Sample selection: Sample selection was done using twostage cluster sampling technique with the village as the primary sampling unit. In the first stage, 6 sub-counties were
randomly selected from the 13 sub-counties in Kiboga district using a random-number table. The village was used as the enumeration area. Two villages from each sub-county were
then selected from all villages in a sub-county using the probability proportionate to size method. In the second stage, households in each village were randomly selected, based on
a complete listing of eligible households. Households’ eligibility for inclusion in the study was the presence of a pregnant woman. In households where more than one
pregnant woman lived, one woman was selected randomly. Twenty-six households were selected from each village.