Table 1 Daily attack rates and risk ratios of gastroenteritis among students having meals on high-risk stalls of the school canteen, September 1–5
Date | High-risk stalls | Exposed | Non-exposed | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
Total | Cases | AR% | Total | Cases | AR% | RR | 95% CI | P | ||
September 1 | Drinks | 299 | 13 | 4.3 | 777 | 10 | 1.3 | 3.4 | 1.5–7.8 | 0.002 |
Rice flour | 48 | 6 | 12.5 | 1028 | 17 | 1.7 | 7.6 | 2.8–20.2 | 0.000 | |
September 2 | Rice flour | 53 | 3 | 5.7 | 1826 | 26 | 1.4 | 4.0 | 1.2–13.6 | 0.046 |
Fish meal | 81 | 5 | 6.2 | 1798 | 24 | 1.3 | 4.6 | 1.7–12.5 | 0.003 | |
September 4 | Muslim meal | 152 | 9 | 5.9 | 3468 | 77 | 2.2 | 2.7 | 1.3–5.4 | 0.008 |
September 5 | Barbeque | 152 | 6 | 3.9 | 3059 | 41 | 1.3 | 3.0 | 1.2–7.0 | 0.023 |