Table 3 Measure of the effect of PMTCT HIV test status on estimated HIV prevalence, Brazil 2010–2012
ANC SS test results by availability of PMTCT HIV test | |||||
|---|---|---|---|---|---|
Total | Percent bias | Prevalence ratio difference | |||
PMTCT received | PMTCT not received | ||||
HIV + | 119 | 89 | 30 | ||
Total | 36,016 | 30,588 | 5428 | ||
HIV prevalence | 0.37 (0.29–0.46) | 0.33 (0.25–0.44) | 0.59 (0.38–0.91) | −10.80% | 0.56 |
PMTCT missing | PMTCT not missing | ||||
HIV + | 126 | 1 | 125 | ||
Total | 36,713 | 732 | 35,981 | ||
HIV prevalence | 0.38 (0.31–0.48) | 0.48 (0.07–3.3) | 0.38 (0.30–0.48) | 26.3% | 1.26 |