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Table 1 Baseline characteristics

From: Evaluation of the impact of percutaneous coronary intervention of chronic total occlusion on regional myocardial function using strain echocardiography

  PCI (n = 30) OMT (n = 30) p value
Age (years) 57 ± 5.1 58.8 ± 4.72 0.89
Male sex 18 20 0.4
Hypertension 23 25 0.73
Diabetes mellitus 20 18 0.23
Hypercholesterolemia 19 15 0.54
Smoking 20 21 0.81
Previous myocardial infarction 8 11 0.12
Angina class (CCS)    0.7
 I/II/III 2/18/10 1/16/13  
LVEF (%) 60.70 ± 8.33 59.46 ± 7.78 0.17
Collateral grade    0.2
 3/2/1/0 24/4/2/0 20/5/3/2  
Multivessel disease 8 5 0.5
SYNTAX score 19.2 ± 3.7 22.5 ± 3.5 0.07
J-CTO score 1.9 ± 0.2 2.5 ± 0.9 0.03*
  1. CCS Canadian Cardiovascular Society, LVEF left ventricular ejection fraction, SYNTAX Synergy between PCI with Taxus and Cardiac Surgery, J-score Japanese score
  2. * = there is a significant difference