Supplementary materials to "Allegiance and treatment quality as moderators of the comparative effectiveness of psychotherapy? A systematic review and meta-analysis of studies comparing humanistic psychotherapy to other psychotherapy approaches"

Supplementary materials to: Schünemann, O., Jansen, A., Willutzki, U., & Heinrichs, N. (2025). Allegiance and treatment quality as moderators of the comparative effectiveness of psychotherapy? A systematic review and meta-analysis of studies comparing humanistic psychotherapy to other psychotherapy approaches. Clinical Psychology in Europe, 7(1), Article e9709. https://doi.org/10.32872/cpe.9709 The supplementary material includes Appendix A with Supplementary Tables (Study characteristics, Study quality, Allegiance, Bona fide and Adherence rating), Appendix B with a Supplementary Figure (Exemplary funnel plot), and Appendix C with Supplementary Information (evaluation procedure of the GSBP; additional inclusion and exclusion criteria, preliminary results: overall main effect sizes of HPT). unknown unknown