The Effect of a Maternal Double Megadose of Vitamin A Supplement on Serum Levels of Retinol in Children Aged under Six Months

Table 3

Comparison of characteristics of mothers and children followed up by the study with those who dropped out, Recife, PE, 2007/09.

Characteristics	Study		Drop outs		𝑃^∗
	𝑛	Mean ± SD	𝑛	Mean ± SC
Mothers
Age (years)	224	24.6±6.2	52	23.6±5.5	0.22
Schooling (years)	224	8.8±2.7	52	8.4±2.4	0.27
Per capita income (R$)	222	145.3±97.2	49	133.8±69.0	0.37
BMI (kg/m^2)	176	28.5±4.4	29	27.2±4.6	0.08
Children
Birth weight (g)	224	3313.0±390.0	52	3283.0±415.4	0.57
Males [𝑛 (%)]	224	107 (47.8)	52	26 (50.0)	0.38
Adequate sanitation [𝑛 (%)]	221	171 (77.5)	30	25 (83.3)	0.32

∗Student’s 𝑡-test for unpaired data.