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. Author manuscript; available in PMC: 2017 Jun 19.
Published in final edited form as: AIDS. 2016 Jun 19;30(10):1655–1662. doi: 10.1097/QAD.0000000000001111

Table 2.

The impact of Zimbabwe’s PMTCT program implementing the 2010 WHO Option A guidelines on MTCT and HIV-free infant survival at 9–18 months

CA-level Mean 95% CI p value
MTCT at 9–18 months
Baseline estimate (CA-level aggregate) 10.03 7.50 12.56
Endline estimate (CA-level aggregate) 4.83 3.35 6.31
Difference: Endline - Baseline estimate −5.19 −8.13 −2.26 0.001
HIV-free infant survival at 9–18 months
Baseline estimate (CA-level aggregate) 89.60 87.07 92.13
Endline estimate (CA-level aggregate) 95.12 93.63 96.60
Difference: Endline - Baseline estimate 5.51 2.58 8.45 <0.001

MTCT = mother-to-child transmission of HIV; CA=catchment area

Note: Pre-post analysis with the catchment area as the unit of analysis. We calculated weighted CA-level MTCT and HIV-free infant survival at both time points and used a paired t-test to estimate the mean change in these unadjusted proportions in each CA between the 2012 survey and the 2014 survey.