Origin of bed nets by study group at baseline and follow-up.

HH = household; ANC = antenatal care service in health centre; 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 bed net origin was missing in a few cases; n.s. = non significant (p<0.05).