Table 5. Mean and range of the district-level intra-cluster correlation coefficient (ICC) for schistosomiasis prevalence in Malawi, Côte d’Ivoire and Liberia, as estimated from empirical mapping survey datasets.

N indicates the number of endemic mapping units (usually districts) included in the calculation.

Country	Pooled schistosomiasis		S. haematobium		S. mansoni
	ICC mean (range)	N	ICC mean (range)	N	ICC mean (range)	N
Malawi	0.129 (0.015–0.382)	13	0.110 (0.016–0.372)	13	0.333 (0.013–0.751)	13
Côte d’Ivoire	0.176 (0–0.697)	41	0.150 (0–0.774)	36	0.192 (0–0.751)	40
Liberia	0.039 (0–0.263)	55	0.080 (0–0.680)	44	0.037 (0–0.322)	53