Table 2.

Risk-adjusted composite and individual outcomes stratified by low-value (high spending and high complication rate) and high-value (low spending and low complication rate) hospitals.

	Overall	Low-value	High-value	P-value
Hospitals, n	33	8	15
Total patients, n	2573	587	1027
Risk-adjusted composite major morbidity and mortality, %	11.0	21.0	6.6	<0.001
Prolonged length of hospital stay (>14 days)	4.4	9.3	2.4	0.006
Deep sternal wound infection	0.2	0.1	0.2	0.63
Postoperative renal failure	1.5	2.2	1.0	0.16
Prolonged intubation/ventilation	8.5	17.6	4.8	<0.001
Stroke/cerebrovascular accident	1.3	1.1	1.7	0.88
Operative Mortality	1.8	4.8	0.6	<0.001
Surgical re-exploration	2.5	4.5	1.3	0.26
30-day risk-adjusted readmission rate	11.3	11.7	10.8	0.25