Table 1.

Patient Characteristics by Readmission or Death Within 1 Year of Discharge

Patient Characteristics	Readmitted or Dead		p Value
	No (n = 642)	Yes (n = 405)
Age, years	63.91 ± 9.92	67.8 ± 9.98	<0.001
Female	20.14	28.89	<0.001
Body mass index, kg/m2	29.66 ± 5.39	29.81 ± 5.75	0.636
Body surface area, m2	2.04 ± 0.23	2.03 ± 0.26	0.534
Smoker	22.62	22.96	0.889
Atrial fibrillation	3.65	9.14	<0.001
CHF	7.69	13.86	<0.001
Last preoperative serum creatinine	1.13 ± 1.13	1.22 ± 0.84	0.115
Diabetes	36.23	40.49	0.136
Ejection fraction <40%	9.75	12.01	0.221
Hypertension	80.16	82.88	0.242
IABP preoperative	3.85	3.70	0.900
Prior MI
No	57.89	51.36	0.132
<24 hours preoperative	1.52	1.73
>24 hours and <7 days preoperative	19.13	19.26
>7 days and <365 days preoperative	9.31	12.35
>365 days preoperative	12.15	15.31
Vascular disease	22.57	35.80	<0.001
Unstable angina	55.41	55.50	0.975
COPD	10.43	16.79	0.001
Left main, ≥50% stenosis	32.39	36.05	0.189
Prior CABG surgery	1.74	2.75	0.227
Prior PCI	18.93	21.48	0.276
Priority
Emergent	2.33	1.23	0.385
Urgent	66.30	68.15
Nonurgent	31.38	30.62
Received pRBC units	31.91	45.93	<0.001
pRBC units given preoperative
0	98.99	95.80	0.001
1	0.30	0.99
2	0.51	2.22
≥3	0.20	0.99

Values are mean ± SD or %.

CABG = coronary artery bypass graft; CHF = congestive heart failure; COPD = chronic obstructive pulmonary disease; IABP = intraaortic balloon pump; MI = myocardial infarction; PCI = percutaneous coronary intervention; pRBC = packed red blood cell.