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Differences in CGI‐P and CGI‐T trajectories in groups stratified by factors associated with the placebo response. (A) to (C) show significant interactions between ethnicity and previous treatment with medication, respectively. (D) to (G) show significant interactions between parental marital status, parental income, maternal smoking during pregnancy, and maternal education, respectively, and the change in parents' CGI‐P scores between the baseline and placebo weeks
