examined to identify other studies not captured through the electronic search. Suitable titles identified through this means will be added to the list of studies for review.

Databases

We will search the following databases PubMed, HINARI, AJOL, Science Direct, SCOPUS, and CINAHL.

Search terms

We have included our search term, developed through our preliminary search and reviewed by an independent researcher with experience in systematic reviews, in S1 Appendix. We have searched PubMed and HINARI using these search terms and will report the number of articles found in these databases.

Study selection

We will use the Covidence software [25]–an online tool that allows reviewers to screen through a plethora of articles simultaneously and for exporting included titles to Excel for analysis. Two researchers will independently assess articles for inclusion by screening the titles, abstracts, and full-texts of studies returned through the search process. Where there are disagreements between the two independent reviewers on the eligibility of a paper for inclusion, a third reviewer will resolve the conflict.

Data extraction

We will use a standardized frame (Table 2: Extraction framework) to extract information from the included articles.

Table 2. Extraction framework.

Key domains Sub-category Description
Author First Indicate where the lead author is based (e.g., African based In Africa, non-African based in Africa, Africa based outside of Africa and non-African not based in Africa)
Last
Author composition Indicate if the paper has a single author or multiple authors
Collaboration types Collaboration analysis Are the collaborators based in the US/Canada or Europe or multiple locales or Africa?
Is there an author from the country of study’s focus? Authorship analysis Indicate if any of the authors are from the country of study
Title Indicate study title
Language Indicate the language of publication
Country Indicate country (ies) where the study was conducted
Study setting Specify the location of study sites (eg, district(s)
Sub-region sub-Saharan Africa, East Africa, West Africa, Central Africa, Southern Africa
Type of publication Indicate the study type (e.g., primary research, and secondary analysis)
Study design Indicate if the study adopted a mixed-methods, qualitative, quantitative designs of a review study
Aim/objectives Describe the stated aim and objectives of the study
Focus of study Intervention study Indicate whether the study described a problem or examine the effect of an intervention
Describing the problem
Key findings Summarize the main results (including an overview of concepts, themes, and types of evidence available), link to the review questions and objectives, and consider the relevance to key groups.
Key Limitations Indicate the limitations of the study.
Publication Year
Funding Describe sources of funding for the included sources of evidence. Describe the role of the funders of the study. Indicate whether the funder (e.g., Africa, European, US, Other north America)
Abstract
Journal
Journal coverage Indicate if the journal is based in the country of study, has and Africa focus or international focus
Journal impact factor Indicate the journal’s impact factor
Link
Type of methodology Indicate the study methodology such as qualitative, quantitative or mixed methods, case studies
Methodology Study design Specify the study design adopted (e.g., cross-sectional design, case study, pre-post study design, longitudinal study)
Population Describe the characteristics of the target population
Sampling strategy Describe how sampling was done if applicable
Data collection Specify the methods of data collection
Outcome measures Indicate the outcome measures for quantitative studies
Data analysis Indicate method of data analysis
Theme Describe the topic (s) addressed in the study
Policy and legal reviews Studies focusing on laws, policies and abortion guidelines
Abortion care methods, quality, access, availability, acceptability
Abortion methods Medical, surgical, traditional
Post-abortion care Quality, access, availability, acceptability, contraceptive counseling
Sources of abortion Pharmacies, drug sellers, unregulated clinics, private clinics, traditional healers and public health facilities
Incidence/magnitude of abortion
Complications/Consequences of abortion
Abortion stigma
Costs of unsafe abortion
Providers Studies describing provider characteristics (i.e. training, behavior, practice, experiences, values, beliefs etc.)
Patient characteristics Studies describing women/girls characteristics (i.e. education etc.)
Community perceptions of abortion, women who abort and post-abortion care
Decision making
Drivers or facilitator of abortion
Male engagement
Maternal mortality
Causes of abortion
Conscientious objection

Data synthesis and presentation of results

We will analyze the data using descriptive statistics and thematic analysis, with results organized in tables and charts and presented into themes that reflect the review objectives. Tables will be used to illustrate how abortion research has evolved from January 2011 to December 2020 in terms of volume, themes, study design, African-led papers, and geography. The PRISMA flow chart will be used to summarize our search and studies included and excluded. A summary narrative that synthesizes the information across key themes, including abortion incidence, burden, cost, post-abortion care, and community perception of abortion, will be developed, critically highlighting the advances and gaps in researchers. Supporting figures will also be developed to present the synthesis, with a focus to draw implications for future research.

