Table 1.

Inclusion and exclusion criteria used in screening process.

Inclusion Criteria	Exclusion Criteria
English language peer-reviewed studies	Reviews, editorials, commentaries, or opinion pieces, grey literature, theses/dissertations, or conference proceedings
Any geographical location	Studies using parent/caregiver report
No start or end dates were used	Studies investigating self-harm or suicidality in TGD veterans or prison inmates
No age restrictions
Only quantitative empirical studies
Cross-sectional, longitudinal, cohort and mixed methods studies
Measured outcome of self-harm (irrespective of suicidal intent), suicide ideation, and/or suicide attempt (attempt on own life or completed suicide)
Studies must investigate risk and/or protective factors for self-harm in Transgender and Gender-Diverse (TGD) people
Participants self-identifying as TGD (including diverse gender identities; see appendix 1