Fig. 5

Comparisons of proportions of schools correctly classified sampling 5 schools per district vs 1 or 5 schools per subdistrict for S. haematobium (a) and S. mansoni (b)
Comparisons of proportions of schools correctly classified sampling 5 schools per district vs 1 or 5 schools per subdistrict for S. haematobium (a) and S. mansoni (b)