Table 3.
Univariate Cox Proportional Hazard Ratios for the Effect of Each Predictor on Time to Nonsurgical Overnight Hospital Admission
| Predictors | Hazard Ratio (95% Confidence Interval) | p Value |
| Demographics | ||
| Race (African American vs Caucasian) | 0.742 (0.594–0.927) | .0085 |
| Age | 1.029 (1.013–1.045) | .0004 |
| Gender (female vs male) | 0.952 (0.763–1.187) | .6614 |
| Married (yes vs no) | 0.856 (0.686–1.068) | .1686 |
| Residence (rural vs urban) | 0.991 (0.794–1.236) | .9341 |
| Neuropsychological characteristics | ||
| MMSE | 1.005 (0.981–1.029) | .6898 |
| Depressive symptoms | 1.089 (1.042–1.138) | .0002 |
| Anxiety | 0.956 (0.931–0.981) | .0007 |
| MCS | 0.982 (0.971–0.992) | .0007 |
| Personal/family resources | ||
| Education | 1.000 (0.967–1.034) | 1.0000 |
| Private insurance (yes vs no) | 1.168 (0.936–1.457) | .1689 |
| Social support and social structure | ||
| Social support score | 1.044 (1.003–1.087) | .0371 |
| Perceived discrimination | 0.876 (0.779–0.985) | .0267 |
| Need | ||
| PCS | 0.970 (0.962–0.978) | <.0001 |
| ADL limitations | 1.194 (1.104–1.291) | <.0001 |
| SPPB composite score | 0.919 (0.890–0.949) | <.0001 |
Notes: ADL = activities of daily living; MCS = the SF-12 mental component scale; MMSE = Mini-Mental State Examination; PCS = the SF-12 physical component scale; SPPB = Short Physical Performance Battery.