Table 1. Selected characteristics of women and children by the three intervention groups at baseline and follow-up^* (Mean values and standard deviations; percentages and numbers of participants).

	Fe and folic acid (n 104)			Multiple micronutrient (n 120)			Lipid-based nutrient supplement (n 129)
Variable	Mean	SD	n/total n	Mean	SD	n/total n	Mean	SD	n/total n
Collected at baseline
Maternal age (years)	27·1	0·5	104	27·3	0·5	120	27·8	0·5	129
Maternal education (years)	7·4	0·4	104	7·4	0·3	120	7·9	0·3	129
Household asset score†	0·07	0·10	104	0·18	0·09	119	−0·02	0·09	125
Nulliparous (%)	27·9		29/104	29·2		35/120	29·5		38/129
Collected at follow-up
Child male (%)	46·2		48/104	45·0		54/120	43·4		56/129
Age at follow-up (years)	5·2	0·1	104	5·1	0·1	120	5·2	0·1	129
Valid days of accelerometer wear (no.)	6·7	0·1	104	6·8	0·1	120	6·8	0·1	129
Accelerometer wake wear time (h)	14·7	0·1	104	14·6	0·1	120	14·8	0·1	129
Time spent in preschool instruction (h)	5·2	0·1	104	5·3	0·1	120	5·2	0·1	129
Preschool attendance (%)	84·6		88/104	85·8		103/120	86·8		112/129
Season measurement: Wet (%)	73·1		76/104	70·0		84/120	75·2		97/129
Home stimulation score at 4–6 years	27·4	0·5	104	28·1	0·4	119	28·3	0·4	129

^*Non-lipid-based nutrient supplement group (control group) was the Fe and folic acid + multiple micronutrient capsule groups.

^†Proxy indicator for household socio-economic status constructed for each household based on ownership of a set of assets (radio, television, etc.), lighting source, drinking water supply, sanitation facilities and flooring materials. Household ownership of this set of assets is combined into an index (with a mean of 0 and an SD of 1) using principal components analysis. Higher value represents higher socio-economic status^(31).