Subgroup | Number of included studies | Total sample size | Prevalence (95% CI) | Heterogeneity statistics | ||
---|---|---|---|---|---|---|
Tau-Squared | I 2 | p-value | ||||
By region | ||||||
Dire Dawa City | 1 | 382 | 15.70 (12.05, 19.35) | – | – | – |
Oromia region | 2 | 606 | 12.11 (06.39, 17.82) | 12.75 | 73.2 | 0.053 |
Addis Ababa City | 2 | 967 | 11.47 (09.46, 13.48) | 0.00 | 0.00 | 0.326 |
Amhara region | 3 | 1248 | 08.65 (05.91, 11.39) | 3.95 | 67.7 | 0.045 |
SNNPR | 1 | 485 | 04.16 (02.38, 05.94) | – | – | – |
By study period | ||||||
Before 2012 | 2 | 967 | 11.47 (09.46, 13.48) | 0.00 | 0.00 | 0.326 |
After 2012 | 7 | 2721 | 09.81 (06.72, 12.91) | 14.89 | 88.2 | < 0.001 |
By quality score | ||||||
Low score | 2 | 665 | 09.55 (01.00, 20.64) | 60.25 | 93.7 | < 0.001 |
High score | 7 | 3023 | 10.24 (08.11, 12.38) | 5.68 | 72.2 | 0.001 |
Total | 9 | 3688 | 09..93 (07.29, 12.57) | 13.28 | 86.8 | < 0.001 |