| Prevalence of HBsAg | 95% Confidence interval | Heterogeneity (I2%) | P-value |
---|---|---|---|---|
Sub-group analysis by sample size | ||||
1. < 101 | 11.33 | 6.17–16.50 | 76.0 | P = 0.002 |
2. 101–384 | 5.57 | 4.31–6.83 | 85.7 | P < 0.001 |
3. 385–1000 | 6.42 | 4.24–8.61 | 95.1 | P < 0.001 |
4. > 1000 | 5.91 | 0.48–11.54 | 97.6 | P < 0.001 |
Sub-group analysis by year of publication | ||||
1. < 2001 | 12.32 | 3.32–21.39 | 97.1 | P < 0.001 |
2. 2001–2010 | 5.79 | 3.43–8.16 | 88.3 | P < 0.001 |
3. 2011–2021 | 5.71 | 4.68–6.74 | 87.7 | P < 0.001 |
Sub-group analysis by regions of Africa | ||||
1. North Africa | 3.50 | 2.41–4.58 | 83.8 | P < 0.001 |
2. East Africa | 5.51 | 4.03–6.99 | 77.5 | P < 0.001 |
3. Middle Africa | 8.77 | 6.32–11.21 | 72.2 | P = 0.003 |
4. Western Africa | 11.69 | 8.21–15.17 | 91.8 | P < 0.001 |
5. Southern Africa | 2.90 | 1.04–4.99 | - | - |
Sub-group analysis by professions | ||||
1. Physician | 6.30 | 3.54–9.07 | 81.8 | P < 0.001 |
2. Nurses | 6.31 | 4.23–8.40 | 84.5 | P < 0.001 |
3. Laboratory staff | 7.32 | 3.77–10.88 | 59.4 | P = 0.003 |