Table 3.

The geometric mean intensity of S. haematobium-infected children of sentinel primary schools at Al Jabalain and El Salam districts at baseline and 8 months of follow-up

District	Variable	Baseline survey		Follow-up survey		Reduction rate	P-value
		No. positive	GMI	No. positive	GMI
Al Jabalain	Unit
	Al Jabalain	80	15.8	17	8.0	49.4	<0.001
	Assalaya	28	10.8	7	7.8	27.8	<0.001
	Jazeera Aba	4	22.8	0	0	100
	Joda	3	12.6	1	2	84.1	0.31
	Kenana	18	8.0	2	4.9	38.8	0.01
	Rabak	16	28.1	3	5.2	81.5	<0.001
	Subtotal	149	14.5	30	7.1	51.0	<0.001
El Salam	Unit
	Al Rawat	83	24.8	25	10.4	58.1	<0.001
	Al Zelit	131	17.4	5	3.5	79.9	<0.001
	Al Naeem	105	18.7	31	19.6	−4.8	<0.001
	Al Kewaik	33	9	2	4.9	45.6	<0.001
	Al Migainis	54	20.8	21	7.8	62.5	<0.001
	Subtotal	406	18.5	84	11.2	39.5	<0.001
Total	Gender
	Boys	424	17.8	88	12.3	30.9	<0.001
	Girls	131	15.8	26	4.8	69.6	<0.001
	Age group
	≤9-year-old	188	18.3	28	9.3	49.2	<0.001
	10~12-year-old	218	17.4	57	11.0	36.8	<0.001
	≥13-year-old	149	16.0	29	8.7	45.6	<0.001
Total		555	17.3	114	9.5	45.1	<0.001

^*GMI (Geometric mean intensity); Number of S. haematobium eggs per 10 ml of urine.

Reduction rate of infection intensity=(GMI at baseline survey-GMI at follow-up survey)/GMI at baseline survey×100.