Table 3.

Cox regression analysis for the association of IVUS utilization with all-cause mortality for patients with chronic vs. acute coronary syndrome.

	IVUS utilization in Chronic Coronary Syndrome		IVUS utilization in Acute Coronary Syndrome
	Hazard ratio (95% CI)	p-value	Hazard ratio (95% CI)	p-value
Unadjusted	0.69 (0.58, 0.81)	<0.0001	0.78 (0.65, 0.94)	0.008
Model 1	0.70 (0.59, 0.82)	<0.0001	0.81 (0.67, 0.96)	0.02
Model 2	0.74 (0.62, 0.88)	0.0005	0.80 (0.67, 0.96)	0.01
Model 3	0.69 (0.54, 0.88)	0.003	0.77 (0.59, 1.00)	0.05

Model 1: Adjusted for age, sex.

Model 2: Adjusted for age, sex, low-density lipoprotein (LDL)-cholesterol, systolic blood pressure, diabetes, family history of premature coronary artery disease (CAD), smoking status, and discharge diagnosis, and experience of the interventional cardiologists.

Model 3: Adjusted for age, sex, LDL-cholesterol, systolic blood pressure, diabetes, family history of premature CAD, smoking status, statin use, aspirin use, P2Y12-inhibitors use, antihypertensive medication use, left main stenosis, discharge diagnosis, and experience of the interventional cardiologists.

CAD = coronary artery disease; CI = confidence interval; IVUS = intravascular ultrasound; LDL = low-density lipoprotein.