Reinfection of urogenital schistosomiasis in pre-school children in a highly endemic district in Northern Zimbabwe: a 12 months compliance study

Table 4 Overall description of attendance and prevalence dynamics of participants at baseline and follow up points

Attendance at Survey points	Baseline		3 months		6 months		9 months		12 months
	n	n (%)	N	n (%)	n	n (%)	n	n (%)	n	n (%)
	n	95% CI	N	95% CI	n	95% CI	n	95% CI	n	95% CI
1	169	42(24.9)	169	24(14.2)	169	16(9.5)	169	10(5.9)	169	3(1.8)
		18.5–32.1		9.3–20.4		5.5–14.9		2.9–10.6		0.4–5.1
2	100	4 (4.0)	0	–	0	–	0	–	0	–
		1.1–9.9
3	11	2(18.2)	11	1 (9.1)	0	–	0	–	0	–
		2.3–51.8		0.2–41.3
4	6	2 (33.2)	6	0	6	0	0	–	0	–
		4.3–77.7		–
5	4	1 (25)	4	1 (25)	4	0	4	0	0	–
		0.6–80.6		0.6–80.6		–
6	18	2(11.1)	18	1(5.6)	18	0	0	–	18	1(5.6)
		1.4–34.7		0.1–27.3		–				0.1–27.3
7	34	8(23.5)	34	3(8.8)	0	–	34	1(2.9)	34	1(2.9)
		10.7–41.2		1.9–23.7				0–15.3		0.1–15.3
8	1	0	1	0	0	–	1	0	0	–
		–		–
9	46	2(4.3)	46	1(2.2)	0	–	0	–	46	–
		0.5–14.8		0.1–11.5
10	11	0	0	–	11	0	0	–	0	–
		–				–
11	4	1(25)	0	–	4	0	4	1 (25)	0	–
		0.6–80.6				–		0.6–80.6
12	41	2(4.9)	0	–	41	4 (9.8)	41	1(2.4)	41	1(2.4)
		0.6–16.5				2.7–23.1		0–12.9		0.1–12.9
13	9	0	0	–	9	0	0	–	9	0
14	8	0	0	–	0	–	8	0	0	–
15	28	3(10.7)	0	–	0	–	28	3(10.7)	28	2 (7.1)
		2.3–28.2						2.3–28.2		0.9–23.5
16	45	2 (4.4)	0	–	0	–	0	–	45	3 (6.7)
		0.5–15.1								1.4–18.3

N: the number of participants examined at a survey point for each group; n(%) is the number and percentage who were S. haematobium positive at each survey point for each group
1: All survey points; 2: Baseline only; 3: Baseline and 3 months only; 4: Baseline, 3 months, and 6 months only; 5: Baseline, 3 months, 6 months and 9 months only; 6: Baseline, 3 months, 6 months and 12 months; 7: Baseline, 3 months, 9 months and 12 months; 8: Baseline, 3 months and 9 months only; 9: Baseline, 3 months, and 12 months; 10: Baseline, and 6 months only; 11: Baseline, 6 months and 9 months only; 12: Baseline, 6 months, 9 months and 12 months only; 13: Baseline, 6 months and 12 months only; 14: Baseline, 9 months only; 15: Baseline, 9 months and 12 months only; 16: Baseline, and 12 months only

ISSN: 2049-9957