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Exposure to drinking water from Lilla Edet water treatment plant (WTP), or drinking water from other sources, and risk of developing symptoms of acute gastroenteritis
| Exposure | Cases, n (%) | Controls, n (%) | Total (N) | OR | 95% CI | P |
|---|---|---|---|---|---|---|
| Drinking water from | ||||||
| Lilla Edet WTP | 318 (27) | 866 (73) | 1184 | 4·73 | 3·53–6·32 | <0·001 |
| Other sources | 61 (7) | 785 (93) | 846 | 1 | ||
OR, Odds ratio; CI, confidence interval.
