Outcome | Complicated parapneumonic effusion/empyema | No complicated parapneumonic effusion/empyema | p Value |
Length of stay (days) | 16 (11–26) | 5 (2–10) | <0.0001 |
Intensive care unit admission | 21.7% | 7.7% | <0.0001 |
30-Day mortality | 8.7% | 8.4% | 0.9 |
The p values refers to comparisons between patients with and without complicated parapneumonic effusion and empyema using the χ2 test, except for length of stay (Mann–Whitney U test).