Multivariate stepwise Cox regression analysis of potential risk variables in order to detect independent predictors of cardiac death or AMI
| Model I | Model II | |||
|---|---|---|---|---|
| Hazard ratio (95% CI) | p Value | Hazard ratio (95% CI) | p Value | |
| Baseline variables of potential significance were evaluated (model I). Once variables in model I were accounted for, the added value of the information from troponin T testing and ST segment monitoring was explored (model II). All variables retained in the final models are shown. | ||||
| CI, confidence interval; NA, not applicable. | ||||
| Age ⩾ 65 years | 1.06 (1.02 to 1.10) | 0.005 | 1.05 (1.01 to 1.09) | 0.01 |
| Previous MI | 2.31 (1.13 to 4.73) | 0.02 | 2.32 (1.10 to 4.86) | 0.03 |
| Previous revascularisation | 0.27 (0.08 to 0.94) | 0.04 | 0.37 (0.11 to 1.32) | 0.13 |
| Congestive heart failure | 2.20 (1.04 to 4.67) | 0.04 | 2.18 (1.00 to 4.75) | 0.06 |
| Admission use of β blockers | 1.82 (0.92 to 3.59) | 0.09 | 1.63 (0.84 to 3.22) | 0.19 |
| Troponin T ⩾0.10 μg/l | NA | NA | 2.90 (1.40 to 6.00) | 0.004 |
| ST-VM ⩾1 episodes | NA | NA | 1.64 (0.84 to 3.22) | 0.14 |