First author [Reference] | Publication year | Survey year(s) | Country | Study Design | Study population | Outcomes included in the meta-analysis | New Castle Ottawa Scoreb | ||
---|---|---|---|---|---|---|---|---|---|
Maternal Age (years)a | Time point of assessment | Sample size | |||||||
West Africa | |||||||||
 Adanikin [63] | 2013 | 2011–2012 | Nigeria | RCT | Mean = 29.2 | 6 months | 216 | mCPR | 4 |
 Adeyemi [41] | 2005 | 2003–2004 | Nigeria | Prospective cohort | Mean = 28.5 | 9–10 months | 256 | mCPR, unmet need | 4 |
 Eliason [6] | 2013 | 2012 | Ghana | Cross-sectional | Mean = 25.6 | At the clinic | 1914 | – | 4 |
 Sipsma [51] | 2013 | 2006 | Niger | Cross-sectional | Mean = 29 | 6 months | 673 | mCPR | 4 |
 Robinson [37] | 2016 | 2010 | Ghana | Qualitative (FGD) | Range = 15–49 | 0–12 months | 13 | – | 2 |
 Durosinlorun [62] | 2016 | 2000–2014 | Nigeria | Retrospective cohort | Range = < 20 to ≥50 | 6 months | 5992 | – | 4 |
 Iliyasu [53] | 2018 | 2015 | Nigeria | Cross-sectional | Mean = 27 | 12 months | 317 | mCPR | 4 |
 Morhe [54] | 2017 | 2011 | Ghana | Cross-sectional | Mean = 31.1 | 6–12 months | 200 | mCPR | 5 |
East Africa | |||||||||
 Balkus [58] | 2007 | 1999–2003 | Kenya | Prospective cohort | Range = 18–42 | 12 months | 410 | mCPR | 3 |
 Hubacher [42] | 2013 | 2011–2012 | Kenya | Prospective cohort | Range = 18–39 | 6–12 weeks | 671 | Birth spacing & limiting | 3 |
 Mumah [35] | 2015 | 2007–2010 | Kenya | Prospective cohort | Range = 15–49 | 0–12 months | 3579 | mCPR, birth limiting | 4 |
 Ndugwa [17] | 2011 | 2007–2008 | Kenya | Prospective cohort | Range = 11–52 | 0–12 months | 2994 | mCPR, birth limiting | 3 |
 Abera [10] | 2015 | 2013 | Ethiopia | Cross-sectional | Mean = 27.2 | 6 weeks-12 months | 703 | mCPR, birth spacing & limiting | 5 |
 Abraha [11] | 2017 | 2015 | Ethiopia | Cross-sectional | Mean = 27.4 | 0–12 months | 590 | mCPR, birth spacing & limiting | 5 |
 O’Shea [36] | 2014 | 2013 | Malawi | Cross-sectional | Range = 18–35+ | 0–12 months | 634 | – | 3 |
 Keogh [50] | 2015 | 2008 | Tanzania | Cross-sectional | Range = 15–35+ | 6–12 months | 5284 | mCPR, birth spacing & limiting | 3 |
 Mengesha [43] | 2015 | 2012 | Ethiopia | Cross-sectional | Mean = 28.3 | 12 months | 899 | mCPR, birth spacing & limiting | 5 |
 Shabiby [57] | 2015 | 2012 | Kenya | Cross-sectional | Mean = 26 | At discharge after birth | 185 | – | 3 |
 Sileo [44] | 2015 | 2012 | Uganda | Cross-sectional | Mean = 25.8 | 3 months | 258 | mCPR, unmet need | 4 |
 MCHIP [39] | 2012 | 2008–2009 | Kenya | Cross-sectional (DHS data) | Range = 15–49 | 0–12 months | 2264 | Unmet need, birth spacing & limiting | 3 |
 Achwoka [55] | 2017 | 2013 | Kenya | Cross-sectional | Mean = 25.8 | 8–10 months | 955 | mCPR | 5 |
 Gebremariam [59] | 2017 | 2015 | Ethiopia | Cross-sectional | Mean = 30.8 | 6–12 months | 605 | mCPR | 5 |
 Gebremedhin [60] | 2018 | 2015 | Ethiopia | Cross-sectional | Range = 15–49 | 12 months | 803 | mCPR | 4 |
South Asia/South East Asia | |||||||||
 Chhabra [13] | 2016 | 2014 | India | Cross-sectional | Range = 15–40 | 8 weeks | 117 | mCPR | 2 |
 Kashyap [14] | 2016 | 2015 | India | Cross-sectional | Range = 18–35 | 10 weeks | 178 | mCPR | 2 |
 Mody [48] | 2014 | 2008 | India | Cross-sectional | Range = 17–45 | 6 months | 1049 | mCPR | 3 |
 Withers [38] | 2010 | 2002–2003 | Indonesia | Cross-sectional | Mean = 29.9 | 0–12 months | 1528 | mCPR | 5 |
 FP seminar [40] | 2014 | NA | India | Seminar report | NS | 0–12 months | 56 countries | – | 2 |
 Navodani [56] | 2017 | 2014 | Sri Lanka | Cross-sectional | Mean = 29.4 | 8–12 weeks | 1112 | mCPR | 5 |
 Wilopo [49] | 2017 | 2015 | Indonesia | Cross-sectional | Range = 15–49 | 6 months | 1415 | mCPR, unmet need | 4 |
Middle East/North Africa | |||||||||
 Elweshahi [45] | 2018 | 2016 | Egypt | Cross-sectional | Mean = 30 | 12 months | 1500 | mCPR, unmet need | 5 |
Multi-regional (South Asia/Sub-Saharan Africa/Central America) | |||||||||
 Moore [16] | 2015 | 2005–2012 | 21 LMIC | Cross-sectional (DHS data) | Range = 15–49 | 0–12 months | 21 countries | – | 3 |
 Ross [9] | 2001 | 1991–1996 | 27 countries | Cross-sectional (DHS data) | Range = 15–49 | 0–12 months | 27 countries | – | 3 |
 Pasha [8] | 2015 | 2011–2012 | India, Pakistan, Zambia, Kenya, Guatemala | Prospective cohort | Range = < 20 to ≥30 | 6 weeks | 36,687 | mCPR, unmet need, birth spacing & limiting | 3 |
 Hounton [52] | 2015 | 2004–2013 | Ethiopia, Malawi, and Nigeria | Cross-sectional (DHS data) | Range = 15–49 | 3 months | 3 countries | – | 3 |