Table 1 Summary of research articles included in this systemic review and meta-analysis of infertility Table 1 Summary of research articles included in this systemic review and meta-analysis of infertility Table 1 Summary of research articles included in this systemic review and meta-analysis of infertility Table 1 Summary of research articles included in this systemic review and meta-analysis of infertility Table 1 Summary of research articles included in this systemic review and meta-analysis of infertility Table 1 Summary of research articles included in this systemic review and meta-analysis of infertility Table 1 Summary of research articles included in this systemic review and meta-analysis of infertility Table 1 Summary of research articles included in this systemic review and meta-analysis of infertility Table 1 Summary of research articles included in this systemic review and meta-analysis of infertility
Study characteristics Study characteristics Study characteristics Study characteristics Prevalence of infertility(%) Prevalence of infertility(%) Prevalence of infertility(%)
Year of survey Country Research type Population Overall Primary Secondary Risk of bias
Webb and Holman, 1992 1988 Perth, Australia Cross sectional study 16 to 44, women 3.55 0.80 NA Moderate
Kreisel et al., 2020 2016 palau Cross sectional study ≥18, men and women 39.68 NA NA Moderate
van Roode et al., 2015 2015 Dunedin, New Zealand Cohort/prospective studies 42 and 43, women 9.82 NA NA Low
Stephen and Chandra, 2006 1982 America Cross sectional study 15 to 44, married women 8.50 NA NA Moderate
1988 7.90 NA NA
1995 7.10 NA NA
2002 7.40 NA NA
Zhou et al., 2018 2011 China Cross sectional study 20 to 49, women 24.95 15.13 9.64 Low
Esmaeilzadeh et al., 2012 2010 Iran and Pakistan Cross sectional study 20 to 45, women 15.54 12.21 1.85 Moderate
Polis et al., 2017 2013 Nigeria Cross sectional study 18 to 44, women 31.10 17.40 34.10 Moderate
Bushnik et al., 2012 2010 Canada Cross sectional study 18 to 44, women 14.02 NA NA Low
Philippov et al., 1998 1998 tomsk, Russia Cross sectional study 18 to 45, women 16.70 3.80 12.90 High
Rostad et al., 2013 1940 Norway Cross sectional study 50 to 59, women 10.09 NA NA Moderate
1950 12.74 NA NA
Zhang et al., 2014 2012 Beijing, China Cross sectional study 27 to 57, women 4.09 3.14 0.96 Moderate
Fuentes and Devoto, 1994 1990 San, America Cross sectional study 15 to 45, women 10.14 NA NA Moderate
Righarts et al., 2015 2010 Otago, New Zealand Cross sectional study 25 to 50, women 21.66 NA NA Moderate
Sundby and Schei, 1996 1993 Norway Cross sectional study 40 to 42, women 10.26 NA NA Moderate
Schmidt et al., 1995 1989 Copenhagen, Denmark Cross sectional study 15 to 44, women 15.66 NA NA Moderate
Herbert et al., 2009 1996 Australia Cohort/prospective studies 45 to 50, women 11.02 NA NA Moderate
Sundby et al., 1998 1993 Gambia Cross sectional study census in 1993 9.37 3.20 NA Moderate
Akhondiet al., 2019 2011 Iran Cross sectional study 20-40, married women 16.40 16.19 0.21 Moderate
Cong et al., 2016 2014 Suizhong, China Cross sectional study 20 to 49, women 13.09 0.99 12.10 Moderate
Datta et al., 2016 2012 The British Cross sectional study 16 to 74, men and women 11.52 NA NA Moderate
Thoma et al., 2013 2002 America Cross sectional study 15 to 44, women 7.50 NA NA Moderate
Vahidi et al., 2009 2005 Iran Cross sectional study 19 to 49, women 25.18 NA NA Moderate
Eric et al., 2016 2014 Ouagadougou, Burkina Faso Cross sectional study 480 families 9.69 5.73 3.96 Moderate
Albayrak and Günay, 2007 2004 Turkey Cross sectional study 15 to 49, married women 6.29 NA NA Moderate
Bhattacharya et al., 2009 2007 Scotland, United Kingdom Cross sectional study 31 to 50, women 17.49 10.50 5.29 Moderate
Kazemijaliseh et al., 2015 2015 Tehran, Iran Cohort/prospective studies 18 to 45, women 17.34 NA NA Moderate
Gokler et al., 2013 2012 Turkey Cross sectional study 18 to 49, married women 12.81 4.91 7.89 Moderate