Table 1.

Baseline characteristics of ssBITA and Non-ssBITA comparison groups.

Patient Factor	ssBITA	Non-ssBITA	p
	(n=4,841)	(n=6,428)
Age (mean(SD),years)	61.2±10.0	61.9±10.4	0.070
Male	86.1%	85.4%	0.234
Obese	40.6%	38.7%	0.037
Diabetes Mellitus	38.1%	34.6%	0.001
Hypertension	85.9%	85.2%	0.635
Dyslipidemia	92.6%	91.0%	0.010
Systolic Heart Failure	45.8%%	38.9%	0.014
3ple Vessel Disease	83.2%	81.1%	0.021
Cerebrovascular Disease	16.4%	15.9%	0.010
Chronic Lung Disease (>mild)	5.3%	6.1%	0.002
Hemoglobin A1c > 6%	45.8%	43.0%	0.005
Off Pump	16.3%	11.6%	< 0.001
Intra-op PRBC Transfusion	18.9%	21.7%	< 0.001
Post-op PRBC Transfusion	23.2%	27.3%	< 0.001
OR Time (mean(SD), minutes)	387±96	364±94	< 0.001
X-Clamp Time (mean(SD), minutes)	82.0±33.0	77.8±33.5	<0.001
CPB Time (mean(SD), minutes)	105.8±41.6	105.0±42.6	NS
BITA cases/hospital (mean(SD))	13.7±25.3	9.1±14.5	<0.001
BITA cases/surgeon (mean(SD))	9.2±15.2	5.1±8.4	<0.001