Table 1.
Baseline Characteristics of the Study Population
| Characteristic | Patients (N = 460) |
|---|---|
| Age (y), mean ± SD | 80.0 ± 6.5 |
| Male, n (%) | 183 (39.8) |
| Nonwhite, n (%) | 69 (15.0) |
| Nursing home residence, n (%) | 30 (6.5) |
| Education (y), mean ± SD* | 11.0 ± 3.6 |
| Modified Blessed DRS score, mean ± SD* | 1.5 ± 2.0 |
| Dementia, n (%)—define as mBDRS≥4* | 56 (13.2) |
| Any ADL impairment, n (%) | 162 (35.2) |
| APACHE II score, mean ± SD | 15.6 ± 4.1 |
| Charlson score, mean ± SD | 2.7 ± 2.2 |
| Principal diagnosis, n (%) | |
| Chronic lung disease | 55 (12.0) |
| Congestive heart failure | 54 (11.7) |
| Pneumonia | 49 (10.7) |
| Gastrointestinal disease | 47 (10.2) |
| Ischemic heart disease | 42 (9.1) |
| Diabetes mellitus or metabolic disorder | 17 (3.7) |
| Cerebrovascular disease | 13 (2.8) |
| Cancer | 12 (2.6) |
| Renal failure | 9 (2.0) |
| Anemia | 5 (1.1) |
| Other | 157 (34.1) |
*
Missing values present for some variables. Education, missing = 3; mBDRS score, missing = 35.
SD, standard deviation; mBDRS, modified Blessed Dementia Rating Scale; ADL, activities of daily living; APACHE II, Acute Physiology and Chronic Health Evaluation II.