Table 2 Outcomes in patients with complicated parapneumonic effusion or empyema
OutcomeComplicated parapneumonic effusion/empyemaNo complicated parapneumonic effusion/empyemap Value
Length of stay (days)16 (11–26)5 (2–10)<0.0001
Intensive care unit admission21.7%7.7%<0.0001
30-Day mortality8.7%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).