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| No. of students | No. of positives (%) | |||
|---|---|---|---|---|
| E. histolytica | E. dispar | E. coli | ||
| Students with siblings in the school | 400 | 15 (3.8) | 28 (7.0) | 137 (34.3) |
| Students without siblings in the school | 833 | 16 (1.9) | 27 (3.2) | 134 (16.1) |
| Chi-square | 3.689 | 8.959 | 51.991 | |
| p value | 0.055 | 0.0028 | <0.0001 | |
| Odds ratio (95%CI) | 1.99 (0.97–4.07) | 2.25 (1.31–3.87) | 2.72 (2.06–3.59) | |
| Total | 1,233 | 31 (2.5) | 55 (4.5) | 271 (22.0) |
