Table 3

Frequency of comorbid conditions in adults with community-acquired pneumonia

Comorbid conditionNumber of cohorts with data*Patients with condition (%)
Previous pneumonia103.2–33.8
Chronic respiratory disease259.7–68
 COPD219.4–62
 Asthma93–50.0
Chronic heart disease2310–47.2
 Heart failure271.0–46
Diabetes mellitus484.9–33.0
Cerebrovascular disease/stroke263.2–33
Dementia121.1–33.6
Cancer334.3–18.0
Chronic liver disease360.3–20
Chronic renal disease390.5–26.7
  • *For studies that only reported data separately for each cohort, all cohorts were included; for studies that reported data for the overall study population, the summary data were used.

  • COPD, chronic obstructive pulmonary disease.