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) | |
χ2 chi-square, p p value, No number, Pos positive