Continents (sex) | Number of articles | Sample size | I2 | Begg and Mazumdar test | Prevalence % (95% CI) |
---|---|---|---|---|---|
Asia | |||||
Men | 31 | 85,636 | 99.3 | 0.414 | 11.7 (95% CI 8.8–15.5) |
Women | 51 | 113,431 | 99.3 | 0.188 | 24.3 (95% CI 21.2–27.8) |
Europe | |||||
Men | 4 | 6695 | 98.1 | 0.308 | 9.7 (95% CI 4.4–18.5) |
Women | 8 | 17,786 | 98.7 | 0.710 | 19.8 (95% CI 14.5–26.5) |
America | |||||
Men | 4 | 360,669 | 96.09 | 0.734 | 8.5 (95% CI 3.7–14.1) |
Women | 7 | 567,823 | 99.8 | 1.000 | 15.1 (95% CI 6.9–29.9) |
Africa | |||||
Men | – | – | – | – | – |
Women | 3 | 2018 | 98.9 | 0.296 | 42.4 (95% CI 19.9–56.5) |