Table 6.

Percent of Population Residing in a Potential HPSA^*

Rural–Urban Continuum Code
Travel Assumptions	0	1	2	3	4	5	6	7	8	9
Consumers can only access PCPs in own county	0.3	12.0	4.0	2.4	0.0	0.0	9.3	3.8	44.6	29.8
Consumers choose closest PCP	21.7	52.8	30.9	28.2	29.3	16.2	28.3	13.2	52.0	29.7
Probability declines exponentially with distance: average distance=5 miles	0.0	3.9	1.7	1.4	1.7	4.1	8.7	5.5	30.0	19.0
Probability declines exponentially with distance: average distance=10 miles	0.0	0.1	0.0	0.4	0.0	0.0	1.0	1.9	11.1	7.3

^*A potential HPSA is defined here as an average primary care caseload greater than 3,500 patients.

Source: Authors' calculations using data from the AMA Masterfile and U.S. Census data. See note to Table 2 for states included.

AMA, American Medical Association; HPSA, health professional shortage area; PCP, primary care physician.