Patient and public involvement statement

Patients and the public were not involved in the design of this study. This study is will synthesis publicly available publications, which reported on patients’ and public’s experiences.

Ethics and dissemination

Ethical approval is not required, as we are not collecting primary data but rather analyzing already published papers.

The findings of this study will be disseminated through peer-reviewed publications and conferences as well as in relevant stakeholder fora. In case of any amendments to the protocol following its publication, we will provide the date of each amendment, describe the change(s), and report the rationale for the change(s) in future publications arising from this protocol.

Strengths and limitations of this study

This scoping review will only look at research and publications over 10 years (2011–2020), yet obviously, there are equally important articles preceding that period. We also intend to review data and articles published in English and French only and within sub-Saharan Africa, thus excluding publications in Arabic, Spanish and Portuguese languages. The keywords to be used in the search strategy are broad and may not identify specialized studies in abortion.

Supporting information

S1 Checklist. Preferred reporting items for systematic reviews and meta-analyses extension for scoping reviews (PRISMA-ScR) checklist.

(DOCX)

S1 Appendix. Database search strategy.

(DOCX)

Funding Statement

This research is supported through the funding to APHRC by the Swedish International Development Cooperation Agency (https://www.sida.se/en). The funders had and will not have a role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

References

  • 1.Sedgh G, Bearak J, Singh S, Bankole A, Popinchalk A, Ganatra B, et al. Abortion incidence between 1990 and 2014: global, regional, and subregional levels and trends. The Lancet. 2016;388(10041):258–67. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 2.Sedgh G, Singh S, Shah IH, Åhman E, Henshaw SK, Bankole A. Induced abortion: incidence and trends worldwide from 1995 to 2008. The lancet. 2012;379(9816):625–32. doi: 10.1016/S0140-6736(11)61786-8 [DOI] [PubMed] [Google Scholar]
  • 3.Ganatra B, Gerdts C, Rossier C, Johnson BR Jr, Tunçalp Ö, Assifi A, et al. Global, regional, and subregional classification of abortions by safety, 2010–14: estimates from a Bayesian hierarchical model. The Lancet. 2017;390(10110):2372–81. [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 4.Shah Iqbal H., Elisabeth Åhman. Unsafe Abortion: The Global Public Health Challenge. Management of Unintended and Abnormal Pregnancy2009. p. 10–23. [Google Scholar]
  • 5.Chae S, Desai S, Crowell M, Sedgh G. Reasons why women have induced abortions: a synthesis of findings from 14 countries. Contraception. 2017;96(4):233–41. doi: 10.1016/j.contraception.2017.06.014 [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 6.Shah IH, Ahman E. Unsafe abortion: The global public health challenge. Management of Unintended and Abnormal Pregnancy: Wiley-Blackwell; 2009. p. 10–23. [Google Scholar]
  • 7.Sedgh G, Bearak J, Singh S, Bankole A, Popinchalk A, Ganatra B, et al. Abortion incidence between 1990 and 2014: global, regional, and subregional levels and trends. The Lancet. 2016;388(10041):258–67. doi: 10.1016/S0140-6736(16)30380-4 [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 8.Marston C, Cleland J. Relationships between contraception and abortion: a review of the evidence. Int Fam Plan Perspect. 2003;29(1):6–13. Epub 2003/04/24. doi: 10.1363/ifpp.29.006.03 [DOI] [PubMed] [Google Scholar]
  • 9.Miller G, Valente C. Population policy: Abortion and modern contraception are substitutes. Demography. 2016;53(4):979–1009. doi: 10.1007/s13524-016-0492-8 [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 10.WHO. Department of Reproductive Health and Research. HRP annual report 2016. Geneva: World Health organization, WHO Department of Reproductive Health and Research; 2017. Contract No.: WHO/RHR/HRP/17.06. [Google Scholar]
