Experimental Design
Sampling procedure: The study will be conducted in two states and the Federal Capital Territory: Enugu, Lagos and FCT Abuja, representing the Eastern, Southern and Northern parts of Nigeria. To ensure a representative sample, we will follow the sampling procedure of proportionate size to randomly sample 20 enumeration areas (EAs) (14 urban EAs and 6 rural EAs) from each of the three States. Enumeration Areas are the primary sampling units designated by the National Population Commission (NPC) and the National Bureau of Statistics (NBS). For each State, 6 rural EAs will be divided into two clusters of 3EAs each to form 1 treated group (TG) and 1 control groups (CG). The same principle will be applied to the urban EAs to form 1 TG and 1 CG. Twelve (12) households will be selected from each of the EAs to give 240 respondents for each State comprising 120 treated households and 120 control households. For the study, we will have a total of 720 respondents comprising two groups, treatment (N = 360) and control (N = 360). A well-structured interviewer-administered questionnaire will be developed and tested for data collection through a pilot survey. Data will be collected using computer-assisted personal interviewing (CAPI) coded into survey solutions.