Community-based reverse osmosis (RO) water treatment plants provide an interim solution for producing safe drinking water for the endemic areas of chronic kidney disease of unknown etiology (CKDu) in the rural dry zone of Sri Lanka. RO-treated groundwater diminishes the progression of CKDu;...

Survival ratios and death rates for chronic conditions can be estimated from successive, cross-sectional surveys when the condition and the age of onset are obtained. Survival ratios use the estimated population in the first survey period as the denominator and the estimated number of survivors...