Andrew Stickley1, Ai Koyanagi2, Vladislav Ruchkin3, Yoko Kamio4. 1. Department of Child and Adolescent Mental Health, National Institute of Mental Health, National Center for Neurology and Psychiatry (NCNP), 4-1-1 Ogawahigashi, Kodaira, Tokyo 187-8553, Japan; The Stockholm Center for Health and Social Change (SCOHOST), Södertörn University, Huddinge 141 89, Sweden; Department of Human Ecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. Electronic address: andrew.stickley@sh.se. 2. Parc Sanitari Sant Joan de Déu, Universitat de Barcelona, Fundació Sant Joan de Déu, Dr Antoni Pujades, 42, Sant Boi de Llobregat, Barcelona 08830, Spain; Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Monforte de Lemos 3-5 Pabellón 11, 28029 Madrid, Spain. 3. Child and Adolescent Psychiatry Unit, Department of Neuroscience, Uppsala University, Uppsala S-751 85, Sweden; Child Study Center, Yale University Medical School, New Haven, CT 06520, USA; Säter Forensic Psychiatric Clinic, Säter S-783 27, Sweden. 4. Department of Child and Adolescent Mental Health, National Institute of Mental Health, National Center for Neurology and Psychiatry (NCNP), 4-1-1 Ogawahigashi, Kodaira, Tokyo 187-8553, Japan.
Abstract
BACKGROUND: Adults with attention-deficit/hyperactivity disorder (ADHD) may have an increased risk of engaging in suicidal behavior. This study examined this association in the general adult population where there has been little research. METHODS: Data came from the Adult Psychiatric Morbidity Survey 2007. This was a representative sample of the English adult household population aged ≥16 years (N=7403). The Adult ADHD Self-Report Scale (ASRS) was used to obtain information on ADHD symptoms. The Clinical Interview Schedule Revised (CIS-R) was used to assess six forms of common mental disorder (CMD). Information was also obtained on the lifetime and past 12-month occurrence of suicide ideation and attempts. Logistic regression analysis was used to examine these associations. RESULTS: After adjusting for comorbid disorders, adults with more ADHD symptoms had significantly higher odds for suicidal behavior. When a single cut-off point was used to classify ADHD (ASRS score ≥14), odds ratios ranged from 1.62 (lifetime suicide attempt) to 2.43 (past 12-month suicide ideation). When ADHD symptoms were categorized by strata (I: a score of 0-9; II: 10-13; III: 14-17; IV: 18-24), compared to adults in stratum I, those in stratum IV had odds ratios ranging from 2.16 (lifetime suicide ideation) to 3.68 (past 12-month suicide attempt). LIMITATIONS: ADHD and suicide data came from self-reports which may have been affected by socially desirable responding. CONCLUSIONS: ADHD symptoms were linked to suicidal behavior after controlling for comorbid conditions. Health care professionals should be alerted to the increased suicide risk among adults with ADHD symptoms.
BACKGROUND: Adults with attention-deficit/hyperactivity disorder (ADHD) may have an increased risk of engaging in suicidal behavior. This study examined this association in the general adult population where there has been little research. METHODS: Data came from the Adult Psychiatric Morbidity Survey 2007. This was a representative sample of the English adult household population aged ≥16 years (N=7403). The Adult ADHD Self-Report Scale (ASRS) was used to obtain information on ADHD symptoms. The Clinical Interview Schedule Revised (CIS-R) was used to assess six forms of common mental disorder (CMD). Information was also obtained on the lifetime and past 12-month occurrence of suicide ideation and attempts. Logistic regression analysis was used to examine these associations. RESULTS: After adjusting for comorbid disorders, adults with more ADHD symptoms had significantly higher odds for suicidal behavior. When a single cut-off point was used to classify ADHD (ASRS score ≥14), odds ratios ranged from 1.62 (lifetime suicide attempt) to 2.43 (past 12-month suicide ideation). When ADHD symptoms were categorized by strata (I: a score of 0-9; II: 10-13; III: 14-17; IV: 18-24), compared to adults in stratum I, those in stratum IV had odds ratios ranging from 2.16 (lifetime suicide ideation) to 3.68 (past 12-month suicide attempt). LIMITATIONS: ADHD and suicide data came from self-reports which may have been affected by socially desirable responding. CONCLUSIONS:ADHD symptoms were linked to suicidal behavior after controlling for comorbid conditions. Health care professionals should be alerted to the increased suicide risk among adults with ADHD symptoms.
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