Table 2. Statistically significant variables in the univariate and multivariate cox proportional-hazard regression models at 30-day, 1-year, and 2-year (presented as HR, 95% CI, and P value).
| Variable | 30-day | 1-year | 2-year | |||||
|---|---|---|---|---|---|---|---|---|
| Unadjusted | Adjusted | Unadjusted | Adjusted | Unadjusted | Adjusted | |||
| Positive troponin level elevation | HR: 8.48 (1.07–66.93), P=0.043 | HR: 8.84 (1.02–76.34), P=0.048 | HR: 2.82 (1.26–6.31), P=0.012 | HR: 2.83 (1.16–6.92), P=0.023 | HR: 2.85 (1.33–6.07), P=0.007 | HR: 2.91 (1.26–6.68), P=0.012 | ||
| BNP >287 pg/mL | HR: 7.34 (1.75–156.25), P=0.006 | HR: 4.58 (1.02–20.62), P=0.047 | HR: 5.44 (1.67–17.76), P=0.005 | HR: 3.84 (1.10–13.44), P=0.035 | ||||
| Age | HR: 1.19, (1.02–1.10), P=0.0135 | HR: 1.10 (1.00–1.21), P=0.047 | HR: 1.06 (1.02–1.10), P=0.002 | HR: 1.04 (1.01–1.08), P=0.045 | HR: 1.05 (1.01–1.08), P=0.005 | |||
| Atrial fibrillation | HR: 2.91 (1.43–5.90), P=0.003 | HR: 2.34 (1.06–5.00), P=0.035 | HR: 2.28, (1.17–4.42), P=0.015 | |||||
| Diabetes mellitus | HR: 2.36 (1.11–5.01), P=0.0253 | HR: 2.47 (1.21–5.04), P=0.013 | ||||||
| Number of readmissions | HR: 1.26 (1.01–1.56), P=0.038 | HR: 1.22 (1.01–1.48), P=0.041 | ||||||
BNP, B-type natriuretic peptide level; HR, hazard ratio; CI, confidence interval.