Table 3. Effects of the intervention on the number and types of bed nets by study group.

	Baseline (2/2006)			Follow-up (2/2007)
	A	B	p (A vs. B)	A	B	p (A vs. B)
Total no of bed nets	528	722		636	775
Serena ITNs	99	160	n.s.	249	224	<0.001
ITNs (earlier study)	56	64	n.s.	59	79	n.s.
Other bed nets	354	466	n.s.	326	465	0.001
Bed net type not clear	14	19	n.s.	1	4	n.s.
Total no of Serena ITNs/total no of bed nets (%)	99/528 (19)	160/722 (22)	n.s.	249/636 (39)	224/775 (29)	<0.001
Total no of ITNs/total no of bed nets (%)	155/528 (29)	224/722 (31)	n.s.	308/636 (48)	303/775 (39)	<0.001

HH = household; No = number; ITN = insecticide-treated bed net; A = intervention A (social marketing program of ITNs+free distribution of ITNs to pregnant women in health centres); B = intervention B (social marketing program of ITNs); information on type of bed net was missing in a few cases; n.s. = non significant (p<0.05).