Table 1.
Cohort characteristics of 2,105 subjects over age 65 years with community-acquired pneumonia who were hospitalized or presented to the emergency room
| Characteristics | ||
|---|---|---|
| Age, years, mean, SD | 78 | 8 |
| 65–74 years, n | 784 | 37% |
| 75–85 years, n | 886 | 42% |
| 85 years and older, n | 435 | 21% |
| Females, n | 1,060 | 50% |
| Previous comorbidities, n | ||
| Cerebrovascular disease | 278 | 13% |
| Heart disease | 1,069 | 51% |
| Neoplasm | 251 | 12% |
| Renal disease | 205 | 10% |
| COPD | 642 | 30% |
| Mental illness | 278 | 13% |
| Pneumonia severity index, n | ||
| Class I and II | 269 | 13% |
| Class III | 619 | 29% |
| Class IV | 932 | 44% |
| Class V | 285 | 14% |
| Premorbid functional status, n | ||
| Independent mobility | 1,918 | 91% |
| Wheelchair/prosthesis | 122 | 6% |
| Bedridden | 65 | 3% |
| Smoking status, n | ||
| Nonsmokers | 1,169 | 56% |
| Former smoker | 631 | 30% |
| Current smokers | 305 | 14% |
| Nursing home residents, n | 310 | 15% |
| Number of medications at baseline, mean, SD | 4.5 | 2.8 |
| Five or more medications, n | 949 | 45% |
Abbreviations: SD, standard deviation; COPD, chronic obstructive pulmonary disease.