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Weight-for-age z-scores (WAZ), length-for-age z-scores (LAZ) and weight-for-length z-scores (WLZ) up to 24 months of life by antiretroviral drug (ARV) exposure during pregnancy: first trimester (earlier ARV), second or third trimester (later ARV) and no ARV.
Results from mixed-effects linear regression models based on 358 (WAZ), 356 (LAZ) and 340 (WLZ) children; splines were introduced with knots at 4.5 and 9.6 months.
