Table 1.

Participating Sites.

Institution	Region	Surgeons (n)	Surveys (n)
University of Arkansas for Medical Sciences	Midwest	2	53
University of Florida	South	5	52
University of Iowa Hospitals and Clinics	Midwest	4	58
University of Maryland	Northeast	5	9
Hospital for Joint Diseases, New York University	Northeast	21	43
Rothman Institute	Northeast	45	144
		82	359

One survey was completed from a seventh institution and was counted in the frequency but not in the analysis