Table VIII.

Impact of preferred core staff on total hip arthroplasty incision, procedure, and room times.

Variable	Change in mean incision time	p-value*	Change in mean procedure time	p-value*	Change in mean room time	p-value*
Preferred resident present	4.6	0.602	9.7	0.342	−0.4	0.972
Preferred circulating nurse present	6.5	0.312	0.2	0.983	−1.6	0.832
Preferred scrub nurse present	6.9	0.295	−0.1	0.985	−1.9	0.805
Preferred anaesthesiologist present	5.6	0.472	10.8	0.225	−1.0	0.912

^*Mann-Whitney U test.