Table 2.
Univariate Cox regression analyses – time to readmission
| Variable in Analysis | Censored at 30 days | Censored at 180 days | ||
|---|---|---|---|---|
| Hazard Ratio (95% CI) | p | Hazard Ratio (95% CI) | p | |
| Age (per year) | 0.97 [0.96–0.99] | 0.004 | 0.99 [0.98–0.99] | < 0.001 |
| Female Sex | 0.64 [0.49–0.83] | 0.001 | 0.85 [0.80–0.90] | < 0.001 |
| Admission Barthel score (per point) | 1.05 [1.01–1.08] | 0.01 | 1.01 [1.00–1.03] | 0.13 |
| Discharge Barthel score (per point) | 1.01 [0.98–1.04] | 0.34 | 1.01 [0.99–1.02] | 0.39 |
| Discharge Home | 0.87 [0.65–1.16] | 0.30 | 0.74 [0.64–0.85] | < 0.001 |
| Length of Hospital stay (days) | 0.997 [0.994–1.000] | 0.04 | 0.998 [0.997–0.999] | < 0.001 |
| Previous Myocardial Infarction | 1.49 [1.09–2.03] | 0.01 | 1.35 [1.17–1.56] | < 0.001 |
| Previous Stroke | 1.02 [0.61–1.69] | 0.94 | 1.03 [0.82–1.29] | 0.81 |
| Congestive Cardiac Failure | 1.90 [1.32–2.76] | 0.001 | 1.68 [1.41–2.00] | < 0.001 |
| Previous Diagnosis of Cancer | 1.38 [0.96–1.99] | 0.09 | 1.30 [1.10–1.53] | 0.002 |
| Diabetes Mellitus | 1.11 [0.99–1.27] | 0.09 | 1.04 [0.98–1.11] | 0.19 |
| Chronic Obstructive Pulmonary Disease | 1.65 [1.19–2.28] | 0.003 | 1.44 [1.24–1.68] | < 0.001 |
| Medication Count on Discharge (per drug) | 1.01 [0.98–1.05] | 0.63 | 1.02 [1.00–1.03] | 0.08 |
| Maximum CRP Reading (per mg/L) | 1.000 [0.998–1.001] | 0.77 | 1.000 [0.999–1.001] | 0.84 |
| Time to half maximum CRP (per week) | 0.997 [0.991–1.002] | 0.23 | 1.000 [0.999–1.001] | 0.87 |