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. 2018 Oct 30;54(Suppl 1):307–316. doi: 10.1111/1475-6773.13077

Table 2.

Implied effects of the ACA at mean pretreatment uninsured rate for full sample and income and race subsamples

Any insurance Any private Employer‐sponsored Individually purchased Medicaid Other
Panel I: Full sample
Nonelderly adults aged 19‐64 (pretreatment uninsured rate = 0.203, sample size = 10 537 667)
Medicaid expansion 0.050*** (0.011) −0.009 (0.009) 0.003 (0.007) −0.010 (0.012) 0.062*** (0.008) 0.001 (0.001)
Full ACA (w/Medicaid) 0.087*** (0.005) 0.028*** (0.006) 0.017*** (0.004) 0.012*** (0.003) 0.062*** (0.007) 0.001 (0.001)
Panel II: Income subsamples
Under 138% FPL (Pretreatment Uninsured Rate = 0.395, sample size = 1 949 375)
Medicaid expansion 0.170*** (0.033) −0.031 (0.018) −0.007 (0.016) −0.024 (0.019) 0.216*** (0.036) −0.003 (0.003)
Full ACA (w/Medicaid) 0.169*** (0.029) 0.018 (0.011) 0.015 (0.009) 0.002 (0.007) 0.154*** (0.031) 0.002 (0.002)
138%‐400% FPL (Pretreatment Uninsured Rate = 0.237, sample size = 4 137 149)
Medicaid expansion 0.056*** (0.016) 0.011 (0.015) 0.023 (0.016) −0.008 (0.016) 0.047** (0.015) 0.001 (0.002)
Full ACA (w/Medicaid) 0.105*** (0.013) 0.066*** (0.014) 0.050*** (0.011) 0.019*** (0.006) 0.042** (0.013) −0.001 (0.001)
Over 400% FPL (Pretreatment Uninsured Rate = 0.067, sample size = 4 482 022)
Medicaid expansion 0.012** (0.004) 0.002 (0.006) 0.006 (0.009) −0.002 (0.007) 0.010* (0.004) −0.001 (0.002)
Full ACA (w/Medicaid) 0.028*** (0.003) 0.019*** (0.005) 0.008 (0.005) 0.010*** (0.003) 0.010* (0.004) 0.001 (0.002)
Panel III: Race/Ethnicity subsamples
Non‐Hispanic white (Pretreatment Uninsured Rate = 0.144, sample size = 7 149 482)
Medicaid expansion 0.051*** (0.006) −0.002 (0.006) 0.004 (0.008) −0.004 (0.007) 0.058*** (0.008) −0.002 (0.001)
Full ACA (w/Medicaid) 0.077*** (0.005) 0.019*** (0.005) 0.010** (0.004) 0.007* (0.003) 0.067*** (0.007) −0.003*** (0.001)
Non‐white (Pretreatment Uninsured Rate = 0.306, sample size = 3 388 185)
Medicaid expansion 0.070*** (0.020) −0.014 (0.019) 0.005 (0.009) −0.015 (0.020) 0.083*** (0.013) 0.006* (0.002)
Full ACA (w/Medicaid) 0.115*** (0.009) 0.039*** (0.009) 0.025** (0.008) 0.018** (0.006) 0.075*** (0.012) 0.004* (0.002)

Results are effects of the ACA on the proportion of residents with the specified type of insurance, evaluated at the mean pretreatment uninsured rate. Standard errors, heteroskedasticity‐robust and clustered by state, are in parentheses. *** indicates statistical significance at 0.1% level, ** at 1% level, and * at 5% level. Sampling weights are used. All regressions include area and time fixed effects and the full set of controls.