Table 1.
Patients with respiratory infections according to case definition and pH1N1 status, demographic and clinical characteristics, hospital-based surveillance of acute respiratory infections, Berlin 2009/10
| Cases Definition (number of cases) | % male | Median age, females* | Median age, males | % requiring ICU treatment | % requiring mechanical ventilation | % pH1N1 positive among tested | Duration of hospital stay (median) | Case fatality |
|---|---|---|---|---|---|---|---|---|
| CD1 (n = 1,025) | 61%* | 49 y | 51 y | 12% | 6% | 6% | 6 days | 4% |
| CD1b (n = 742) | 62%* | 50 y | 51 y | 11% | 5% | 4% | 6 days | 4% |
| CD4 (n = 283) | 57%* | 45 y | 50 y* | 14% | 7% | 7% | 7 days | 2% |
| pH1N1-positive (n = 20) | 65% | 42 y | 46 y | 20% | 7% | 100% | 6 days | 0% |
* statistically significant (p < 0.05) when compared to female cases
See text and Figure 1 for explanation of CD1, 1b and 4