Evaluation of Senegal’s prevention of mother to child transmission of HIV (PMTCT) program data for HIV surveillance

Table 2 Effect of missing routine PMTCT HIV data on estimated HIV prevalence rates

ANC Surveillance HIV Prevalence by Routine PMTCT HIV Test Acceptance
	Total	Refused PMTCT HIV testing	Accepted PMTCT HIV testing
HIV+	122	1	121
Total	8700	42	8658
HIV Prevalence	1.4% (1.2–1.6)	2.3% (0.1–14.1)	1.4% (1.2–1.7)
Measures of Effect of PMTCT Uptake on HIV Prevalence
Absolute difference^a	+ 0.9%
Relative difference^b	+ 64.3%
Percent bias^c	0.00%

^aAbsolute difference is the HIV prevalence in those whose PMTCT HIV status is missing minus the HIV prevalence in those for whom it is present
^bRelative difference is the absolute difference divided by the HIV prevalence among those for whom the PMTCT HIV status is present
^cPercent bias is the HIV prevalence in those for whom PMTCT HIV status is present minus the overall HIV prevalence, divided by the overall HIV prevalence

ISSN: 1471-2334