Infant and maternal characteristics by infant intervention.

Data are number of patients (%) unless stated otherwise.SWEN = up to six weeks of extended-dose nevirapine; SD-NVP = single-dose nevirapine; AZT = zidovudine; IQR = interquartile range.*All p-values generated using Fisher's exact test for categorical variables and Mann-Whitney test for continuous variables.†Maternal antiretroviral therapy was started after delivery in 11 of 12 women in both groups. Genotypes in 10 of these 11 corresponding infants were obtained prior to initiation of maternal antiretroviral therapy.