Final published version, 2.9 MB, PDF document
Available under license: CC BY: Creative Commons Attribution 4.0 International License
Final published version
Licence: CC BY: Creative Commons Attribution 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Attrition in the European Child Cohort IDEFICS/I.Family
T2 - Exploring Associations Between Attrition and Body Mass Index
AU - Langeheine, Malte
AU - Pohlablen, H
AU - Lauria, Fabio
AU - Veidebaum, Toomas
AU - Tornartis, Michael
AU - Molnar, Denes
AU - Eiben, Gabriele
AU - De Henauw, Stefaan
AU - Moreno, Luis A.
AU - Williams, Garrath David
AU - Ahrens, Wolfgang
AU - Rach, Stefan
AU - IDEFICS and I.Family Consortia
PY - 2018/8/15
Y1 - 2018/8/15
N2 - 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. © 2018 Langeheine, Pohlabeln, Lauria, Veidebaum, Tornaritis, Molnar, Eiben, de Henauw, Moreno, Williams, Ahrens and Rach.
AB - 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. © 2018 Langeheine, Pohlabeln, Lauria, Veidebaum, Tornaritis, Molnar, Eiben, de Henauw, Moreno, Williams, Ahrens and Rach.
KW - cohort attrition
KW - child health
KW - BMI
KW - selection effects
KW - cross country differences
U2 - 10.3389/fped.2018.00212.
DO - 10.3389/fped.2018.00212.
M3 - Journal article
VL - 6
SP - 1
EP - 13
JO - Frontiers in Pediatrics
JF - Frontiers in Pediatrics
SN - 2296-2360
M1 - 212
ER -