Table 2.
Outcome | Unadjusted pre-ACA prevalence | Unadjusted post-ACA prevalence | Unadjusted difference in differences | P value | Adjusted difference in differences* | P value |
---|---|---|---|---|---|---|
Self-reported general health | ||||||
Medicaid expansion | 3.48 | 3.49 | 0.02 (−0.04, 0.08) |
0.54 | 0.05 (−0.02, 0.12) |
0.16 |
Non-Medicaid expansion | 3.45 | 3.43 | ||||
Total days in poor health (days per month) | ||||||
Medicaid expansion | 7.6 | 7.4 | −0.08 (−0.71, 0.55) |
0.80 | −0.04 (−0.74, 0.66) |
0.91 |
Non-Medicaid expansion | 7.2 | 7.1 | ||||
Days limited by poor health (days per month) | ||||||
Medicaid expansion | 2.9 | 2.8 | −0.10 (−0.53, 0.33) |
0.63 | −0.13 (−0.52, 0.25) |
0.49 |
Non-Medicaid expansion | 2.7 | 2.7 | ||||
Poor physical health (days per month) | ||||||
Medicaid expansion | 3.4 | 3.6 | 0.06 (−0.37, 0.49) |
0.79 | 0.08 (−0.41, 0.57) |
0.74 |
Non-Medicaid expansion | 3.4 | 3.5 | ||||
Poor mental health (days per month) | ||||||
Medicaid expansion | 5.3 | 5.1 | −0.23 (−0.69, 0.23) |
0.33 | −0.23 (−0.74, 0.28) |
0.38 |
Non-Medicaid expansion | 4.9 | 5.0 | ||||
Disabled (%) | ||||||
Medicaid expansion | 18.7 | 18.9 | 0.31 (−1.5, 2.1) |
0.73 | −0.25 (−2.3, 1.8) |
0.81 |
Non-Medicaid expansion | 18.6 | 18.6 | ||||
Depression (%) | ||||||
Medicaid expansion | 17.8 | 18.2 | −1.6 (−4.1, 0.84) |
0.19 | −1.5 (−4.0, 1.1) |
0.25 |
Non-Medicaid expansion | 17.6 | 19.7 |
*Adjusted analyses account for state and quarter-year fixed effects, age, sex, race/ethnicity, education, marital status, and annual state unemployment rate
Note: A negative coefficient (i.e., unadjusted and adjusted difference-in-differences estimates) indicates a decrease in states that expanded Medicaid relative to states that did not expand Medicaid, whereas a positive coefficient indicates a relative increase in Medicaid expansion states