Table 1.

Baseline Characteristics According to Stent Type and Indications.^*

Variable	Standard Use			Off-Label Use
	Bare-Metal Stent (N = 1748)	Drug-Eluting Stent (N = 1381)	P Value	Bare-Metal Stent (N = 2110)	Drug-Eluting Stent (N = 1312)	P Value
Mean age (yr)	62.6	63.7	0.02	63.4	63.4	0.80
Female sex (%)	37.3	33.1	0.01	33.3	31.2	0.19
Race or ethnic group (%)†			0.009			<0.001
White	79.2	74.5		82.7	76.4
Black	11.1	15.2		8.9	15.4
Hispanic	5.7	6.3		5.2	5.7
Asian	3.8	3.4		3.1	2.3
Other	0.2	0.6		0.1	0.2
Smoking history (%)			<0.001			0.71
Never	31.7	34.2		32.1	33.3
Current	29.8	23.4		25.3	25.5
Former	38.6	42.4		42.6	41.2
Diabetes (%)	26.0	32.8	<0.001	27.1	35.4	<0.001
Hypertension (%)	64.4	78.1	<0.001	64.6	78.1	<0.001
Renal disease (%)	4.3	8.3	<0.001	5.2	9.4	<0.001
Peripheral vascular disease (%)	6.0	6.9	0.31	8.5	9.7	0.24
Cerebrovascular disease (%)	5.8	6.4	0.50	6.4	7.9	0.18
Previous PCI (%)	18.2	27.3	<0.001	27.7	39.0	<0.001
Previous CABG (%)	7.5	11.7	<0.001	22.5	24.6	0.17
Previous myocardial infarction (%)	28.8	20.9	<0.001	33.1	27.1	<0.001
Previous brachytherapy (%)‡	0.3	0.9	0.25	0.9	1.9	0.08
Congestive heart failure (%)	8.2	8.3	0.90	11.0	9.9	0.38
Mean left ventricular ejection fraction (%)	55.0	54.1	0.12	51.1	51.1	0.80
No. of diseased vessels (%)			<0.001			<0.001
0	0	0.1		0.6	0.5
1	48.0	41.3		38.1	31.9
2	33.8	32.4		31.1	30.9
3	18.1	26.1		30.2	36.7
Primary indication (%)
Acute myocardial infarction	25.4	25.3	0.98	31.5	30.2	0.42
Unstable angina	42.8	36.2	<0.001	40.8	31.7	<0.001
Stable angina	22.1	20.1	0.20	18.5	21.3	0.04
Ischemia	5.6	12.8	<0.001	5.5	12.7	<0.001
Other	4.1	5.6	0.07	3.7	4.1	0.54

^*CABG denotes coronary artery bypass grafting, and PCI percutaneous coronary intervention.

^†Race and ethnic group were self-reported.

^‡Data were not available for waves 1 and 2.