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

<p>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.</p><p>* Cardiogenic shock only displayed for the indication STEMI.</p><p>**CCS class only displayed for the indication stable CAD.</p><p>*** Left main (LM) disease includes: LM+1 vessel, LM+2 vessel and LM+3 vessel.</p><p>Data about initial treatment strategy were missing in four CTO patients.