  • 11.Latt SM, Milner A, Kavanagh A. Abortion laws reform may reduce maternal mortality: an ecological study in 162 countries. BMC Womens Health. 2019;19(1):1. doi: 10.1186/s12905-018-0705-y [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 12.Kim CR, Tunçalp Ö, Ganatra B, Gülmezoglu AM. WHO Multi-Country Survey on Abortion-related Morbidity and Mortality in Health Facilities: study protocol. BMJ Global Health. 2016;1(3):e000113. doi: 10.1136/bmjgh-2016-000113 [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 13.Bearak J, Popinchalk A, Ganatra B, Moller A-B, Tunçalp Ö, Beavin C, et al. Unintended pregnancy and abortion by income, region, and the legal status of abortion: estimates from a comprehensive model for 1990–2019. The Lancet Global Health. 2020;8(9):e1152–e61. doi: 10.1016/S2214-109X(20)30315-6 [DOI] [PubMed] [Google Scholar]
  • 14.Singh S, Maddow‐Zimet I. Facility‐based treatment for medical complications resulting from unsafe pregnancy termination in the developing world, 2012: a review of evidence from 26 countries. BJOG: An International Journal of Obstetrics & Gynaecology. 2016;123(9):1489–98. doi: 10.1111/1471-0528.13552 [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 15.Guillaume A, Rossier C, Reeve P. Abortion around the world. An overview of legislation, measures, trends, and consequences. Population. 2018;73(2):217–306. [Google Scholar]
  • 16.Dixon-Mueller R. Abortion policy and women’s health in developing countries. Int J Health Serv. 1990;20(2):297–314. Epub 1990/01/01. doi: 10.2190/V08N-UE7N-TNBH-RA4P . [DOI] [PubMed] [Google Scholar]
  • 17.Coeytaux FM. Induced abortion in sub-Saharan Africa: what we do and do not know. Stud Fam Plann. 1988;19(3):186–90. Epub 1988/05/01. . [PubMed] [Google Scholar]
  • 18.Brookman-Amissah E, Moyo JB. Abortion Law Reform in Sub-Saharan Africa: No Turning Back. Reproductive Health Matters. 2004;12(sup24):227–34. doi: 10.1016/s0968-8080(04)24026-5 [DOI] [PubMed] [Google Scholar]
  • 19.Blystad A, Haukanes H, Tadele G, Haaland MES, Sambaiga R, Zulu JM, et al. The access paradox: abortion law, policy and practice in Ethiopia, Tanzania and Zambia. Int J Equity Health. 2019;18(1):126–. doi: 10.1186/s12939-019-1024-0 . [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 20.Johnson BR Jr, Lavelanet AF. Realizing abortion law and policy reforms: Lessons from six country case studies. International Journal of Gynecology & Obstetrics. 2018;143(S4):1–2. doi: 10.1002/ijgo.12670 [DOI] [PubMed] [Google Scholar]
  • 21.United Nations Department of Economic and Social Affairs. Ensure healthy lives and promote well-being for all at all ages New York, NY 10017: United Nations Statistics Division (UNSD), a division of the Department of Economic and Social Affairs (DESA); 2019 [cited 2021 23/06]. Available from: https://unstats.un.org/sdgs/report/2019/goal-03/.
  • 22.Coast E, Lattof SR, van der Meulen Rodgers Y, Moore B. Economics of abortion: a scoping review protocol. BMJ open. 2019;9(7):e029939. doi: 10.1136/bmjopen-2019-029939 [DOI] [PMC free article] [PubMed] [Google Scholar]
  • 23.Peters MD, Godfrey CM, Khalil H, McInerney P, Parker D, Soares CB. Guidance for conducting systematic scoping reviews. International journal of evidence-based healthcare. 2015;13(3):141–6. Epub 2015/07/03. doi: 10.1097/XEB.0000000000000050 . [DOI] [PubMed] [Google Scholar]
  • 24.Covidence. Covidence systematic review software, Veritas Health Innovation Melbourne, Australia2019. Available from: www.covidence.org.
  • 25.Kellermeyer L, Harnke B, Knight S. Covidence and Rayyan. Journal of the Medical Library Association: JMLA. 2018;106(4):580–3. Epub 10/01. doi: 10.5195/jmla.2018.513 PMC6148615. [DOI] [Google Scholar]

