Univariate Cox regression analyses of the association between primary outcome and the existing clinical risk scores and socioeconomic parameters
| Variables | HR (95% CI), p Value |
|---|---|
| Clinical scores | |
| Score 1: Yale CORE Score (per 1%) | 1.07 (1.04 to 1.10), <0.01 |
| Score 2: Krumholz score (per 1) | 1.31 (1.13 to 1.53), <0.01 |
| Score 3: Charlson comorbidity index (per 1) | 1.06 (0.99 to 1.14), 0.07 |
| Socioeconomic variables | |
| Marital history | 0.96 (0.56 to 1.66), 0.89 |
| Living alone | 1.10 (0.76 to 1.58), 0.62 |
| Low income | 1.07 (0.77 to 1.47), 0.70 |
| Number of generations in a household (per 1 generation) | 0.91 (0.79 to 1.04), 0.16 |
| Number of housemates (per 1 person) | 0.95 (0.86 to 1.04), 0.26 |
| Number of male housemates (per 1 person) | 0.96 (0.82 to 1.12), 0.62 |
| Number of female housemates (per 1 person) | 0.90 (0.77 to 1.05), 0.19 |
| Discharge to nursing home | 1.76 (1.07 to 2.90), 0.03 |
| Receiving long-term care insurance | 1.56 (1.18 to 2.08), <0.01 |
| Category of long-term care insurance (per 1 grade) | 1.30 (1.11–1.52), <0.01 |
The significance of bold characters is p<0.05.