Table 1.

Respondent Characteristics

Characteristics	%
Male	74.3
Physician	99.1
Clinical specialty
Pulmonary/critical care/sleep	90.5
Primary care/internal medicine	7.5
Cardiothoracic surgery	0.9
Radiology	0.6
Outpatient versus inpatient effort
Exclusively outpatient	6.0
Mostly outpatient	49.2
Mostly inpatient	44.8
Practice type
Academic	62.2
Community/health maintenance organization/other	30.0
Department of Veteran Affairs	7.8
Practice setting
Urban	69.5
Suburban	24.8
Rural	5.7
Practice location
Northeast	37.8
South	15.3
Midwest	27.8
West	19.1