Table 1. Individual characteristics of participants (n=49).

Characteristic index	Value
Gender (male)	26 (53.1%)
Age, years	62.5±8.2
Body mass index (kg/m2)	26.7±3.2
Typical angina pectoris	30 (61.2%)
Atypical angina pectoris	19 (38.8%)
Hypertension	32 (65.3%)
Hyperlipidemia	19 (38.8%)
Diabetes	6 (12.2%)
Smoking history	14 (28.6%)
Family history	15 (30.6%)
Negative (stenosis <50%) on CAG	16 (32.7%)
Single vessel disease (stenosis ≥50%)	13 (26.5%)
Double vessel disease (stenosis ≥50%)	8 (16.3%)
Three-vessel disease (stenosis ≥50%)	12 (24.5%)
Mild lesion (stenosis ≥50%, but <75%)	11 (22.4%)
Moderate to severe lesions (stenosis ≥75%)	22 (44.9%)