Covariates | Two covariate model | Final model | |||||
---|---|---|---|---|---|---|---|
z score change (95% CI) | p value | z score change (95% CI) | p value | ||||
HIV uninfected^{*} | −0.27 (0.02, −0.58) | 0.074 | −0.15 (0.19, −0.51) | 0.376 | |||
Male sex | 0.11 (−0.18, 0.42) | 0.439 | |||||
First born | 0.11 (−0.22, 0.45) | 0.509 | |||||
Lower father’s income | −0.08 (0.22, −0.39) | 0.588 | |||||
Maternal age ⩾ 30 years | −0.27 (0.05, −0.60) | 0.100 | −0.18 (0.11, −0.48) | 0.224 | |||
Mother’s education ⩽ 14 years | −0.19 (0.10, −0.50) | 0.204 | |||||
Maternal drug addiction in pregnancy | −0.50 (−0.04, −0.97) | 0.034 | −0.49 (−0.04, −0.93) | 0.030 | |||
Maternal smoking in pregnancy | −0.49 (−0.04, −0.94) | 0.032 | −0.45 (−0.01, −0.90) | 0.044 | |||
HIV mothers’ symptomatic infection | −0.60 (0.12, −1.34) | 0.104 | −0.69 (0.01, −1.39) | 0.054 |
Values are the estimated change in mean length for age z score outcome for the indicated covariate exposure category versus its complementary group. The two covariate model column gives the unadjusted effect of the HIV status (uninfected versus reference) (^{*}) and the effect sizes of each covariate after adjustment only for the HIV status. The final (adjusted) model column gives the effect sizes of the two covariates with non-significant results before being dropped and the three covariates that have a p value less than or close to 0.05 in the final model.