Frequency of comorbid conditions in adults with community-acquired pneumonia
| Comorbid condition | Number of cohorts with data* | Patients with condition (%) |
|---|---|---|
| Previous pneumonia | 10 | 3.2–33.8 |
| Chronic respiratory disease | 25 | 9.7–68 |
| COPD | 21 | 9.4–62 |
| Asthma | 9 | 3–50.0 |
| Chronic heart disease | 23 | 10–47.2 |
| Heart failure | 27 | 1.0–46 |
| Diabetes mellitus | 48 | 4.9–33.0 |
| Cerebrovascular disease/stroke | 26 | 3.2–33 |
| Dementia | 12 | 1.1–33.6 |
| Cancer | 33 | 4.3–18.0 |
| Chronic liver disease | 36 | 0.3–20 |
| Chronic renal disease | 39 | 0.5–26.7 |
*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.