The Effects of Two Maternal Vitamin A Supplementation Regimens on Serum Retinol in Postpartum Mothers: A Randomised Controlled Trial in Brazil

Table 2

Duration of breastfeeding in Brazilian lactating mothers enrolled in a vitamin A supplementation trial; Recife, Brazil—2007–2009.

Followup	400,000 IU vitamin A		200,000 IU vitamin A		𝑃 value*
	𝑛	%	𝑁	%
2 months
Exclusive breastfeeding	77	65.3	67	56.8	0.313
Breastfeeding	34	28.8	46	39.0	0.367
4 months
Exclusive breastfeeding	46	41.1	39	35.1	0.610
Breastfeeding	52	46.4	45	40.5	0.542
6 months
Exclusive breastfeeding	20	17.7	23	20.7	0.813
Breastfeeding	72	63.7	56	50.5	0.114

*Pearson's chi-square test.