Journal
LANCET PSYCHIATRY
Volume 8, Issue 12, Pages 1053-1061Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S2215-0366(21)00281-9
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Funding
- Medical Research Council
- Wolfson Centre for Young People's Mental Health
- Wolfson Foundation
- MRC [MC_PC_19009] Funding Source: UKRI
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This study examined adult outcomes of adolescent-onset clinically significant depressive symptoms using population-based data from the UK. Different trajectories of depression in adolescence were found to be associated with adult functional impairment, suicidal self-harm, mental health difficulties, and education and employment status.
Background Depression often first emerges in adolescence and, for many, is a lifelong disorder. The long-term clinical course of depression is highly variable. We aimed to examine the adult outcomes of adolescent-onset trajectories of clinically significant depressive symptoms and to identify factors differentiating trajectories that persist and desist in adulthood. Methods We included participants from the English population-based Avon Longitudinal Study of Parents and Children with data on depressive symptoms. Self-reported depression symptoms were assessed on ten occasions when participants were age 10middot5-25 years using the short Mood and Feelings Questionnaire, and major depressive disorder episodes were assessed at age 13middot0 years, 15middot0 years, 17middot5 years, and 25middot0 years. We characterised trajectories of depression symptoms using latent class growth analysis, for which we required depression data at least once from each of three key phases: ages 10middot5-13middot5 years; 16middot5-18middot5 years; and 21-25 years. We examined adult outcomes by assessing lifetime suicidal self-harm and functional impairment at age 24middot0 years, and employment, education, and the self-reported Strengths and Difficulties Questionnaire at age 25middot0 years. Findings We studied 4234 participants: 2651 (63%) female, 1582 (37%) male, and one individual with missing sex data. The mean age was 10middot6 years (SD 0middot2) at baseline and 25middot8 years (SD 0middot5) at the final timepoint. Data on ethnicity were not available in our data set. We identified four depression trajectory classes: adolescent-persistent depression with onset early in adolescence (7%, n approximate to 279), adolescent-limited depression with onset later in adolescence and remittance by adult life (14%, n approximate to 592), adult-increasing depression (25%, n approximate to 1056), and stable-low levels of depression (54%, n approximate to 2307). The adolescent-persistent class was associated with poor adult outcomes for functional impairment (62%), suicidal self-harm (27%), mental health difficulties (25%), and not being in education, employment, or training (16%). Adolescent-limited depression was associated with transient adolescent stress, but by early adulthood functional impairment and mental health difficulties were similar to the stable-low group. Major depressive disorder polygenic score (odds ratio [OR] 1middot36, 95% CI 1middot04-1middot79), adolescent educational attainment (OR 0middot47, 0middot30-0middot74), and any early childhood adversity (OR 2middot60, 1middot42-4middot78), that persisted into adulthood (OR 1middot60, 1middot38-1middot87) distinguished the adolescent-persistent and adolescent-limited groups. Interpretation The future course of adolescent depression can be differentiated by age at onset during adolescence, adolescent academic attainment, early and persistent adversity, and genetic loading. A detailed social and educational history could be helpful in making clinical decisions about the intensity of interventions for young people with clinically elevated depressive symptoms who seek help. Funding Medical Research Council, Wolfson Centre for Young People's Mental Health, Wolfson Foundation. Copyright @ 2021 Elsevier Ltd. All rights reserved.
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