Table 4.

Total time to quantify soil-transmitted helminth and Schistosoma mansoni eggs in stool from 360 school children applying Kato-Katz technique on both individual and pooled stool samples (pool size of 5, 10 and 20)

	Individual samples (n = 360)	Pooled samples
		Pool size of 5 (n = 72)	Pool size of 10 (n = 36)	Pool size of 20 (n = 18)
Total time to pool stool samples (95 % CI)	_	6 h 35 min (6 h 22 min; 6 h 48 min)	8 h 29 min (8 h 15 min; 8 h 45 min)	9 h 20 min (9 h 4 min; 9 h 36 min)
Total time to prepare KK thick smears (in batches of 10) (95 % CI)	15 h 29 min (14 h 48 min; 16 h 10 min)	3 h 6 min (2 h 58 min; 3 h 14 min)	1 h 32 min (1 h 29 min; 1 h 37 min)	46 min (45 min; 49 min)
Total time to examine KK thick smears (95 % CI)	49 h 36 min (46 h 50 min; 52 h 26 min)	9 h 30 min (8 h 52 min; 10 h 15 min)	4 h 37 min (4 h 17 min; 4 h 59 min)	2 h 36 min (2 h 15 min; 3 h 4 min)
Total time (95 % CI)	65 h 5 min (62 h 13 min; 67 h 58 min)	19 h 12 min (18 h 29 min; 19 h 57 min)	14 h 39 min (14 h 14 min; 15 h 7 min)	12 h 42 min (12 h 15 min; 13 h 14 min)

KK Kato-Katz, 95 CI 95 % confidence intervals