Table 1.

Maternal and sibling background characteristics for full analytic sample.

Variable	Definition	N	Mean	Std. Deviation	P-value*
Maternal Age	Maternal age in years	1235	26.7	5.5	0.61
Maternal Education	Maternal years of education	1235	7.4	3.7	0.56
Children	Number of target mother’s living biological children	1235	1.2	1.2	0.55
Maternal Height	Maternal height in centimeters	1216	158.9	5.7	0.55
Maternal Gestational Age	Maternal gestational age at enrollment in weeks	1235	16.2	3.2	0.91
Maternal Supplement Use	= 1 if mother reported using vitamin and mineral supplements since becoming pregnant	1235	0.9	0.3	0.05
Electricity	= 1 if electricity is main source of household lighting	1235	0.9	0.4	0.45
Sibling Age	Age in months at maternal enrollment into trial	370	35.5	12.0	0.91
Sibling Female	= 1 if sibling is female	370	0.5	0.5	0.72
Maternal Height (Sibling Sub-sample)	Maternal height in centimeters among mothers with a child under age five at enrollment	370	159.2	5.6	0.63

^*P-value for two-sided t-test of difference in means between SQ-LNS group and non-SQ-LNS group.

Notes: ‘N’ indicates the number of mothers for whom post-randomization income data are available. The sample size for ‘sibling’ variables is limited to households with a sibling who was under age five at maternal enrollment into the trial and for whom post-randomization anthropometric data are available.