Correlates of suicidal ideation and suicide attempts among bisexual+, gay/lesbian, and heterosexual young adults.

Introduction: Compared to their exclusively gay/lesbian or heterosexual identifying peers, young people identifying as bisexual+ (e.g. bisexual, pansexual, asexual, queer or questioning) are at elevated risk for suicidal ideation (SI) and attempts (SA). The present study aimed to establish whether the prevalence of, and psychosocial risk factors for, SI and SA vary as a function of sexual identity.

Methods: Young adults (N = 274; 18-29 years old) were recruited via online crowdsourcing. They completed questionnaires assessing adverse childhood experiences (ACEs), emotion dysregulation, impulsivity, depression symptoms and lifetime history of SI and SA. Spearman correlations, Kruskal-Wallis H-tests and binomial logistic regression models were used.

Results: No variable was associated with SI. Bisexual+ individuals reported greater SA than the heterosexual group, though statistically similar to the gay/lesbian group. A similar pattern emerged for ACEs. The bisexual+ group reported greater depression symptoms than the gay/lesbian group. Impulsivity and emotion dysregulation did not vary by sexual identity. Controlling for these psychosocial and sociodemographic variables did not alter results: bisexual+ individuals were almost three times more likely to report SA than heterosexual individuals, OR = 2.93 95% CI [1.16, 7.44]; gay/lesbian and heterosexual individuals had a statistically similar likelihood of reporting SA, OR = 1.09, 95% CI [0.27, 4.37].

Conclusion: This is the first study to establish that young adults identifying as bisexual+ are at greater risk for SA after controlling for well-established psychosocial correlates; this was not the case for SI. Further work is needed to establish the aetiology of this risk.