(b).

Variables	Group A Nonsignificant stenosis	Group B Significant stenosis	P value
CAD risk factors (N, %)	N = 91 (40%)	N = 136 (60%)
Gender
Male	68.0 (74.7%)	110.0 (80.9%)	0.269
Female	23.0 (25.3%)	26.0 (19.1%)
Obesity	45.0 (49.5%)	71.0 (52.2%)	0.736
Hypertension (yes)	54.0 (59.3%)	84.0 (61.7%)	0.842
DM (yes)	40.0 (43.8%)	65.0 (62.5%)	0.008
Dyslipidemia (yes)	28.0 (33.73%)	41.0 (32.80%)	0.885
Smoking (yes)	30.0 (32.9%)	63.0 (46.3%)	0.062
FH of CAD (yes)	22.0 (24.1%)	40.0 (29.4%)	0.465
Use antidiabetic treatment	26.0 (28.6%)	40.0 (38.1%)	0.151
Use statin treatment	25.0 (34.2%)	38.0 (36.2%)	0.224

Categorical variables were presented as number and percent. DM: type 2 diabetes, FH of CAD: family history of coronary artery diseases. Two-tailed P value is significant at <0.05.