Main characteristics of the sample population.

*Percentage or otherwise specified
†Mean±standard deviation
‡Median [Interquartile Range]
$Score based on materials used for the roof, walls and floor
§Score based on possession of 8 items (Yes = 1; No = 0 for motorbike, oxcart, bicycle, clock, radio, canoe, fishnet and mosquito net), plus cattle categorized by number of head (0 = 0; 1 = 1; 2/3 = 2; 4/6 = 3; 7+ = 4). The score is then converted in monetary value of possessions.