Table 1. Demographic Characteristics of Surveyed American Board of Family Medicine (ABFM) Candidates

Variable	2006 (n = 8192)	2007 (n = 9430)	2008 (n = 9597)	2009 (n = 9475)	2010 (n = 2412)	2011 (n = 2339)	Overall (n = 41,445)
Male sex^*	68.1	66.9	66.8	65.2	67.5	67.9	66.8
Age^* (mean)	47.5	47.9	48.6	49.5	51.3	51.3	48.7
<40	22.6	22.0	19.4	16.5	8.9	9.4	18.8
40–60	69.5	68.6	69.5	70.2	74.2	73.2	70.2
≥60	7.9	9.4	11.1	13.3	16.9	17.2	10.6
MD degree^*	92.8	92.6	92.2	92.1	90.1	90.0	92.2
International medical graduate^*	10.4	11.9	13.2	15.2	22.6	20.6	13.8
Type of organization^*
Administration	1.1	1.1	1.2	1.1	1.2	1.5	1.1
Educator	5.3	5.2	4.7	4.8	3.5	3.0	4.8
Government	5.8	6.3	6.9	6.7	7.3	6.9	6.6
Group	43.5	43.7	44.1	43.3	39.5	41.9	43.3
HMO	3.4	3.3	3.1	3.0	2.6	2.4	3.1
Independent (solo)	18.8	18.9	19.3	20.1	25.5	23.0	19.9
Partnership	13.2	12.7	11.7	11.3	10.3	10.2	12.0
Others	8.9	8.7	9.2	9.7	10.0	11.0	9.3
Rural^{^†}	19.6	18.4	18.9	18.4	16.2	16.9	18.5
Geographic HPSAs	7.0	6.7	6.9	7.2	7.4	7.1	7.0
MUA/P	22.3	21.0	21.2	21.6	21.6	22.7	21.6
Census region^*
Northeast	14.8	14.9	14.5	14.6	15.9	15.1	14.8
Midwest	27.2	26.8	26.6	25.9	25.5	25.9	26.5
South	33.6	33.5	34.5	34.2	35.7	37.1	34.2
West	24.3	24.8	24.4	25.4	22.8	21.9	24.5

Values are shown as percentages.
↵* P < .0001.
↵† P < .01.
HMO, health maintenance organization; HPSA, health professional shortage area; MUA/P, medically underserved area/population.