Table 5.

Relative risks of adverse outcomes and change in total payment by procedure type, at hospitals participating in Keystone Surgery, vs non-participating controls (CI: confidence interval)

Procedure:	Relative Risk of Adverse Outcome (95% CI)					Change in Total payment (95% CI)
	Mortality	Complications	Serious complications	Reoperations	Readmissions	Change in Total payment (95% CI)
Esophagectomy	1.02 (0.65, 1.4)	1.15 (0.98, 1.31)	1.07 (0.45, 1.69)	0.7 (0.2, 2.48)	0.81 (0.41, 1.21)	$203 ($-5,933, $6,338)
Pancreatic resection	1.24 (0.84, 1.65)	0.83 (0.54, 1.13)	0.78 (0.29, 1.28)	0.61 (0.12, 3.04)	1.09 (0.88, 1.3)	$-1447 ($-4,237, $1,344)
Colon resection	1 (0.9, 1.1)	1.04 (0.99, 1.09)	1.05 (0.97, 1.12)	1.1 (0.81, 1.49)	0.96 (0.89, 1.02)	557 ($-68, $1,182)
Gastrectomy	1.13 (0.9, 1.1)	1.09 (0.98, 1.2)	1.11 (0.83, 1.38)	0.58 (0.22, 1.51)	0.88 (0.64, 1.11)	$212 ($-1,926, $2,350)
Liver resection	0.81 (0.07, 1.56)	1.03 (0.6, 1.46)	1.15 (0.77, 1.53)	0.73 (0.04, 12.47)	1.11 (0.87, 1.35)	$1333 ($-1,797, $4,463)
Incisional hernia repair	1.08 (0.92, 1.24)	1.07 (1.00, 1.15)	1.12 (1.02, 1.21)	1 (0.59, 1.7)	1.03 (0.94, 1.12)	$599 ($23, $1,175)
Cholecystectomy	0.91 (0.74, 1.07)	0.98 (0.93, 1.02)	1 (0.93, 1.08)	0.57 (0.33, 0.98)	1.03 (0.98, 1.09)	$346 ($-29, $720)
Appendectomy	1.31 (1.09, 1.53)	0.98 (0.89, 1.08)	1.02 (0.89, 1.14)	0.89 (0.4, 1.98)	0.97 (0.8, 1.14)	$916 ($162, $1,669)
Abdominal aortic aneurysm repair	1.26 (1.00, 1.52)	1.02 (0.89, 1.15)	0.97 (0.77, 1.16)	1.19 (0.48, 2.97)	0.99 (0.84, 1.13)	$347 ($-437, $1,130)
Lower extremity bypass	1.03 (0.80, 1.26)	1.06 (0.96, 1.16)	1.16 (1.02, 1.31)	0.91 (0.31, 2.67)	1.02 (0.93, 1.11)	$689 ($153, $1,225)
Carotid endarterectomy	1.03 (0.74, 1.32)	1.07 (0.92, 1.21)	1.1 (0.96, 1.25)	^*	1.09 (0.98, 1.20)	$177 ($-59, $412)

Insufficient sample size to run regression model for this outcome measure