Fig. 2
Baseline infection prevalence and intensity for gaining control of schistosomiasis studies, by study arm. Figures depict box plots. Horizontal lines in box interiors indicate medians. Box lengths represent the interquartile range (i.e. amount of data between the 75th and 25th percentile), + signs in boxes represent mean infection intensity (in eggs per gram of faeces (for S. mansoni) or per 10 ml of urine (for S. haematobium)) or prevalence in the respective arms 1–6 and the whiskers represent the minimum and maximum infection prevalence or intensity. Sh2, gaining control study in S. haematobium villages; Sm2, gaining control study in S. mansoni endemic villages