Area of residence was divided into three groups (‘Rural area or village’, ‘Small or middle sized town’ and ‘Large town’) based on self-report.
exploredata-ZA5235_Varv391 exploredata-ZA5564_VarV602 exploredata-ZA5613_Vard25 exploredata-ZA5852_Vard25 exploredata-ZA4972_Varv431