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. 2019 May 8;14(5):e0215919. doi: 10.1371/journal.pone.0215919

Table 1. Study characteristics.

Study Number Authors and Ref Date Country Resource Participants Context Theory and Method Sample Quality Rating
1 Álvarez-Franco [23] 2013 Colombia (Americas) Upper Middle Women Urban Phenomenology with multiple interviews and observations 8 women C+
2 Dunning [24] 2016 UK (European) High Women Urban Phenomenology with interviews and observations 11 women (and 6 partners) B+
3 Robertson [25] 2017 Canada (Americas) High Women Urban Based on an online survey AND focus groups 8 women C+
4 Snowdon [26] 2012 UK (European) High Women & partners Urban Phenomenology including interviews with women and partners 9 women (and 6 partners) B
5 Thompson [27](a) 2011 New Zealand & Australia (Western Pacific) High Women Urban Prospective mixed methods study utilizing survey data plus qualitative analysis of narrative data. 171 women (completed the initial survey) B
6 Kalim [28] 2009 Bangladesh (South-East Asian) Lower Middle Women Rural Based on surveys and case studies plus interviews with women 38 women plus mother-in-laws C+
7 Ononge [29] 2016 Uganda (African) Low Women & TBA's Rural Phenomenology utilizing in depth interviews with women and TBA's 15 women and 6 TBA's. A-
8 Sibley [30] 2007 Bangladesh (South-East Asian) Lower Middle Women & TBA's Rural Survey based with semi-structured interview questions delivered verbally 80 women (plus TBA's) C+
9 Jangsten [31] 2010 Angola (African) Lower Middle Women Urban Qualitative analysis of open ended questions on a survey with women 102 women C
10 Matsuyama [32] 2008 Nepal (South-East Asian) Low Women, Mothers-in-law & Husbands Urban & Rural Grounded theory approach supplemented by case histories 28 participants B
11 Asowa-Omorodion [33] 1997 Nigeria (African) Lower Middle Women Rural Anthropological investigation using focus groups with women 20 focus groups with 8–12 women in each C
12 Fikree [34] 2004 Pakistan (South East Asian) Lower Middle Women & TBA's Urban Mixed-methods approach utilizing a survey, focus groups and in-depth interviews with women and TBA's 5 focus groups with 8–10 participants plus 15 in depth interviews. C+
13 Thompson [35](b) 2010 Australia (Western Pacific) High Women Urban Prospective mixed methods study utilizing surveys plus qualitative analysis of narrative data. 171 women (completed the initial survey) B
14 Sacks [36] 2017 Uganda & Zambia (African) Low/Lower Middle Women Rural Evaluation as part of a larger initiative to increase facility birth 48 focus groups including 393 women C
15 Begley [37] 2012 New Zealand & Ireland (Western Pacific & European) High Midwives Urban Qualitative descriptive using in-depth interviews and a focus group 27 midwives (18 from NZ and 9 from Ire) A-
16 Jangsten [38] 2010 Sweden (European) High Midwives Urban Qualitative descriptive informed by focus groups 32 midwives in 8 focus groups with 3–8 participants in each. B
17 Kanikasamy [39] 2007 UK (European) High Midwives Urban Mixed-method approach with surveys 10 midwives C
18 Schack [40] 2014 Ghana (African) Lower Middle Midwives Urban Qualitative descriptive informed by individual interviews 12 midwives A-
19 Deepak [41] 2013 India (South East Asian) Lower Middle Providers & Women and mother-in-laws Urban & Rural Qualitative descriptive informed by individual interviews 140 interviews with a variety of stakeholders B-
20 Bazzano [42] 2014 Cambodia (South East Asian) Lower Middle Providers (managerial) National and local policy level providers Qualitative individual interviews and analysis of government and NGO reports 21 stakeholders C
21 Beltman [43] 2013 Malawi (African) Low Healthcare Workers Rural Qualitative descriptive using focus group discussions with pertinent stakeholders 29 stakeholders (8 clinical officers, 14 nurse-midwives and 7 medical assistants) C+
22 bij de Vaate [44] 2002 Gambia (African) Low TBA's (Trained) Rural Qualitative descriptive using interviews and focus groups in an iterative, reflective manner 22 TBA's focus groups with 6–10 participants B-
23 Braddick [45] 2016 Uganda (African) Low Healthcare Professionals Urban & Rural Observational data and information from interviews with healthcare professionals 18 participants including 4 doctors and 14 midwives (3 from the community settings) B
24 Garcia [46] 2012 Guatemala (Americas) Upper Middle TBA's Rural Qualitative descriptive study with 1 focus group 13 TBA's (midwives) B+
25 Collins [47] 2016 Madagascar (African) Low Matrones, Midwives & Physicians Urban & Rural - Qualitative descriptive interviews with a variety of different healthcare workers 12 interviews with various providers. Plants also collected to assess uterotonic properties A-
26 Ith [48] 2013 Cambodia (South East Asian) Lower Middle SBA's Urban & rural Qualitative descriptive informed by interviews and focus groups 25 SBA's via interviews and focus groups A-
27 Natarajan [49] 2016 Sierra Leone (African) Low Providers Urban Evaluation of a PPH training package utilizing surveys and qualitative interviews with key stakeholders 134 providers completed the survey and (x) of these were interviewed C
28 Ngunyulu [50] 2015 South Africa (African) Upper Middle TBA's Rural Qualitative exploratory design to compare TBA practices of PN care (from interview data) with 'Western' practices derived from a literature review 15 interviews with TBA's C+
29 Radoff [51] 2013 Guatemala (Americas) Upper Middle TBA's (and auxiliary nurses) Rural - Qualitative descriptive with focus groups with population of interest 5 FGD's with 30 TBA's and 9 AN's B-
30 Sanghvi [52] 2004 Indonesia (South East Asian) Lower Middle Community midwives, TBA's and CHW's (and women) Rural - Non-randomized experimental design with qualitative interviews to inform acceptability/feasibility aspects 70 providers including 2 FGD's with m/w and 21 interviews with m/w, TBA's or com/ workers C+
31 Than [53] 2017 Myanmar (South East Asian) Lower Middle Midwives, auxiliary midwives and community members Rural Qualitative descriptive interviews and focus groups with a variety of providers and community members 15 m/w and 33 AMWs 2 and 5 FGDs respectively plus 36 community reps participated in the FGDs, B
32 Woiski [54] 2015 Netherlands (European) High Healthcare professionals (and women) Urban Qualitative descriptive with interviews and focus groups 41 different health professionals (9 Obs, 8 Obs in training, 15 midwives & 9 Obs Nurses) in 4 FGD's B+
33 Atukunda [55] 2015 Uganda (African) Low Government Officials, CSO Representatives and secondary healthcare managers National—within the context of policy development Project evaluation looking at availability and distribution of medicines in Africa using interviews with key stakeholders. 82 interviews with a range of officials, representatives and providers. Limited procedural details given B-
34 Durham [56] 2016 Lao PDR (South East Asian) Lower Middle Government Officials, CSO’s, healthcare managers and healthcare professionals Urban & rural Qualitative exploratory with interviews supplemented by quantitative 'frequency of response' data 35 interviews using a semi-structured format B+
35 Spangler [57] 2014 Ethiopia (African) Low Government Officials, CSO’s, healthcare managers and healthcare professionals Regional Qualitative evaluation of an intervention at national, regional and local levels 42 semi-structured interviews with relevant officials B