Table 5.

Georgia: Multivariate Analysis of the Impact of Public Insurance Enrollment on Physician Medicaid Participation over Time

	Rural Communities N = 2,255			Urban Communities N =1,180
	Participation Rate	Avg. MC Visit Volume	Number Limited Offices	Participation Rate	Avg. MC Visit Volume	Number Limited Offices
% S-CHIP of all children in market	−0.040	0.005	0.021	−0.342****	−0.618****	−0.124
	(0.033)	(0.044)	(0.052)	(0.078)	(0.125)	(0.124)
Fee ratio in low AA markets	−4.134	−2.770	8.162	−0.984	−2.153	5.750
	(6.613)	(8.964)	(10.487)	(9.641)	(15.503)	(15.393)
Difference in fee ratio in high AA markets	−0.429	1.658	−3.980	−6.915*	−10.634*	−3.088
	(2.592)	(3.514)	(4.111)	(3.650)	(5.869)	(5.828)
			−3.087
			(5.828)
High AA community	0.159	−1.511	2.481	4.477**	6.636*	1.023
	(1.591)	(2.156)	(2.522)	(2.213)	(3.558)	(3.533)
% Medicaid of all children in market	0.023**	0.015	−0.011	−0.030	−0.057*	−0.028
	(0.009)	(0.013)	(0.015)	(0.021)	(0.034)	(0.034)
Median household income	−1.25e-5	−1.32e-5	1.380e5	3.71e-6	2.11e-5	5.640e5
	(2.26e-5)	(3.07e-5)	(3.590e5)	(2.56e-5)	(4.11e-5)	(3.590e5)
Primary care office MD per capita	−19.18e-4***	2.85e-4	0.001	−3.69e-5*	8.11e-6	3.70e7
	(5.73e-4)	(7.77e-4)	(0.001)	(2.21e-5)	(3.55e-5)	(3.53e5)
HMO penetration	0.102	0.140	0.066	−0.014**	−0.016*	−0.019**
	(0.094)	(0.127)	(0.149)	(0.006)	(0.009)	(0.009)
Clinic in community	−0.104	−0.224	−0.134	−0.271	−0.765	−0.027
	(0.408)	(0.553)	(0.648)	(0.937)	(1.506)	(1.496)

^*p<.10;

^**p<.05;

^***p<.01;

^****p<.001.