Table 1.

Baseline Characteristics of the Study Cohort (Propensity Quintiles I, II, and III)

Variable	Medicine N = 327	CABG N = 131	All N = 458	Treatment Comparison P-value
Age in years, median (25, 75%ile)	63.5 (56, 71)	65.2 (57, 72)	64.1 (56.3, 71.1)	0.527
Male	73.7	78.6	75.1	0.271
Caucasian (%)	64.2	66.2	64.7	0.187
Ejection fraction, median (25, 75%ile)	0.27 (0.22, 0.31)	0.28 (0.24, 0.32)	0.27 (0.22, 0.31)	0.068
CHF history (%)				0.800
No CHF	32	34	33
Class I	6	6	6
Class II	14	13	14
Class III	26	22	25
Class IV	21	25	22
Diabetes mellitus (%)
Total	34	34	34	0.942
Type I (% of total)	5	14	8	0.084
Type II (% of total)	95	86	92	0.084
Mitral insufficiency (%)
0	48	44	47	0. 837
1+	18	18	18
2+	19	19	19
3+	10	13	11
4+	5	7	6
Number of diseased vessels				<0.001
0-vessel disease (%)	0	0	0
1-vessel disease (%)	30	12	25
2-vessel disease (%)	30	24	28
3-vessel disease (%)	40	64	47
BMI, median (25, 75)	26 (24,31)	27 (24,31)	26 (24, 31)	0.948
Renal disease (%)	3.7	3.1	3.5	0.745
History of MI (%)	40	34	38	0.256
History of smoking (%)	61	66	62	0.339
History of CABG (%)	36	4	7	<0.001
History of PCI (%)	22	17	18	0.206
Duke CAD Severity Index
Low	30	11	24	<0.001
Intermediate	33	29	32
High	38	60	44
History of peripheral vascular disease (%)	11	10	11	0.806
History of cerebrovascular disease (%)	11	10	11	0.806

BMI = body mass index; CABG = coronary artery bypass grafting; CHF = congestive heart failure; PCI = percutaneous coronary intervention.