2.4. Other covariables
SECONDARY
We collected the following covariables by face-to-face interview using standard procedures in the parent trial. We included parent age (continuous), education (<3 years, primary, secondary, ≥high school) and occupation (farmer, others), antenatal randomized regimens with durations (folic acid or folic acid plus iron <180 days, folic acid plus iron ≥180 days, multiple micronutrients <180 days, and multiple micronutrients ≥180 days) accounting for prior findings (