183 Antidepressant therapy prescription, do psychologists help? Evidence from Portugal Table A3. Comparison of within between random effects model with unbalanced (main) and balanced model No controls Year dummies GP GP practice Main specification Unbalanced (1) Balanced (2) Unbalanced (3) Balanced (4) Unabalanced (5) Balanced (6) Unbalanced (7) Balanced (8) Unbalanced (9) Balanced (10) Psychologists/100,000 patients Within-term -0.943*** -0.996*** -0.268 -0.305 -0.263 -0.275 -0.270 -0.280 -0.305 -0.327 [-1.334, -0.551] [-1.455, -0.536] [-0.737, 0.202] [-0.837, 0.227] [-0.688,0.161] [-0.756, 0.205] [-0.688,0.148] [-0.752, 0.192] [-0.706, 0.0954] [-0.767, 0.113] Between-term -1.819*** -1.676** -1.828*** -1.676** -1.467*** -1.561*** -1.323*** -1.408** -0.955** -1.183* [-2.810, -0.828] [-2.885,-0.468] [-2.810, -0.845] [-2.885,-0.468] [-2.132,-0.803] [-2.326,-0.796] [-2.014,-0.632] [-2.294,-0.522] [-1.641, -0.269] [-2.104,-0.262] Year dummies No No Yes Yes Yes Yes Yes Yes Yes Yes GP covariates No No No No Yes Yes Yes Yes Yes Yes GP practice covariates No No No No No No Yes Yes Yes Yes Local context covariates* No No No No No No No No Yes Yes Constant 30.26*** 28.74*** 30.14*** 28.36*** 25.23 225.1* 47.97 223.5* 22.45 216.6* [27.95,32.57] [27.95,29.53] [26.97,33.31] [27.67,29.05] [-35.24,85.71] [37.85,412.3] [-16.03,112.0] [43.71,403.2] [-48.56,93.46] [47.68,385.6] N 17,210 11,244 17,210 11,244 17,210 11,244 17,210 11,244 17,210 11,244 R2 Within 0.0128 0.0144 0.0525 0.0623 0.0697 0.0797 0.0721 0.0816 0.0756 0.0889 Notes: The dependent variable is the share of adults with depression in the GP list that has antidepressant therapy Covariates are included in the model demeaned and centered (e.g. for each covariate two terms are included, one with the mean over the study period and other with the difference from the mean in each year). *Some of the covariates are reported at the municipality level, which correspond roughly to the local group geographical boundaries. 95% confidence intervals in brackets. Standard errors clustered at the local group level (55 local groups in all models). * p < 0.05, ** p < 0.01, *** p < 0.001. REWB – within between random effects model; FE – fixed effects. 5
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