Baseline and follow-up characteristics of pregnant women and children included in the long-term transmission risk analysis according to infant feeding modality.

ANRS 1201/1202 Ditrame-Plus and ANRS 049a DITRAME cohorts, Abidjan, Côte d'Ivoire.
p, test for difference between formula-fed and shortened breastfed children within Ditrame-Plus cohorts of similar scARV regimen.
p1, test for difference between the three groups ZDV, ZDV+sdNVP, ZDV+3TC+sdNVP.
p2, test for difference between the ZDV+sdNVP and ZDV+3TC+sdNVP groups
IQR interquartile range; NA not applicable. 3TC = lamivudine; sdNVP = single-dose nevirapine during labour; ZDV = zidovudine. SD: standard deviation.
†Excluding two children not classified for infant feeding modality. *ART = antiretroviral therapy if WHO clinical stage 4 or WHO clinical stage 3 and CD4<350/mm3 or WHO clinical stage 1/2 and CD4<200/mm3.
**4.8 log10 for a sub-sample of 20 transmitting mothers and 3.7 for a sample of 72 non-transmitting mothers.