CONCLUSION: The lack of Step1-RCT differences questions the specific effects of PE/TASH. Similar patterns emerged in Step2, but intensified treatment for Step1 non-responders improved outcomes in MPH groups. Step1 response influenced later treatment success. Some stepped-care combinations did not further reduce symptoms, but no rebound effects occurred. The main limitations of this study are the two-step design complexity, limited information on certain (additional) psychosocial components, and…
