Table 2. The sensitivity of individual and pooled examination strategies at the level of the schools.

A school is defined positive if either at least one egg is found in any of the individual samples or any of the 5 pooled samples.

Parasite species	Number of positive schools	Sensitivity (%) [95% CI]		p–value for pair-wise comparison
		Individual samples	Pooled samples
A. lumbricoides	32	93.8	62.5	<0.001
		[84.4–100]	[46.9–78.1]
T. trichiura	9	88.9	22.2	0.005
		[66.7–100]	[0–55.6]
Hookworms	21	100	61.9	<0.001
		[100–100]	[42.9–81.0]
S. mansoni	8	100	75.0	<0.001
		[100–100]	[37.5–100]