Demographic and socio-economic characteristics of households and household heads participating in the baseline and follow-up surveys.

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 ethnicity and religion was missing in a few cases; n.s. = non significant (p<0.05).