| Variables | Characteristics | Included studies | Sample size | Prevalence with 95% CI |
| Country | Ethiopia | 14 | 5,475 | 9.22 (6.59, 11.85) | Nigeria | 4 | 2,386 | 2.34 (0.40, 4.58) | Malawi | 2 | 6,011 | 4.00 (1.1, 9.11) | Uganda | 2 | 388 | 8.15 (2.47, 18.79) | South Africa | 4 | 38,600 | 5.56 (3.61, 7.50) | Zambia | 3 | 10,989 | 11.68 (5.61, 17.75) | Cameroon | 2 | 2,386 | 3.92 (3.14, 4.71) | Côte d’Ivoire | 1 | 943 | 9.33 (7.46, 11.19) | Ghana | 2 | 260 | 2.46 (0.58, 4.34) | Tanzania | 1 | 448 | 3.57 (1.85, 5.29) | DRC | 2 | 1,651 | 19.72 (15.86, 23.59) |
| Sample size | <384 | 17 | 3,425 | 8.5 (6.00, 11.01) | ≥384 | 20 | 69,419 | 7.3 (6.07, 8.52) |
| Publication year | <2015 | 17 | 24,943 | 6.72 (5.16, 8.28) | ≥2015 | 20 | 47,901 | 9.01 (7.10, 10.92) |
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