Decision Letter 0

Ali Rostami

16 Jun 2021

PONE-D-21-11694

Protocol for a scoping review of research on abortion in sub-Saharan Africa

PLOS ONE

Dear Dr. Otukpa

Thank you for submitting your manuscript to PLOS ONE. After careful consideration, we feel that it has merit but does not fully meet PLOS ONE’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 25 July 2021. If you will need more time than this to complete your revisions, please reply to this message or contact the journal office at plosone@plos.org. When you're ready to submit your revision, log on to https://www.editorialmanager.com/pone/ 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 academic 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.

If applicable, we recommend that you deposit your laboratory protocols in protocols.io to enhance the reproducibility of your results. Protocols.io assigns your protocol its own identifier (DOI) so that it can be cited independently in the future. For instructions see: http://journals.plos.org/plosone/s/submission-guidelines#loc-laboratory-protocols. Additionally, PLOS ONE offers an option for publishing peer-reviewed Lab Protocol articles, which describe protocols hosted on protocols.io. Read more information on sharing protocols at https://plos.org/protocols?utm_medium=editorial-email&utm_source=authorletters&utm_campaign=protocols.

We look forward to receiving your revised manuscript.

Kind regards,

Ali Rostami

Academic Editor

PLOS ONE

Journal Requirements:

When submitting your revision, we need you to address these additional requirements.

1. Please ensure that your manuscript meets PLOS ONE's style requirements, including those for file naming. The PLOS ONE style templates can be found at https://journals.plos.org/plosone/s/file?id=wjVg/PLOSOne_formatting_sample_main_body.pdf and https://journals.plos.org/plosone/s/file?id=ba62/PLOSOne_formatting_sample_title_authors_affiliations.pdf

2. Please include captions for your Supporting Information files at the end of your manuscript, and update any in-text citations to match accordingly. Please see our Supporting Information guidelines for more information: http://journals.plos.org/plosone/s/supporting-information.

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.]

Reviewers' comments:

Reviewer's Responses to Questions

Comments to the Author

1. Does the manuscript provide a valid rationale for the proposed study, with clearly identified and justified research questions?

The research question outlined is expected to address a valid academic problem or topic and contribute to the base of knowledge in the field.

Reviewer #1: Yes

Reviewer #2: Partly

**********

2. Is the protocol technically sound and planned in a manner that will lead to a meaningful outcome and allow testing the stated hypotheses?

The manuscript should describe the methods in sufficient detail to prevent undisclosed flexibility in the experimental procedure or analysis pipeline, including sufficient outcome-neutral conditions (e.g. necessary controls, absence of floor or ceiling effects) to test the proposed hypotheses and a statistical power analysis where applicable. As there may be aspects of the methodology and analysis which can only be refined once the work is undertaken, authors should outline potential assumptions and explicitly describe what aspects of the proposed analyses, if any, are exploratory.

Reviewer #1: Yes

Reviewer #2: Yes

**********

3. Is the methodology feasible and described in sufficient detail to allow the work to be replicable?

Descriptions of methods and materials in the protocol should be reported in sufficient detail for another researcher to reproduce all experiments and analyses. The protocol should describe the appropriate controls, sample size calculations, and replication needed to ensure that the data are robust and reproducible.

