Table 1.
Characteristics of patients in the derivation and validation cohorts
| Characteristics | Derivation cohort (n=397) | Validation cohort (n=302) | p Value |
|---|---|---|---|
| Mean age (SD) | 75.9 (13.3) | 76.8 (13.3) | NS |
| Mean length of stay (SD) | 8.4 (5.8) | 8 (6.1) | NS |
| Women (%) | 197 (49.6) | 165 (54.3) | NS |
| Medication (%) | |||
| Benzodiazepines | 162 (40.8) | 134 (44.4) | NS |
| Antidepressants | 75 (18.9) | 74 (24.5) | NS |
| Antidementia drugs | 20 (5) | 11 (3.6) | NS |
| Antipsychotics | 24 (6) | 21 (7) | NS |
| Anti-Parkinson's agents | 13 (3.3) | 6 (2) | NS |
| Anticonvulsants | 20 (5) | 16 (5.3) | NS |
| Dependence in activities of daily living (%) | |||
| Personal hygiene and grooming | 155 (39) | 171 (56.6) | <0.05 |
| Dressing and undressing | 155 (39) | 174 (57.6) | <0.05 |
| Getting onto or off toilet | 146 (36.8) | 161 (53.3) | <0.05 |
| Ambulation | 163 (41.1) | 166 (55) | <0.05 |
| Bowel and bladder control | 139 (35) | 122 (40.4) | NS |
| Self-feeding | 109 (27.5) | 102 (33.8) | NS |
NS, not significant.