Table 1.
Descriptive Statistics for Development and Validation Samples.
| Variable | 2/3rd Development Sample (n=6,233) |
1/3rd Validation Sample (n=3,213) |
|---|---|---|
| Age, mean (SD) | 74.4 (7.2) | 74.1 (7.2) |
| 65-74, % | 56.7 | 59.2 |
| 75-79, % | 19.3 | 17.3 |
| 80-84, % | 13.0 | 12.9 |
| 85-89, % | 8.0 | 7.6 |
| 90+, % | 3.0 | 3.0 |
| Gender | ||
| Female, % | 57.0 | 58.4 |
| Ethnicity, % | ||
| Hispanic, % | 7.0 | 8.2 |
| Non-Hispanic Black, % | 12.0 | 12.4 |
| Non-Hispanic White, % | 79.6 | 78.0 |
| Non-Hispanic Other, % | 1.4 | 1.3 |
| Hospitalizations in prior 2 years, mean (SD) |
0.4 (0.9) | 0.5 (1.0) |
| 0, % | 71.9 | 71.0 |
| 1, % | 18.3 | 18.6 |
| 2, % | 6.3 | 6.6 |
| 3, % | 2.1 | 2.5 |
| 4 or more, % | 1.4 | 1.3 |
| Nights in hospital, mean (SD) | 2.1 (7.1) | 2.3 (13.8) |
| Chronic Conditions | ||
| Hypertension, % | 62.7 | 63.4 |
| Diabetes, % | 20.6 | 20.9 |
| Heart disease not CHF, % | 25.7 | 25.9 |
| Congestive heart failure, % | 4.1 | 3.2 |
| Chronic lung disease, % | 10.6 | 11.6 |
| Arthritis, % | 67.6 | 67.2 |
| Cancer not skin, % | 18.0 | 17.8 |
| Stroke, % | 6.4 | 6.3 |
| Additional Measures in the Benchmark Model | ||
| Low body-mass index, % | 8.3 | 8.6 |
| Difficulty lifting 10 pounds, % | 21.3 | 21.9 |
| Difficulty walking several blocks, % | 30.2 | 31.8 |
| Difficulty with bathing or dressing, % | 7.6 | 6.8 |
| Need help managing money, % | 2.7 | 2.9 |
| Unable to name the vice president, % | 9.4 | 9.9 |