Table 3.

Association between surgical team-related predictor variables and outcome variable

Variable	Coefficient	Standard error	t-statistic	p value
Presence of junior resident	26.94	10.64	2.53	0.01
Presence of senior resident	− 4.65	7.27	− 0.64	0.52
Presence of fellow	7.31	5.69	1.29	0.20
Presence of physician assistant	8.76	11.06	0.79	0.43
R-squared	0.0038
Adjusted R-squared	0.0020

The presence of a junior resident was significantly associated with the outcome variable of case length differential (actual minus scheduled operating room time) by linear regression