Variable	Parameter	Posterior Mean (95% CrI)
Intercept  Study Period  Study Group  Period x Group  Education (0 = < HS, 1= > HS)  Race (0=white, 1=other)	β1 β2 β3 β4 β6	-0.94 (-1.31, -0.55) -0.18 (-0.61, 0.24) -0.15 (-0.64, 0.28) 0.89 (0.36, 1.47)* 5 -0.26 (-0.44, -0.06) 0.14 (-0.07, 0.34)
Random Intercept Variance Random Slope Variance Covariance	Σ11 Σ22 Σ12	0.93 (0.52, 1.52) 0.50 (0.19, 0.44) 0.06 (-0.34, 0.41)
* Pr(β4> 0\y; y0) = 1:0.
Table 2: Posterior estimates for power prior model with a0 = 1.