Table 2.

A comparison of the individual characteristics of the physician sample and the three other samples

	Physicians	General ALP	ALP elites	Medical students
Female	0.387	0.584	0.549	0.455
Age, y
≤39	0.299	0.294	0.637	0.998
40–49	0.327	0.189	0.154	0.002
50–59	0.218	0.264	0.132	0
≥60	0.155	0.253	0.077	0
Region
Northeast	0.408	0.177	0.293	0.131
Midwest	0.239	0.202	0.207	0.235
South	0.169	0.354	0.281	0.479
West	0.183	0.267	0.220	0.155
Observations	284	993	82	503

Fraction of subjects. Regions according to the US Census Bureau census regions: Northeast (census region I), Midwest (census region II), South (census region III), and West (census region IV).