Urogenital schistosomiasis elimination in Zanzibar: accuracy of urine filtration and haematuria reagent strips for diagnosing light intensity Schistosoma haematobium infections

Table 3 Sensitivity and specificity of the reagent strip method for S. haematobium diagnosis in children when urine filtration results are considered as reference test

Reference test: urine filtration		Microhaematuria
All individuals included		Positive	Negative	Total
	Positive	1525	605	2130
	Negative	1007	36,070	37,077
	Total	2532	36,675	39,207
Sensitivity of reagent strips		71.6% (69.6–73.5%)
Specificity of reagent strips		97.3% (97.1–97.4%)
Subgroup: 1–5 eggs/10 ml		Positive	Negative	Total
	Positive	371	369	740
	Negative	1007	36,070	37,077
	Total	1378	36,439	37,817
Sensitivity of reagent strips		50.1% (46.5–53.8%)
Subgroup: 6–10 eggs/10 ml		Positive	Negative	Total
	Positive	199	85	284
	Negative	1007	36,070	37,077
	Total	1206	36,155	37,361
Sensitivity of reagent strips		70.1% (64.4–75.3%)
Subgroup: 11–49 eggs/10 ml		Positive	Negative	Total
	Positive	527	119	646
	Negative	1007	36,070	37,077
	Total	1534	36,189	37,723
Sensitivity of reagent strips		81.6% (78.4–84.5%)
Subgroup: 50+ eggs/10 m		Positive	Negative	Total
	Positive	428	32	460
	Negative	1007	36,070	37,077
	Total	1435	36,102	37,537
Sensitivity of reagent strips		93.0% (90.3–95.2%)

ISSN: 1756-3305