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Attrition in the European Child Cohort IDEFICS/I. Family: Exploring Associations Between Attrition and Body Mass Index
Leibniz Institute for Prevention Research and Epidemiology–BIPS, Bremen, Germany.
Leibniz Institute for Prevention Research and Epidemiology–BIPS, Bremen, Germany.
Institute of Food Sciences, National Research Council, Avellino, Italy.
National Institute for Health Development, Tallinn, Estonia.
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2018 (Engelska)Ingår i: Frontiers in Pediatrics, ISSN 2296-2360, Vol. 6, artikel-id 212Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Attrition may lead to bias in epidemiological cohorts, since participants who are healthier and have a higher social position are less likely to drop out. We investigated possible selection effects regarding key exposures and outcomes in the IDEFICS/I.Family study, a large European cohort on the etiology of overweight, obesity and related disorders during childhood and adulthood. We applied multilevel logistic regression to investigate associations of attrition with sociodemographic variables, weight status, and study compliance and assessed attrition across time regarding children's weight status and variations of attrition across participating countries. We investigated selection effects with regard to social position, adherence to key messages concerning a healthy lifestyle, and children's weight status. Attrition was associated with a higher weight status of children, lower children's study compliance, older age, lower parental education, and parent's migration background, consistent across time and participating countries. Although overweight (odds ratio 1.17, 99% confidence interval 1.05–1.29) or obese children (odds ratio 1.18, 99% confidence interval 1.03–1.36) were more prone to drop-out, attrition only seemed to slightly distort the distribution of children's BMI at the upper tail. Restricting the sample to subgroups with different attrition characteristics only marginally affected exposure-outcome associations. Our results suggest that IDEFICS/I.Family provides valid estimates of relations between socio-economic position, health-related behaviors, and weight status.

Ort, förlag, år, upplaga, sidor
2018. Vol. 6, artikel-id 212
Nyckelord [en]
cohort attrition, child health, BMI, selection effects, cross country differences
Nationell ämneskategori
Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi
Forskningsämne
Individ och samhälle VIDSOC
Identifikatorer
URN: urn:nbn:se:his:diva-16183DOI: 10.3389/fped.2018.00212ISI: 000441612200001PubMedID: 30159304Scopus ID: 2-s2.0-85052862035OAI: oai:DiVA.org:his-16183DiVA, id: diva2:1247188
Anmärkning

on behalf of the IDEFICS and I.Family Consortia

Tillgänglig från: 2018-09-11 Skapad: 2018-09-11 Senast uppdaterad: 2018-10-23Bibliografiskt granskad

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Eiben, Gabriele

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Institutionen för hälsa och lärandeForskningsspecialiseringen Hälsa och Lärande
Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi

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