Sarah M Goodday1, Susan Bondy1, Rinku Sutradhar2,3, Hilary K Brown1,4, Anne Rhodes1,4,5. 1. 1 Department of Epidemiology, University of Toronto, Dalla Lana School of Public Health, Toronto, Ontario. 2. 2 Department of Biostatistics, University of Toronto, Dalla Lana School of Public Health, Toronto, Ontario. 3. 3 Institute for Clinical Evaluative Sciences, Toronto, Ontario. 4. 4 Department of Psychiatry, University of Toronto, Dalla Lana School of Public Health, Toronto, Ontario. 5. 5 The Offord Centre for Child Studies, McMaster University, Toronto, Ontario.
Abstract
OBJECTIVE: To estimate the cumulative incidence of self-reported suicide-related thoughts (SRTs) and suicide attempts (SAs) in males and females from 11 to 25 years of age in Canada. METHODS: A cohort study was conducted by linking cycles 2 to 8 from the National Longitudinal Survey of Children and Youth, a representative survey of Canadians aged 11 to 25 years conducted from 1996 to 2009. The 11- to 25-year cumulative incidence of self-reported SRTs and SAs (with suicidal intent) was estimated in males and females using a novel application of a counting process approach to account for discontinuous risk intervals between survey cycles. RESULTS: The risk of SRTs was 29% (95% confidence interval [CI], 26% to 31%) in females and 19% (95% CI, 16% to 23%) in males. The risk of SAs was 16% (95% CI, 14% to 19%) in females and 7% (95% CI, 6% to 8%) in males. Over 70% of SRTs and SAs first occur between 11 and 16 years of age and 30% between 11 and 13 years of age, respectively. CONCLUSIONS: The risk of SRTs and SAs is high in young Canadians, with most events first occurring in early to mid-adolescence and possibly earlier. Females are at a higher risk compared to males. This research underscores the need for better longitudinal surveillance of SRTs and SAs in the population. A counting process framework could be useful for future research using existing longitudinal surveys suffering from design limitations relating to gaps in respondent follow-up. Furthermore, these findings have implications for younger SRT and SA risk management by clinicians and earlier implementation of suicide prevention programs.
OBJECTIVE: To estimate the cumulative incidence of self-reported suicide-related thoughts (SRTs) and suicide attempts (SAs) in males and females from 11 to 25 years of age in Canada. METHODS: A cohort study was conducted by linking cycles 2 to 8 from the National Longitudinal Survey of Children and Youth, a representative survey of Canadians aged 11 to 25 years conducted from 1996 to 2009. The 11- to 25-year cumulative incidence of self-reported SRTs and SAs (with suicidal intent) was estimated in males and females using a novel application of a counting process approach to account for discontinuous risk intervals between survey cycles. RESULTS: The risk of SRTs was 29% (95% confidence interval [CI], 26% to 31%) in females and 19% (95% CI, 16% to 23%) in males. The risk of SAs was 16% (95% CI, 14% to 19%) in females and 7% (95% CI, 6% to 8%) in males. Over 70% of SRTs and SAs first occur between 11 and 16 years of age and 30% between 11 and 13 years of age, respectively. CONCLUSIONS: The risk of SRTs and SAs is high in young Canadians, with most events first occurring in early to mid-adolescence and possibly earlier. Females are at a higher risk compared to males. This research underscores the need for better longitudinal surveillance of SRTs and SAs in the population. A counting process framework could be useful for future research using existing longitudinal surveys suffering from design limitations relating to gaps in respondent follow-up. Furthermore, these findings have implications for younger SRT and SA risk management by clinicians and earlier implementation of suicide prevention programs.
Authors: Danuta Wasserman; Christina W Hoven; Camilla Wasserman; Melanie Wall; Ruth Eisenberg; Gergö Hadlaczky; Ian Kelleher; Marco Sarchiapone; Alan Apter; Judit Balazs; Julio Bobes; Romuald Brunner; Paul Corcoran; Doina Cosman; Francis Guillemin; Christian Haring; Miriam Iosue; Michael Kaess; Jean-Pierre Kahn; Helen Keeley; George J Musa; Bogdan Nemes; Vita Postuvan; Pilar Saiz; Stella Reiter-Theil; Airi Varnik; Peeter Varnik; Vladimir Carli Journal: Lancet Date: 2015-01-09 Impact factor: 79.321
Authors: Jason R Randall; Leslie L Roos; Lisa M Lix; Laurence Y Katz; James M Bolton Journal: Int J Methods Psychiatr Res Date: 2017-02-24 Impact factor: 4.035
Authors: Ian Colman; Niko Yiannakoulias; Don Schopflocher; Lawrence W Svenson; Rhonda J Rosychuk; Brian H Rowe Journal: CJEM Date: 2004-09 Impact factor: 2.410
Authors: A Schmidtke; U Bille-Brahe; D DeLeo; A Kerkhof; T Bjerke; P Crepet; C Haring; K Hawton; J Lönnqvist; K Michel; X Pommereau; I Querejeta; I Phillipe; E Salander-Renberg; B Temesváry; D Wasserman; S Fricke; B Weinacker; J G Sampaio-Faria Journal: Acta Psychiatr Scand Date: 1996-05 Impact factor: 6.392
Authors: John L Oliffe; Mary T Kelly; Gabriela Gonzalez Montaner; Paul S Links; David Kealy; John S Ogrodniczuk Journal: Can J Psychiatry Date: 2021-03-15 Impact factor: 4.356
Authors: Rachel Hb Mitchell; Cornelius Ani; Claude Cyr; James Irvine; Ari R Joffe; Robin Skinner; Sam Wong; Antonia S Stang; Melanie Laffin; Daphne J Korczak Journal: Can J Psychiatry Date: 2021-11-30 Impact factor: 5.321
Authors: Sara Zulyniak; Kathryn Wiens; Andrew G M Bulloch; Jeanne V A Williams; Aysha Lukmanji; Ashley K Dores; Leah J Isherwood; Scott B Patten Journal: Can J Psychiatry Date: 2021-05-17 Impact factor: 4.356