| 2YM | ||||||
| Variable | Univariable Cox regression | Multivariable Cox regression | ||||
| HR (95% CI) | Wald | P values | HR (95% CI) | Wald | P values | |
| GRACE score | 1.03 (1.02 to 1.03) | 113.9 | <0.001 | 1.02 (1.02 to 1.03) | 53.8 | <0.001 |
| Female | 1.80 (1.23 to 2.6) | 9.1 | 0.02 | 0.86 (0.70 to 1.04) | 2.4 | 0.123 |
| NRR (breaths/min) | 1.35 (1.24 to 1.47) | 50.0 | <0.001 | 1.15 (1.05 to 1.26) | 9.9 | 0.002 |
| LVEF (%) | 0.94 (0.93 to 0.96) | 50.7 | <0.001 | 0.97 (0.95 to 0.98) | 13.6 | <0.001 |
| Diabetes mellitus | 0.48 (0.33 to 0.71) | 14.21 | <0.001 | 0.62 (0.43 to 0.91) | 6.0 | 0.014 |
GRACE, Global Registry of Acute Coronary Events; IHM, intrahospital mortality; LVEF, left ventricular ejection fraction; NNR, nocturnal respiration rate; 2YM, 2-year mortality.