|
Incidence per 100 000 individuals of hospital admissions and in-hospital treatment (days) for pneumonia over all in influenza vaccinated individuals (65 – 79 years) compared with the unvaccinated cohort during the influenza- and non-influenza seasons. |
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| Hospital admission |
In-hospital treatment |
|||||||
|
|
|
|||||||
| Influenza seasons |
Vaccinated |
Reduction (95% CI) |
Unvaccinated |
p |
Vaccinated |
Reduction (95% CI) |
Unvaccinated |
p |
|
|
||||||||
| 2003 |
199 |
388 |
1548 |
1781 |
||||
| 49% (0,26–0,99) |
< 0.04 |
13% (0,68–1,1) |
< 0.7 |
|||||
| 2004 |
193 |
310 |
1408 |
1982 |
||||
| 38% (0,28–1,36) |
< 0.15 |
29% (0,53–0,95) |
< 0.02 |
|||||
| 2005 |
144 |
319 |
865 |
1691 |
||||
| 55% (0,28–1,36) |
< 0.04 |
49% (0,34–0,78) |
< 0.001 |
|||||
|
|
||||||||
| Non-influenza seasons |
||||||||
| 2003 |
119 |
49% (0,21–1,20) |
231 |
< 0.2 |
615 |
63% (0,26–0,55) |
1646 |
< 0.001 |
| 2004 |
304 |
- 17% (0,62–2,32) |
253 |
< 0.6 |
2126 |
- 31% (1,12–1,85) |
1482 |
< 0.01 |
| 2005 |
252 |
- 10% (0,60–3,06) |
226 |
< 0.8 |
1983 |
- 20% (0,93–1,70) |
1583 |
< 0.2 |
Christenson et al. Virology Journal 2008 5:52 doi:10.1186/1743-422X-5-52 |
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