1. Risk for self-reported anorexia or bulimia nervosa based on drive for thinness and negative affect clusters/dimensions during adolescence: A three-year prospective study of the TCh AD cohort.
- Author
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Peñas ‐ Lledó, Eva, Bulik, Cynthia M., Lichtenstein, Paul, Larsson, Henrik, and Baker, Jessica H.
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ANOREXIA nervosa , *BULIMIA , *AFFECT (Psychology) , *ANXIETY , *CHI-squared test , *CHILD Behavior Checklist , *CLUSTER analysis (Statistics) , *COMPARATIVE studies , *STATISTICAL correlation , *MENTAL depression , *FISHER exact test , *LEANNESS , *LONGITUDINAL method , *CLASSIFICATION of mental disorders , *PSYCHOLOGICAL tests , *QUESTIONNAIRES , *RESEARCH funding , *SELF-evaluation , *TWINS , *LOGISTIC regression analysis , *RELATIVE medical risk , *CROSS-sectional method , *MANN Whitney U Test , *KRUSKAL-Wallis Test , *DISEASE risk factors - Abstract
ABSTRACT Objective This study explored the cross-sectional and predictive effect of drive for thinness and/or negative affect scores on the development of self-reported anorexia nervosa (AN) and bulimia nervosa (BN). Method K-means were used to cluster the Eating Disorder Inventory-Drive for Thinness (DT) and Child Behavior Checklist Anxious/Depressed (A/D) scores from 615 unrelated female twins at age 16-17. Logistic regressions were used to assess the effect of these clusters on self-reported eating disorder diagnosis at ages 16-17 ( n = 565) and 19-20 ( n = 451). Results DT and A/D scores were grouped into four clusters: Mild (scores lower than 90th percentile on both scales), DT (higher scores only on DT), A/D (higher scores only on A/D), and DT-A/D (higher scores on both the DT and A/D scales). DT and DT-A/D clusters at age 16-17 were associated cross-sectionally with AN and both cross-sectionally and longitudinally with BN. The DT-A/D cluster had the highest prevalence of AN at follow-up compared with all other clusters. Similarly, an interaction was observed between DT and A/D that predicted risk for AN. Discussion Having elevated DT and A/D scores may increase risk for eating disorder symptomatology above and beyond a high score on either alone. Findings suggest that cluster modeling based on DT and A/D may be useful to inform novel and useful intervention strategies for AN and BN in adolescents. © 2015 Wiley Periodicals, Inc. (Int J Eat Disord 2015; 48:692-699) [ABSTRACT FROM AUTHOR]
- Published
- 2015
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