Reviewer #1: Yes

Reviewer #2: Yes

**********

4. Have the authors described where all data underlying the findings will be made available when the study is complete?

The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception, at the time of publication. 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

**********

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

PLOS ONE 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

**********

6. Review Comments to the Author

Please use the space provided to explain your answers to the questions above and, if applicable, provide comments about issues authors must address before this protocol can be accepted for publication. You may also include additional comments for the author, including concerns about research or publication ethics.

You may also provide optional suggestions and comments to authors that they might find helpful in planning their study.

(Please upload your review as an attachment if it exceeds 20,000 characters)

Reviewer #1: The protocol is well written. I recommend minor revision before acceptance.

1. throughout the manuscript: references should be modified according to style recommended by PLOS journals.

2. Methods

• Please explain why you selected French-language articles?

• Why you limited your searches up to December 31, 2020. Why you don’t extend this time for articles published articles in 2021?

• Web of science is not a database. Do you mean Web of science core collection?

Reviewer #2: comments can be seen in the attached file, including changing references and updating them, mentioning proper references.

I suggest that this section to be divided into :Research question , Data source and research strategy, citation management, eligibility criteria , title and abstract relevance screening, data characterization, data summary and synthesis.

**********

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.

If you choose “no”, your identity will remain anonymous but your review may still be made public.

Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy.

Reviewer #1: No

Reviewer #2: 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.

Attachment

Submitted filename: PONE-D-21-11694_reviewer.pdf

Decision Letter 1

Ali Rostami

5 Jul 2021

Protocol for a scoping review of research on abortion in sub-Saharan Africa

PONE-D-21-11694R1

Dear Dr. Otukpa,

We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements.

Within one week, you’ll receive an e-mail detailing the required amendments. When these have been addressed, you’ll receive a formal acceptance letter and your manuscript will be scheduled for publication.

An invoice for payment will follow shortly after the formal acceptance. To ensure an efficient process, please log into Editorial Manager at http://www.editorialmanager.com/pone/, click the 'Update My Information' link at the top of the page, and double check that your user information is up-to-date. If you have any billing related questions, please contact our Author Billing department directly at authorbilling@plos.org.

If your institution or institutions have a press office, please notify them about your upcoming paper to help maximize its impact. If they’ll be preparing press materials, please inform our press team as soon as possible -- no later than 48 hours after receiving the formal acceptance. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information, please contact onepress@plos.org.

Kind regards,

Ali Rostami

Academic Editor

PLOS ONE

Additional Editor Comments (optional):

Reviewers' comments:

Acceptance letter

Ali Rostami

8 Jul 2021

PONE-D-21-11694R1

Protocol for a scoping review of research on abortion in sub-Saharan Africa

Dear Dr. Otukpa:

I'm pleased to inform you that your manuscript has been deemed suitable for publication in PLOS ONE. Congratulations! Your manuscript is now with our production department.

If your institution or institutions have a press office, please let them know about your upcoming paper now to help maximize its impact. If they'll be preparing press materials, please inform our press team within the next 48 hours. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information please contact onepress@plos.org.

If we can help with anything else, please email us at plosone@plos.org.

Thank you for submitting your work to PLOS ONE and supporting open access.

Kind regards,

PLOS ONE Editorial Office Staff

on behalf of

Dr. Ali Rostami

Academic Editor

PLOS ONE

Associated Data

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

    Supplementary Materials

    S1 Checklist. Preferred reporting items for systematic reviews and meta-analyses extension for scoping reviews (PRISMA-ScR) checklist.

    (DOCX)

    S1 Appendix. Database search strategy.

    (DOCX)

    Attachment

    Submitted filename: PONE-D-21-11694_reviewer.pdf

    Attachment

    Submitted filename: Response to reviewers commentsAA.docx


    Articles from PLoS ONE are provided here courtesy of PLOS

    RESOURCES