Table 2.
Moderator variables | Variable category | Included studies | Prevalence % (95% CI) | I2% | % P-value |
---|---|---|---|---|---|
Study group | Blood donor | 16 | 4 (0.03, 0.06) | 98.99 | 0.00 |
Pregnant women | 14 | 5 (0.04, 0.06 | 52.20 | 0.01 | |
Healthcare worker | 6 | 5 (0.05, 0.08) | 89.47 | 0.00 | |
HIV positive | 7 | 5 (0.04, 0.07) | 64.59 | 0.01 | |
Others | 17 | 9 (0.06, 0.11) | 95.69 | 0.00 | |
Study quality | Good quality | 50 | 5 (0.04, 0.06) | 97.74 | 0.00 |
Poor quality | 10 | 12 (0.07, 017) | 98.12 | 0.00 | |
Region/ city | Amhara | 22 | 4 (0.03, 0.05) | 97.95 | 0.00 |
Oromia | 12 | 6 (0.04, 0.09) | 95.08 | 0.00 | |
SNNPR | 9 | 6 (0.04, 0.07) | 67.13 | 0.00 | |
Addis Ababa city | 8 | 10 (0.06, 0.15) | 96 | 0.00 | |
Others | 9 | 6 (0.04, 0.07) | 95.77 | 0.00 | |
Year of publication | 2010–2012 | 5 | 4 (0.02, 0.05) | 94.44 | 0.00 |
2013–2015 | 18 | 7 (0.05, 0.09) | 94.85 | 0.00 | |
2016–2019 | 37 | 6 (0.05, 0.07) | 98.02 | 0.00 | |
Year of study | 2010–2012 | 12 | 5 (0.03, 0.06) | 92.28 | 0.00 |
2013–2015 | 26 | 5 (0.05, 0.06) | 85.59 | 0.00 | |
2016–2019 | 12 | 6 (0.04, 0.07) | 89.54 | 0.00 | |
Sampling techniques | Probability | 20 | 5 (0.04, 0.06) | 80.13 | 0.00 |
Non-probability | 14 | 7 (0.05, 0.09) | 89.56 | 0.00 | |
Survey | 20 | 6 (0.05, 0.07) | 99.07 | 0.00 | |
Not stated | 6 | 5 (0.03, 0.06) | 41.91 | 0.105 | |
Diagnosis method | ELISA | 34 | 4 (0.04, 0.05) | 97.98 | 0.00 |
RDT | 21 | 8 (0.06, 0.10) | 95.07 | 0.00 | |
IA | 4 | 8 (0.03, 0.13) | 93.20 | 0.00 | |
Setting | Urban | 39 | 6 (0.05, 0.07) | 98.41 | 0.00 |
Mixed | 21 | 5 (0.05, 0.06) | 90.93 | 0.00 |
Key: ELISA Enzyme-Linked Immunosorbent Assay, IA Immunoassay, RDT Rapid Diagnostic Test; SNNPR Southern Nations, Nationalities and Peoples Region