Table 1

Definition of explanatory variables used in the analysis

VariablesDefinition and coding
Age group of respondents1=15–19; 2=20–24; 3=25–29; 4=30–34; 5=35–39; 6=40–44; 7=45–49
Type of place of residence1=Urban; 2=Rural
Geographical region1=North Central; 2=North East; 3=North West; 4=South East; 5=South South; 6=South West
Education0=None; 1=Primary; 2=Secondary; 3=Tertiary
Religion1=Christianity; 2=Islam; 3=Other religion/none
Employment0=Unemployed; 1=Employed
Sex of household head1=Male; 2=Female
Household wealth status* 1=Poorest; 2=Poorer; 3=Middle; 4=Richer; 5=Richest
Total children ever born1=1–2; 2=3–4; 3=>4
Modern contraceptive use0=No; 1=Yes
Domestic violence0=No; 1=Yes
Intimate partner violence0=No; 1=Yes
Marital status1=currently married/living with a partner; 2=Not currently married
  • *For the calculation household wealth status, instead of direct income, the volume of durable goods (eg, TV, radio, bicycle) possessed by the household as well as and housing quality (eg, type of floor, wall and roof) are taken into consideration. Each item is assigned a factor score generated through principal component analysis which are then summed and standardised for the households. These standardised scores places the households in a continuous scale based on relative wealth scores. The scores thus obtained from a continuous scale and subsequently categorised into quintiles to rank the household as poorest/poorer/middle/richer/richest to richest.22 For the present study, households in lowest two categories were merged and categorised as poor, and those from middle to richest were merged as non-poor.