Abstract

This study utilized latent class analysis to identify latent groups of individuals, reflecting the expanded dimensions of suicidality, which encompass not only one’s own suicidality but also that of significant others. Drawing on data from Wave 3 and Wave 5 of the National Longitudinal Study of Adolescent to Adult Health, the analysis included 3215 individuals. The LCA revealed three distinct latent classes: the Exposed, the Suicidal, and the Non-Suicidal and Unexposed. Subsequent analysis using the Kruskal-Wallis test found significant longitudinal differences in mental health outcomes, including depression and suicidality, among these three latent classes over a 15-year period. Specifically, the Suicidal Class scored significantly higher than the Exposed Class and the Non-Suicidal and Unexposed Class for both depression and suicidality. Additionally, the Exposed Class scored significantly higher than the Non-Suicidal and Unexposed Class. These findings have implications for mental health researchers and practitioners, including the implementation of preventive and postventive interventions in the early stages, as well as the engagement of individual, family, and community partnerships in these interventions.

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