Table 1. Inclusion criteria used during screening process.

Inclusion Criteria

Exclusion criteria

• Peer reviewed studies. • Any geographical location. • English language. • Empirical quantitative studies, following cross-sectional, prospective, longitudinal, cohort and case-control designs. • Participants that have had a measured outcome from the dimension of self-harm and suicide; self-harm (self-harm or injury to self-irrespective of suicidal intent), suicidal ideation (thoughts, plan, death wish), or suicide attempt (individual took an attempt on their life, suicide death). • Studies must consider risks associated with or predictive of self-harm, suicidal ideation, suicidal attempt or death. • Participants must be young people (12–25 years). • Participants that are identified or self-identified as any sexual or gender minority or member of LGBTQ+.

• Non-peer reviewed literature. • Not English language. • Grey literature such as theses, dissertations or conference proceedings. • Articles such as commentaries, reviews, editorial or opinion pieces. • Empirical qualitative studies. • Participants who have no experience of self-harm, suicidal ideation or suicidal attempt. • Sample not aged between 12 and 25 years, e.g. adults 26 years and above or children 12 years and under. • Participants who are identified as heterosexual or not part of sexual or gender minority.