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. 2023 Feb 27;30(1):44–50. doi: 10.5603/CJ.a2021.0012

Table 1.

Baseline characteristics.

Initial attempt (n = 366) Re-attempt (n = 253) P
Age [years]* 62 (37–86) 61 (33–87) 0.114
Hypertension 81.4% (298) 81.4% (206) 1
Diabetes 27.3% (100) 24.1% (61) 0.402
Male gender 83.6% (306) 80.6% (204) 0.391
Smoking 44.8% (164) 47.8% (121) 0.462
COPD 11.7% (43) 7.1% (18) 0.074
Body mass index* 27.5 (18.0–46.7) 27.4 (17.0–45.0) 0.604
Total cholesterol > 200 mg/dL 21.2% (49) 17.9% (35) 0.464
LDL cholesterol > 100 mg/dL 48.5% (112) 47.7% (93) 0.923
HDL cholesterol > 40 mg/dL 68.0% (157) 67.7% (132) 1
Triglycerides > 150 mg/dL 45.9% (106) 48.2% (94) 0.697
Peripheral artery disease 12.0% (44) 12.3% (31) 1
Family liability for CAD 28.1% (103) 26.1% (66) 0.583
Prior MI 30.9% (113) 37.5% (95) 0.100
Prior CABG 9.6% (35) 9.1% (23) 0.889
Prior PCI 47.3% (238) 43.5% (32) 0.367
Ejection fraction ≥ 40% 94.0% (505) 97.2% (66) 0.080
Multivessel disease 79.0% (289) 67.9% (172) 0.003
CTO location: 0.003
 LAD 32.5% (119) 20.6% (52)
 LCX 10.9% (40) 14.2% (36)
 RCA 54.9% (201) 65.2% (165)
*

Median (min–max);

CABG — coronary artery bypass grafting; CAD — coronary artery disease; COPD — chronic obstructive pulmonary disease; CTO — chronic total occlusion; HDL — high density lipoprotein; LAD — left anterior descending; LDL — low density lipoprotein; LCX — left circumflex; MI — myocardial infarction; PCI — percutaneous coronary intervention; RCA — right coronary artery