Prevalence of any infection and moderate-to-heavy intensity infections before and after quality control on data entry.

For each country and species of soil-transmitted helminth, the prevalence of any infection and moderate-to-heavy intensity (MHI) infections and the egg reduction rates (ERRs) following single albendazole treatment were calculated. This was done using the raw duplicate Kato-Katz data provided by data entry person 1 (P1), data entry person 2 (P2) and the dataset corrected for possible data entry errors (Corrected). The ERRs were classified into satisfactory (green), doubtful (yellow) or reduced (red) according to albendazole efficacy thresholds set by the World Health Organization [2]. Values that differ from the values obtained by analyzing the corrected database are highlighted in bold.