Generalisability of the interpersonal theory of suicide to latent profiles of young people attending treatment in a suicide prevention service.

Our findings highlight the importance reducing low belongingness in youth, which is a component of all supported interventions of youth suicide prevention. However, given the modest association of changes in ITS variables had with changes in suicidal ideation, it may be fruitful to elaborate on the relative importance on types of low belongingness or include other non-ITS variables.