Changes in CD4+ T-cell percentages and weight-for-age z-scores after ART initiation by regimen.

EFV: efavirenz; NVP: nevirapine; SE: standard error.aResults shown are from linear mixed effects models with random intercept, exchangeable correlation structure and robust standard error estimation. Interaction terms between EFV and time were included to determine whether trajectories of the outcomes differed between children receiving EFV or NVP. For CD4+ T-cell percentage, a spline term was added at 6 months as trajectories were not linear over time.bAdjusted for hemoglobin, weight-for-age z-score, and age at ART initiation.cAdjusted for hemoglobin, CD4+ T-cell percentage, weight-for-age z-score, and age at ART initiation.