BMJ Publishing Group, British Journal of Sports Medicine, 3(50), p. 176-183
DOI: 10.1136/bjsports-2015-h2469rep
BMJ Publishing Group, BMJ, jun02 2(350), p. h2469-h2469
DOI: 10.1136/bmj.h2469
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Objective To investigate the strength of the association between victimisation by peers at age 13 years and depression at 18 years. Design Longitudinal observational study. Setting Avon Longitudinal Study of Parents and Children, a UK community based birth cohort. Participants 6719 participants who reported on peer victimisation at age 13 years. Main outcome measures Depression defined according to international classification of diseases, 10th revision (ICD-10) criteria, assessed using the clinical interview schedule-revised during clinic assessments with participants when they were aged 18 years. 3898 participants had data on both victimisation by peers at age 13 years and depression at age 18 years. Results Of the 683 participants who reported frequent victimisation at age 13 years, 101 (14.8%) were depressed according to ICD-10 criteria at 18 years; of the 1446 participants reporting some victimisation at age 13 years, 103 (7.1%) were depressed at age 18 years; and of the 1769 participants reporting no victimisation at age 13 years, 98 (5.5%) were depressed at age 18 years. Compared with children who were not victimised those who were frequently victimised by peers had over a twofold increase in odds of depression (odds ratio 2.96, 95% confidence interval 2.21 to 3.97, P