Table 1. Baseline characteristics of the total CTO cohort in SCAAR at the time of diagnosis based on data collected during the period 2005–2012.
| All CTO patients (n = 16,818) | Missing % | |
| Male (%) | 77.5 | 0.0 |
| Age (median, IQR) | 68 (60–76) | 0.2 |
| Diabetes (%) | 23.9 | 1.0 |
| Hypertension (%) | 61.9 | 2.5 |
| Hyperlipidemia (%) | 62.7 | 2.9 |
| Smoking status (%) | 6.2 | |
| Current smoker | 19.9 | |
| Previous smoker | 40.2 | |
| Previous MI (%) | 37.2 | 3.8 |
| Previous PCI (%) | 18.4 | 0.1 |
| Cardiogenic shock (%)* | 10.2 | 1.2 |
| Creatinine Clearance (ml/min) | 81 (61–104) | 28.2 |
| CCS class (%)** | 7.0 | |
| I | 9.0 | |
| II | 52.2 | |
| III | 37.4 | |
| IV | 1.4 | |
| Indication (%) | 0.0 | |
| Stable CAD | 45.5 | |
| Unstable CAD/NSTEMI | 27.5 | |
| STEMI | 14.3 | |
| Other | 12.7 | |
| Extent of CAD (%) | 1.1 | |
| 1 vessel | 20.4 | |
| 2 vessel | 35.1 | |
| 3 vessel | 36.1 | |
| Left main disease*** | 8.4 |
CAD: coronary artery disease, CCS: Canadian cardiovascular society, CTO: chronic total occlusion, IQR: inter quartile range, MI: myocardial infarction, (N)STEMI: (non-)ST-elevation myocardial infarction, PCI: percutaneous coronary intervention.
* Cardiogenic shock only displayed for the indication STEMI.
**CCS class only displayed for the indication stable CAD.
*** Left main (LM) disease includes: LM+1 vessel, LM+2 vessel and LM+3 vessel.