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

Table 4

Estimated values* of serum retinol means in the combined group during the monitoring period. Recife, Brazil—2007–2009.

	Time postpartum
	Baseline	2 months	4 months	6 months
	mean (CI95%)	mean (CI95%)	mean (CI95%)	mean (CI95%)
	(𝜇mol/L)	(𝜇mol/L)	(𝜇mol/L)	(𝜇mol/L)
Combined group	1.61 (1.52–1.70)	2.01 (1.93–2.09)	2.11 (2.05–2.16)	2.19 (2.13–2.27)
Combined group*	1.61 (1.52–1.70)	2.00 (1.92–2.08)	2.12 (2.03–2.20)	2.18 (2.11–2.26)

CI: Confidence interval. *Obtained by adjustment of linear regression model with GEE methods.