Table 1.
Description of Sample at Time of Initial Hospitalization
| Entire COSI Sample (N = 1,108,060) | Potential Teaching Hospital Users (N = 787,587) | |
|---|---|---|
| Demographics | ||
| Mean age, y (±SD) | 79.1 (6.7) | 79.0 (7.1) |
| Male, % | 41.8 | 41.5 |
| Medicaid recipient, % | 15.8 | 14.0 |
| Income (median of ZIP code) | $30,078 | $32,674 |
| Race/ethnicity, % | ||
| White | 88.3 | 87.4 |
| Black | 7.2 | 7.8 |
| Asian American | 0.5 | 0.7 |
| Hispanic | 2.0 | 2.2 |
| Other race/ethnicity | 1.9 | 1.9 |
| Primary diagnosis, % | ||
| Noncancers | ||
| Myocardial infarction | 17.9 | 17.7 |
| Congestive heart failure | 20.8 | 20.6 |
| Hip fracture | 17.4 | 17.4 |
| Stroke | 20.0 | 20.0 |
| Cancers | ||
| Central nervous system | 0.4 | 0.4 |
| Head and neck | 0.8 | 0.9 |
| Liver and biliary tract | 0.7 | 0.7 |
| Colon | 6.5 | 6.8 |
| Leukemia | 1.7 | 1.7 |
| Lung | 6.7 | 6.9 |
| Lymphoma | 2.6 | 2.6 |
| Pancreas | 1.2 | 1.2 |
| Urinary tract | 3.1 | 3.1 |
| Went to a teaching hospital, % | 12.6 | 17.1 |
COSI, Care after the Onset of Serious Illness.