Table 2.
Risk factor | Hazard ratio (95% CI) | p value |
---|---|---|
Bacterial pneumonia | 1.51 (0.30–7.60) | 0.615 |
Influenza A | 11.40 (1.97–65.86) | 0.007 |
Chronic obstructive pulmonary diseases | 4.83 (0.351–66.49) | 0.239 |
Immunosuppressiona | 10.75 (2.23–51.72) | 0.003 |
aImmunosuppression includes patients who are neutropenic or receiving corticosteroids or chemotherapy