Variable | HR | 95% CI | p Value |
---|---|---|---|
Age/5 years | 1.53 | 1.50 to 1.56 | <0.001 |
Ejection fraction/5% | 0.88 | 0.86 to 0.89 | <0.001 |
Other significant disease | 2.01 | 1.79 to 2.27 | <0.001 |
Smoking | 1.58 | 1.44 to 1.73 | <0.001 |
Diabetes | 1.41 | 1.30 to 1.54 | <0.001 |
Previous CABG | 1.12 | 1.00 to 1.25 | 0.047 |
Exercise ECG* | |||
Negative exercise test | 0.69 | 0.59 to 0.81 | <0.001 |
Inconclusive result | 0.79 | 0.72 to 0.87 | <0.001 |
Ischaemic exercise response | 0.67 | 0.61 to 0.73 | <0.001 |
CCS function class 3 or 4† | 1.31 | 1.21 to 1.42 | <0.001 |
Number of diseased coronary arteries‡ | 1.19 | 1.13 to 1.26 | <0.001 |
Presence of generalised arteriosclerosis | 1.35 | 1.19 to 1.53 | <0.001 |
Gender | 1.14 | 1.06 to 1.23 | 0.001 |
Previous myocardial infarction | 1.10 | 1.02 to 1.18 | 0.014 |
Treatment strategy§ | 1.29 | 0.86 to 1.93 | 0.23 |
Interaction term strategy and number of diseased vessel | 0.84 | 0.72 to 0.97 | 0.02 |
*Included as three 0/1 indicator variables with the alternative ‘exercise test not performed’ as reference.
†Canadian function class included as a dichotomous variable: 0: class 0–2,1: class 3 or 4.
‡coded as 1, 2 and 3.
§coded as 0 for PCI and 1 for CABG.
CABG, coronary artery bypass grafting; CCS, Canadian Cardiovascular Society; PCI, percutaneous coronary intervention.