Abstract
There is high risk of suicidality in bipolar disorder (BD), particularly in early onset cases. The literature regarding correlates and putative predictors of suicide attempts (SA), non-suicidal self-injury (NSSI) and suicidal ideation (SI) among youth with BD remains sparse. Participants included 197 adolescents with BD, divided into 4 groups: SA (with or without NSSI), NSSI (with or without SI), SI only, and comparison group (CG; no SA/NSSI/SI). Diagnoses, treatment, and suicidality measures were determined via semi-structured interviews, conducted between 2009 and 2017. Univariate analyses were followed by multinomial regression. Overall, 73.6% of participants had history of SA, NSSI, and/or SI. In comparison to CG, SA and NSSI were each associated with BD-II/-NOS (odds ratio [OR] = 15.99, p = 0.002; OR = 16.76, p = 0.003), female sex (OR = 6.89, p = 0.006; OR = 3.76, p = 0.02), and emotion dysregulation (OR = 1.10, p < 0.001; OR = 1.07, p = 0.004). NSSI and SI were each associated with most severe lifetime depression (OR = 1.10, p = 0.01; OR = 1.10, p = 0.01). SA and SI were associated with psychiatric hospitalization (OR = 19.45, p = 0.001; OR = 6.09, p = 0.03). SA was associated with poorer global functioning at most severe episode (OR = 0.88, p = 0.008). NSSI was associated with not living with both natural parents (OR = 0.22, p = 0.009). Study limitations include cross-sectional and retrospective design, stringent cut-offs for SA and NSSI, and recruitment from a tertiary clinical setting. Three quarters of adolescents with BD have had suicidality and/or self-injury. SA and NSSI were most similar to one another, and most different from CG, supporting the broader construct of self-harm. Future research should address the gap in knowledge regarding how sex differences and neurobiology are associated with the observed clinical differences.
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We would like to thank all staff, study participants and families for their time and contributions to this study. This study was supported in part by philanthropic donations to Sunnybrook from the Great Gulf Foundation and the Michael Albert Garron Foundation.
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Dr. Goldstein acknowledges research grant support from Brain Canada, Canadian Institutes of Health Research, Heart and Stroke Foundation, National Institute of Mental Health, and the Departments of Psychiatry at the University of Toronto and Sunnybrook Health Sciences Centre. Dr. Schaffer is a member of advisory board/speakers bureau for Lundbeck, Janssen, and Otsuka/Bristol Myers Squibb. Dr. Sinyor declares that he has received in-kind assistance from Google Canada in developing a website to deliver a free youth health literacy curriculum. All other authors have no potential or actual conflicts of interest to declare.
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Khoubaeva, D., Dimick, M., Timmins, V.H. et al. Clinical correlates of suicidality and self-injurious behaviour among Canadian adolescents with bipolar disorder. Eur Child Adolesc Psychiatry 32, 41–51 (2023). https://doi.org/10.1007/s00787-021-01803-9
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DOI: https://doi.org/10.1007/s00787-021-01803-9