Table 2.

Regression Results

	Propensity Score Weighting, Selected ZCTAs		No Propensity Score Weighting, All ZCTAs
	PCP, Arc Percent Change	PCP, Percentage Point Change, At Least 1 Visit	PCP, Arc Percent Change	PCP, Percentage Point Change, At Least 1 Visit
Constant	−0.046 (0.010)**	0.003 (0.002)	−0.050 (0.011)**	0.001 (0.003)
Uninsurance tercile 2	0.011 (0.011)	0.001 (0.003)	0.012 (0.012)	0.004 (0.003)
Uninsurance tercile 3	0.028 (0.012)*	0.005 (0.003)+	0.026 (0.011)*	0.005 (0.003)+
Massachusetts	0.067 (0.012)**	0.017 (0.004)**	0.070 (0.013)**	0.019 (0.004)**
Massachusetts*Uninsurance tercile 2	−0.017 (0.017)	−0.003 (0.006)	−0.007 (0.017)	−0.004 (0.006)
Massachusetts*Uninsurance tercile 3	−0.069 (0.017)**	−0.007 (0.005)	−0.064 (0.015)**	−0.007 (0.005)
N	1,437	1,437	4,547	4,547

Note. **p < .01, *p < .05, +p < .1.

The uninsurance tercile 2 represents ZCTAs with the medium levels of uninsurance in 2005, whereas the uninsurance tercile 3 represents the ZCTAs with the highest level of uninsurance in 2005. All regressions were clustered at the PCSA level and used robust standard errors. “Selected ZCTAs” are those that have a predicted probability of being in Massachusetts between 0.1 and 0.9.

Source. Authors' calculations.