Table 2. Systematic reviews excluded after full text assessment.

Reference	Reason for exclusion
Brauch, AM, Girresch, SK. A review of empirical treatment studies for adolescents non suicidal self-injury. Journal of cognitive psychotherapy. 2012;26:3–18.	Overlap – covered by Hawton 2015
Calear, AL, Christensen, H, Freeman, A, Fenton, K, Grant, JB, van Spijker, B, et al. A systematic review of psychosocial suicide prevention interventions for youth. European Child & Adolescent Psychiatry. 2016;25(5):467–82.	Overlap – covered
Corcoran, J, Dattalo, P, Crowley, M, Brown, E, Grindle, L. A systematic review of psychosocial interventions for suicidal adolescents. Children and Youth Services Review. 2011;33(11):2112–18.	Too old
Cusimano, MD, Sameem, M. The effectiveness of middle and high school-based suicide prevention programmes for adolescents: a systematic review. Injury Prevention. 2011;17:43–9.	Too old
Danish Health Authority. Vurdering og visitation af selvmordstruede. Rådgivning til sunhedspersonale [Internet]. Copenhagen: Danish Health Authority; 2007 [retrieved 29.07.2018]. Available from: https://www.sst.dk/da/udgivelser/2007/vurdering-og-visitation-af-selvmordstruede---raadgivning-til- sundhedspersonale	Does not comply with the DARE- criteria and too old
Frey, LM, Hunt, QA. Treatment for suicidal thoughts and behaviour: a review of family-based interventions. Journal of Marital and Family Therapy. 2017;44(1):107–124.	Does not comply with the DARE- criteria
Inagaki, M, Kawashima, Y, Kawanishi, C, Yonemoto, N, Sugimoto, T, Furuno, T, et al. Interventions to prevent repeat suicidal behaviour in patiens admitted to an emergency department for a suicide attempt: A meta-analysis. Journal of Affective Disorders. 2015;175:66–78.	Overlap – covered by Hawton 2015
Labelle, R, Pouliot, L, Janelle, A. A systematic review and meta-analysis of cognitive behavioural treatments for suicidal and self-harm behaviours in adolescents. Canadian Psychology/ Psychologie Canadienne. 2015;56(4):368–78.	Overlap – covered by Hawton 2015
Norwegian Directorate of Health. Handlingsplan for forebygging av selvmord og selvskading 2014– 2017 [Internet]. Oslo: The Norwegian Directorate of Health; 2014 [retrieved 29.06.2018]. Available from: https://helsedirektoratet.no/publikasjoner/handlingsplan-for-forebygging-av-selvmord-og- selvskading-20142017	Does not comply with the DARE- criteria
Norwegian Directorate of Health. Ivaretakelse av etterlatte ved selvmord [Internet]. Oslo: The Norwegian Directorate of Health; 2011 [retrieved 29.06.2018]. Available from: https://www. helsedirektoratet.no/tema/selvskading-og-selvmord	Does not comply with the DARE- criteria and too old
Norwegian Directorate of Health. Nasjonale retningslinjer for forebygging av selvmord i psykisk helsevern [Internet]. Oslo: The Norwegian Directorate of Health; 2006 [retrieved 29.06.2018]. Available from: https://www.helsedirektoratet.no/tema/selvskading-og-selvmord	Does not comply with the DARE- criteria and too old
Norwegian Directorate of Health. Veiledende materiell for kommunene om forebygging av selvskade og selvmord [Internet]. Oslo: The Norwegian Directorate of Health; 2017 [retrieved 29.06.2018]. Available from: https://www.helsedirektoratet.no/tema/selvskading-og-selvmord	Does not comply with the DARE- criteria
Ougrin, D, Tranah, T, Leigh, E, Taylor, L, Asarnow, JR. Practitioner review: self-harm in adolescents. Journal of Child Psychology and Psychiatry. 2012;53(4):337–50.	Overlap – covered by Ourgin 2015 (an update of this review and several others)
Ougrin, D, Latif, S. Specific psychological treatment versus treatment as usual in adolescents with self-harm systematic review and meta-analysis. Crisis. 2011;32(2):74–80.	Too old
Perry, Y, Werner-Seidler, A, Calear, AL, Christensen, H. Web-Based and Mobile Suicide Prevention Interventions for Young People: A Systematic Review. Journal of the Canadian Academy of Child & Adolescent Psychiatry/Journal de l.Acade.mie canadienne de psychiatrie de l.enfant et de l.adolescent. 2016;25(2):73–9.	Overlap – covered by Witt 2017
Robinson, J. A systematic review of school-based interventions aimed at preventing, treating, and responding to suicide-related behaviour in young people. Crisis. 2013;34:164–82.	Overlap – covered by SBU 2015
Robinson, J, Hetrick, SE, Martin, C. Preventing suicide in young people: systematic review. Australian and New Zealand Journal of Psychiatry. 2011;45:3–26.	Too old
SBU. Erfarenheter och upplevelser av bemötande och hjälp bland personer med självskadebeteende [Internet]. Stocholm: Swedish agency for health techonogy assessment and assessment of social services (SBU); 2015 [retrieved 29.07.2018]. Available from: http://www.sbu. se/contentassets/4b3a210e262742c9aede925a23889cb5/bemotande_hjalp_sjalvskadebeteende_ 1_201504.pdf	Does not comply with the DARE- criteria
Smedslund, G, Dalsbø, TK, Reinar, LM. Effects of secondary preventive interventions against self- harm [Internet]. Oslo: Norwegian Institute of Public Health; 2016 [retrieved 29.07.2018]. Available from: https://www.fhi.no/publ/2016/effekter-av-sekundarforebyggende-tiltak-mot-villet-egenskade-/	Partly overlap – our review includes Hawton 2015 and SBU 2015, and we excluded Inagaki 2015 and Soomro 2015
Soomro, GM, Kakhi, S. Deliberate self-harm (and attempted suicide). Clinical Evidence. 2015;05(1012):1–30.	Lacks studies on children and adolescents under 18 years old
Wei, Y, Kutcher, S, LeBlanc, JC. Hot idea or hot air: A systematic review of evidence for two marketed youth suicide prevention programs and recommendations for implementation. J Can Acad Child Adolesc Psychiatry. 2015;24(1):5–16.	Overlap – mostly covered by NICE 2018 and SBU 2014