Table 3.

Adjusted odds ratios of receiving major cancer surgery at high-volume hospital associated with level of comorbidity (Nationwide Inpatient Sample 1998–2010)

Comorbidity count (ref = 0)	Esophageal (n = 8,655)	Distal gastric (n = 27,018)	Total gastric (n = 13,855)	Liver (n = 7,851)	Pancreatic (n = 27,422)	Rectal (n = 84,133)
	Odds ratio (95% CI)
1	.83 (.73,.96)	1.06 (.95,1.18)	.90 (.81,1.01)	.87 (.73,1.03)	.94 (.88,1.01)	.93 (.89,.98)
2	.81 (.67,.97)	1.03 (.91,1.16)	.81 (.71,.93)	.87 (.70,1.07)	.82 (.74,.91)	.87 (.82,.93)
3+	.67 (.50,.91)	.95 (.83,1.09)	.68 (.57,.83)	.79 (.59,1.05)	.69 (.59,.82)	.81 (.74,.89)

CI = confidence interval.