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Prevalence of purging at age 16 and associations with negative outcomes among girls in three community-based cohorts.
Behavioural and Brain Science Unit, Institute of Child Health, University College London, 30 Guilford Street, London, United Kingdom.
Division of Adolescence Medicine, Boston's Children Hospital, Harvard Medical School, Boston, MA, United States.
Behavioural and Brain Science Unit, Institute of Child Health, University College London, 30 Guilford Street, London, United Kingdom.
Department of Mathematics and Statistics, Amherst College, Amherst, MA, United States.
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2015 (English)In: Journal of Child Psychology and Psychiatry and Allied Disciplines, ISSN 0021-9630, E-ISSN 1469-7610, Vol. 56, no 1, p. 87-96Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: The comorbidity of purging behaviours, such as vomiting, inappropriate use of laxatives, diuretics or slimming medications, has been examined in literature. However, most studies do not include adolescents, individuals who purge in the absence of binge eating, or those purging at subclinical frequency. This study examines the prevalence of purging among 16-year-old girls across three countries and their association with substance use and psychological comorbidity.

METHODS: Data were obtained by questionnaire in 3 population-based cohorts (Avon Longitudinal Study of Parents and Children (ALSPAC), United Kingdom, n = 1,608; Growing Up Today Study (GUTS), USA, n = 3,504; North Finland Birth Cohort (NFBC85/86), Finland, n = 2,306). Multivariate logistic regressions were employed to estimate associations between purging and outcomes. Four models were fit adjusting for binge eating and potential confounders of these associations.

RESULTS: In ALSPAC, 9.7% of girls reported purging in the 12-months prior to assessment, 7.3% in GUTS, and 3.5% in NFBC. In all 3 cohorts, purging was associated with adverse outcomes such as binge drinking (ALSPAC: odds ratio (OR) = 2.0, 95% confidence interval (CI) = 1.4-2.9; GUTS: OR = 2.5, 95% CI = 1.5-4.0; NFBC: OR = 1.7, 95% CI = 1.0-2.8), drug use (ALSPAC: OR = 2.9, 95% CI = 1.8-4.7; GUTS: OR = 4.5, 95% CI = 2.8-7.3; NFBC: OR = 4.1, 95% CI = 2.6-6.6), depressive symptoms in ALSPAC (OR = 2.2, 95% CI = 1.5-3.1) and GUTS(OR = 3.7, 95% CI = 2.2-6.3), and several psychopathology measures including clinical anxiety/depression in NFBC (OR = 11.2, 95% CI = 3.9, 31.7).

CONCLUSIONS: Results show a higher prevalence of purging behaviours among girls in the United Kingdom compared to those in the United States and Finland. Our findings support evidence highlighting that purging in adolescence is associated with negative outcomes, independent of its frequency and binge eating.

Place, publisher, year, edition, pages
2015. Vol. 56, no 1, p. 87-96
Keywords [en]
Adolescence, eating behaviour, eating disorder, epidemiology, prevalence
National Category
Psychology
Identifiers
URN: urn:nbn:se:miun:diva-23359DOI: 10.1111/jcpp.12283ISI: 000346739400011PubMedID: 24975817Scopus ID: 2-s2.0-84919845843OAI: oai:DiVA.org:miun-23359DiVA, id: diva2:761338
Available from: 2014-11-06 Created: 2014-11-06 Last updated: 2017-12-05Bibliographically approved

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Rodriguez, Alina

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