Table 1.
Patient characteristics. Mean and standard deviation are reported for continuous variables. The skew for all continuous variables was below 1.5 in magnitude. Sample sizes ranged from 206 to 210 for these measures
| Patient characteristics | Frequency | Percent |
|---|---|---|
| Age in years, mean = 60.4, sd = 16.8 | ||
| <65 | 117 | 55.7 |
| ≥65 | 93 | 44.3 |
| Male gender | 105 | 50 |
| Charlson index, mean = 4.9, sd = 2.9 | ||
| 0 | 7 | 3.3 |
| 1–3 | 71 | 33.8 |
| 4–6 | 79 | 37.6 |
| >6 | 53 | 25.2 |
| Comorbidities | ||
| Myocardial infarction | 54 | 25.7 |
| Congestive heart failure | 51 | 24.3 |
| Peripheral vascular disease | 24 | 11.4 |
| Cerebrovascular disease | 31 | 14.8 |
| Dementia/delirium | 72 | 34.3 |
| Connective tissue disorder | 16 | 7.6 |
| Chronic pulmonary dysfunction | 49 | 23.3 |
| Gastric ulcer disease | 32 | 15.2 |
| Mild liver disease | 17 | 8.1 |
| Diabetes (no end organ damage) | 37 | 17.6 |
| Hemiplegia | 16 | 7.7 |
| Moderate-severe renal disease | 96 | 46.2 |
| Diabetes with end organ damage | 28 | 13.4 |
| Any tumor | 60 | 28.6 |
| Leukemia | 5 | 2.4 |
| Lymphoma | 7 | 3.4 |
| Moderate to severe liver disease | 28 | 13.5 |
| Metastatic solid tumor | 20 | 9.7 |
| AIDS | 3 | 1.4 |
| Intensive care unit | 95 | 45.2 |
| 100-day mortality | 50 | 23.8 |