TABLE 2.

Adjusted Mean Number of Days Alive and at Home at 30- and 90-Days and 1 Year of Index Surgery, by Surgeon Sex

Time Period	Male Surgeon (N = 1,014,657)	Female Surgeon (N = 151,054)	Male versus Female Surgeon aRR (95% CI)	P value
At 30 days	22.7 (22.2–23.2)	23.2 (22.7–23.6)	0.98 (0.97–0.99)	<0.001
At 90 days	78.8 (77.8–79.8)	79.9 (79.0–80.9)	0.99 (0.98–0.99)	<0.001
At 1 year	339.4 (335.9–343.0)	343.2 (339.5–347.1)	0.99 (0.98–1.00)	<0.001

Data presented as mean or aRR with 95% CI.

Using GEE modeling dealing with clustering based on procedure fee code (negative binomial regression with log link), adjusted for surgeon age, surgeon specialty, surgeon annual case volume, surgeon years of practice, anesthesiologist age, anesthesiologist sex, anesthesiologist annual case volume, anesthesiologist years of practice, patient age, patient sex, patient comorbidity, rurality, income quintile, LHIN, hospital status, and year of index surgery.

aRR indicates adjusted risk ratio; CI, confidence interval.