Univariate and multivariate analyses of covariates for cases and controls.

∞Note: all variables were adjusted for: sex, marital status, ‘ever’ went to school, ‘ever’ owned shoes, currently owns shoes, wearing protective shoes, foot cleanliness, income, had shoes before age 30, months spent on farming, time spent walking to and frequency of traveling to the regular market.¥unmarried included: single, divorced, separated, and widowed; NA = variable was not included in the final regression model; Data are number (%) or mean (SD) or median (Minimum - Maximum).