Table 3 Relative risk and 95% confidence interval according to mussels consumption: stratified analysis.
From: Norovirus gastroenteritis general outbreak associated with raw shellfish consumption in South Italy
No. Exposed | No. Cases | Attack Rate (%) | Relative Risk | 95% Confidence Interval | p value | ||
|---|---|---|---|---|---|---|---|
eating raw mussels = "yes" (n = 80) eating cooked mussels | 70 | 59 | 84.3 | 0.84 | 0.76 | 0.93 | >0.05 |
eating raw mussels = "no" (n = 59) eating cooked mussels | 42 | 30 | 71.4 | 3.04 | 1.26 | 7.30 | <0.001 |
Summary Risk Ratio | 1.38 | 1.00 | 1.91 | ||||