Table 3. Association between adjusted volume predictors and the outcomes 30-day mortality, 90-day mortality and anastomotic leakage.

	30-day mortality		90-day mortality		Anastomotic leakage
	OR	95%CI	OR	95%CI	OR	95%CI
Surgeon volume*
Adjusted for case-mix	1.03	0.84–1.25	1.01	0.87–1.16	0.88	0.78–1.00
Adjusted for case-mix and hospital volume	0.92	0.76–1.12	0.97	0.85–1.11	0.81	0.72–0.92
Hospital volume*
Adjusted for case-mix	0.94	0.91–0.98	0.98	0.96–1.00	0.95	0.93–0.97
Adjusted for case-mix and surgeon volume	0.94	0.91–0.98	0.98	0.96–1.01	0.96	0.93–0.98

* ORs represent the effect of 5 extra patients per year