This supplementary appendix reports additional analyses of the randomized controlled trial published on World Psychiatry with the following title:
Acarturk C, Uygun E, Ilkkursun Z, Carswell K, Tedeschi F, Batu M, Eskici S, Kurt G, Anttila M, Au T, Baumgartner J, Churchill R, Cuijpers P, Becker T, Koesters M, Lantta T, Nosè M, Ostuzzi G, Popa M, Purgato M, Sijbrandij M, Turrini G, Välimäki M, Walker L, Wancata J, Zanini E, White RG, van Ommeren M, Barbui C. Effectiveness of a WHO self-help psychological intervention for preventing mental disorders among Syrian refugees in Turkey: a randomized controlled trial. World Psychiatry 2022