Table 2 Incidence and reduction of hospital admissions and in-hospital treatment (days) for influenza with or without respiratory disease per 100 000 in vaccinated and unvaccinated cohorts during the influenza seasons (1 December – 31 May), 2003 – 2005.
From: Effect of influenza and pneumococcal vaccines in elderly persons in years of low influenza activity
Hospital admission | In-hospital treatment | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Incidence | Reduction | Incidence | Reduction | ||||||
Age-group | Vaccinated | Unvaccinated | (95% CI) | p | Vaccinated | Unvaccinated | (95% CI) | p | |
2003 | |||||||||
65 – 79 | 0 | 19 | 0 | 98 | |||||
≥ 80 | 39 | 103 | 62% (0,08–1,84) | < 0.2 | 254 | 826 | 69% (0,17–0,57) | < 0.001 | |
2004 | |||||||||
65 – 79 | 55 | 63 | 14% (0,46–1,59) | < 0.8 | 175 | 379 | 54% (0,27–0,80) | < 0.01 | |
≥ 80 | 301 | 297 | - 1% (0,53–1,90) | < 0.96 | 1683 | 3073 | 46% (0,43–0,69) | < 0.001 | |
2005 | |||||||||
65 – 79 | 83 | 103 | 20% (0,36–1,76) | < 0.6 | 471 | 540 | 13% (0,62–1,40) | < 0.4 | |
≥ 80 | 441 | 351 | - 21% (0,73–2,2) | < 0.5 | 2684 | 2297 | - 15% (0,94–1,45) | < 0.2 | |