Table 6. Correlation coefficients between the mean distances of schools to the nearest water points and the infection intensities of S. mansoni.

Infection intensities	P	F	r 2
Based on POC-CCA test
Trace	0.92	0.008	-0.16
1+	0.92	0.009	-0.16
2+	0.34	1.07	0.009
3+	0.38	0.86	-0.01
Based on KK
Light	0.46	0.62	-0.06
Moderate	0.36	0.97	-0.004
Heavy	0.28	1.36	0.04

r²: correlation coefficient, F: F-static from linear model test, P: P-value