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Influenza vaccine effectiveness against hospitalization by age groups
| Age group (years) | Number of vaccinated patients | Vaccinated | Not vaccinated | Odds ratio OR | IVE % | ||
|---|---|---|---|---|---|---|---|
| Flu (+) | Flu (−) | Flu (+) | Flu (−) | ||||
| 3–6 | 31 | 9 | 22 | 225 | 318 | 0.58 | 42.0 |
| 7–17 | 29 | 5 | 24 | 127 | 179 | 0.29 | 70.6 |
| Sub-total children | 60 | 14 | 46 | 352 | 497 | 0.43 | 57.0 |
| Sub-total adults | 35 | 8 | 27 | 391 | 499 | 0.38 | 62.0 |
| Total | 95 | 22 | 73 | 743 | 996 | 0.4 | 60.0 |
