Baseline characteristics of CTO patients from coronary segment subcohort according to the treatment strategy.

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.Data about initial treatment strategy were missing in four CTO patients.