Fig 4. Line plots by survey of the percent chance a school with a given Schistosoma haematobium prevalence of heavy intensity infections is below the microhematuria threshold.

Panel A is for a 10% microhematuria threshold, panel B for 13%, and panel C for 15%. Estimates utilized children aged 6–15 years from Burkina Faso, Mali, Niger, Tanzania, and Zambia participating in schistosomiasis control program activities between 2003 and 2008. Full description of the methods is in S1 Text. The dashed line indicates a 90% chance of being below the threshold.