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

Table 5

Serum retinol concentration in Brazilian mothers enrolled in a postpartum supplementation trial at baseline and during followup at 2, 4, and 6 months after treatment with 200,000 UI or 400,000 IU vitamin A; Recife, Brazil—2007–2009.

	400,000 UI vitamin A			200,000 UI vitamin A
Time postpartum	Serum retinol < 1.05 𝜇mol/L			Serum retinol < 1.05 𝜇mol/L			𝑃 value
	𝑁	𝑛	%	𝑁	𝑛	%
Baseline	123	25	20.3	123	27	22.0	0.755*
2 months	126	9	7.1	128	10	7.8	0.839**
4 months	115	5	4.3	113	10	8.8	0.170**
6 months	111	2	1.8	104	03	2.9	0.599**

* 𝑋² Pearson test. **Fisher’s exact test.