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Table 2 Diff-in-Diff estimation of Medicaid effects on major outcome variables controlling all covariates

From: Inpatient rehabilitation service utilization and outcomes under US ACA Medicaid expansion

  FIM Admission LOS FIM GAIN FIM Gain/day ReturnToCommunity
Stroke
 Post (Year = 2016) 0.21 (0.39) −1.08 (0.42)** 4.45 (0.61)*** 0.41 (0.07)*** 0.04 (0.02)***
 Expansion (=1) 0.31 (0.31) −0.45 (0.33) −0.03 (0.48) 0.03 (0.05) −0.08 (0.01)***
 Post * Expansion −0.31 (0.42) 0.67 (0.45) −1.63 (0.66)** − 0.21 (0.07)*** − 0.02 (0.02)
 Medicare Advantage (=1) 0.01 (0.18) −1.69 (0.19)*** − 0.98 (0.28)*** − 0.04 (0.03) − 0.01 (0.01)
 No. Obs. 11,619 11,619 11,619 11,619 11,619
Fracture
 Post (Year = 2016) −1.30 (0.87) −0.73 (0.52) 5.98 (1.18)*** 0.53 (0.16)*** 0.03 (0.03)
 Expansion (=1) 2.29 (0.75)*** 0.21 (0.45) 3.15 (1.02)*** 0.27 (0.13)** −0.06 (0.03)**
 Post * Expansion −0.97 (1.03) 0.18 (0.61) −3.61 (1.40)** −0.23 (0.18) 0.01 (0.04)
 Medicare Advantage (=1) 1.11 (0.52)** − 0.27 (0.31) −0.64 (0.71) − 0.04 (0.09) − 0.03 (0.02)
 No. Obs. 1270 1270 1270 1270 1270
Joint Replacement
 Post (Year = 2016) −1.37 (0.58)** − 0.19 (0.30) 4.28 (0.81)*** 0.49 (0.12)*** −0.01 (0.02)
 Expansion (=1) 0.05 (0.45) 0.69 (0.23)*** 0.99 (0.63) 0.10 (0.09) −0.04 (0.02)**
 Post * Expansion 1.34 (0.68)** −0.03 (0.35) −2.73 (0.94)*** −0.44 (0.14)*** − 0.001 (0.02)
 Medicare Advantage (=1) 0.88 (0.34)** −0.57 (0.17)*** 0.48 (0.47) 0.06 (0.07) 0.01 (0.01)
 No. Obs. 2028 2028 2028 2028 2028
Control for …
 FIM Admission ~ Y Y Y Y
 LOS ~ ~ Y Y Y
 CMG Y Y Y Y Y
 Tier Y Y Y Y Y
 Demographics Y Y Y Y Y
 Facility Type Y Y Y Y Y
  1. * 90%, ** 95%, *** 99% significant level
  2. - Entries are estimated beta coefficients with standard error in parentheses