Baseline characteristics of the patients in both the model development (2004–2007) and validation (2008–2009) cohort
| Clinical characteristic | Model development cohort 2005–2007 (N=52 462) | Validation cohort 2008–2009 (N=42 310) |
|---|---|---|
| Age, mean (IQR) (year) | 64 (52–76) | 65 (53–77) |
| Female sex (%) | 34 | 34 |
| Present smoker (%) | 27 | 26 |
| Hypertension (%) | 83 | 86 |
| Diabetes IDDM (%) | 12 | 14 |
| Diabetes, NIDDM (%) | 23 | 24 |
| Renal failure (%) | 2 | 2 |
| Peripheral vascular disease (%) | 17 | 18 |
| Significant valve disease (%) | 4 | 4 |
| Prior CVA or TIA (%) | 14 | 16 |
| Prior MI (%) | 35 | 37 |
| Prior PCI (%) | 43 | 48 |
| Stable angina (%) | 23 | 27 |
| Unstable angina (%) | 42 | 31 |
| LVEF, mean (IQR, %) | 52 (40–63) | 51 (39–63) |
CVA, cerebrovascular accident; IDDM, insulin-dependent diabetes mellitus; LVEF, left ventricular ejection fraction; MI, myocardial infarction; NIDDM, non-insulin-dependent diabetes mellitus; PCI, percutaneous coronary intervention; TIA, transient ischaemic attack.