Table 2 Pre-treatment prevalence (%) and proportion of classes of S. mansoni infection by age group and sex in Sanja General Elementary School children, Sanja town, Tacharmachiho district, Northwest Ethiopia, from March to April 2017
Variable | Pre-treatment classes of intensity | ||||||
|---|---|---|---|---|---|---|---|
Age group (years) | No. exam | No. pos. | % prevalence | % light (n) | % moderate (n) | % heavy (n) | χ2 (p) |
6–9 | 105 | 85 | 80.9 | 29.4 (25) | 31.8 (27) | 38.8 (33) | 3.38 (0.47) |
10–14 | 138 | 118 | 85.5 | 24.6 (29) | 40.7 (48) | 34.7 (41) | |
≥ 15 | 2 | 1 | 50 | 0 | 100 (1) | 0 | |
Sex | |||||||
Male | 166 | 138 | 83.1 | 27.5(38) | 34.1 (47) | 38.4 (53) | 1.89 (0.39) |
Female | 79 | 66 | 83.5 | 24.2 (16) | 49.9 (29) | 31.8 (21) | |
Total | 245 | 204 | 83.3 | 26.5 (54) | 37.3 (76) | 36.3 (74) | |