Table 1.
Study Sample Characteristics
| Variable | Value |
|---|---|
| Mean age ± SD (y) | 80.2±4.9 |
| Women (%) | 56.6 |
| Mean education ± SD (y) | 11.1±2.6 |
| Mean normal gait velocity ± SD (cm/s) | 101.8±16.5 |
| Medical illness (% of sample) | |
| Diabetes | 14.6 |
| Hypertension | 54.5 |
| Myocardial infarction | 6.9 |
| Parkinson′s disease | 0.6 |
| Strokes | 6.4 |
| Arthritis | 15.9 |
| Falls | 27.9 |
| Mean cognitive tests ± SD | |
| BIMC test* (range, 0-32; >7 abnormal)14 | 2.2±2.7 |
| Verbal intelligence quotient (mean, 100±15)16 | 110.7±16.9 |
| Performance intelligence quotient (mean, 100 ± 15)16 | 101.8±7.5 |
| FCSR total recall†(range, 0-48; <45 abnormal)15 | 46.2±1.9 |
| Total digit span (high score better)16 | 15.6±3.8 |
| Digit symbol (high score better)16 | 48.7±14.3 |
| Letter fluency (high score better)17 | 38.5±12.9 |
| Category fluency (high score better)18 | 38.9±13.1 |
| GDS (range, 0-15; >5 abnormal)20 | 1.9±1.7 |