Table 4.

Median and IQR of hemoglobin levels.

n = 250
Variable		Control group (n1=123) Median (IQR)	Experimental group (n2=127) Median (IQR)	t	P value
Hemoglobin levels (g/dl)	Baseline	10 (9.4–10.4)	10 (9.2–10.6)	-0.244	0.807
	After intervention	10.2 (9.8–10.6)	10.8 (10.2–11.1)	-5.365	<0.001***
	Before delivery	10.3 (10–10.9)	10.7 (10.1–11.2)	-2.950	0.003*

Mann Whitney U test, P * ** < 0.001 compared to the control group; values are shown in median (IQR).