Table 8 Relationship of major potential prognostic variables with non‐fatal acute myocardial infarction at six‐month follow up (univariate Cox regression).
| RR (95% CI) | p Value | |
|---|---|---|
| Age >70 years | 0.80 (0.32 to 2.0) | 0.64 |
| Men | 1.33 (0.22 to 4.0) | 0.42 |
| Active smoking | 2.49 (1.06 to 5.76) | 0.033 |
| Hypertension | 1.13 (0.49 to 2.61) | 0.78 |
| Family history of CAD | 1.15 (0.49 to 2.69) | 0.75 |
| Hypercholesterolaemia | 1.14 (0.47 to 2.76) | 0.77 |
| Diabetes mellitus | 1.40 (0.50 to 3.91) | 0.52 |
| Previous AMI | 0.96 (0.38 to 2.45) | 0.94 |
| No de novo unstable angina | 0.74 (0.32 to 1.71) | 0.48 |
| Angina >20 min | 0.92 (0.39 to 2.15) | 0.85 |
| β blocking agents | 1.02 (0.43 to 2.40) | 0.97 |
| Calcium antagonists | 0.62 (0.27 to 1.42) | 0.26 |
| ACE inhibitors | 0.79 (0.34 to 1.67) | 0.79 |
| Basal ST changes | 0.52 (0.12 to 2.22) | 0.38 |
| Troponin I >0.4 ng/ml | 2.17 (0.94 to 5.0) | 0.069 |
| C reactive protein >3 mg/l | 2.20 (0.82 to 5.92) | 0.12 |
| TMI on Holter monitoring | 1.66 (0.71 to 3.9) | 0.24 |
| ⩾10 extrasystoles/h | 0.42 (0.10 to 1.78) | 0.24 |
| Complex VA | 0.71 (0.28 to 1.80) | 0.47 |
| LF amplitude <15.7 ms | 0.64 (0.22 to 1.88 | 0.42 |
| HF amplitude <11.2 ms | 0.28 (0.07 to 1.19) | 0.086 |
| LF:HF ratio <1.12 | 0.91 (0.34 to 2.45) | 0.85 |
ACE, angiotensin converting enzyme; AMI, acute myocardial infarction; CAD, coronary artery disease; HF, high frequency; LF, low frequency; RR, relative risk; TMI, transient myocardial ischaemia; VA, ventricular arrhythmias.