Subtyping dietary restraint and negative affect in a longitudinal community sample of girls.
OBJECTIVE
This study tests the validity of the "dietary-depressive" subtype (typified by greater negative affect) and a "dietary" subtype (typified by dietary restraint only) using a diverse longitudinal community sample.


METHODS
Girls at ages 10, 12, and 14 completed the Child Eating Attitudes Test, the Child Symptom Inventory-4, and Body Image Measure. Body Mass Index was assessed at each age.


RESULTS
Unlike previous studies, cluster analysis revealed an at-risk "dietary-depressive" (R+) subtype (18.7%,100/534) and a not at-risk (R-) subtype, distinguished by few depressive symptoms and little dietary restraint (81.3%,434/534), but no "dietary" subtype. When compared with the R- subtype, the R+ subtype had significantly greater eating disordered behavior and attitudes. The R+ subtype at age 10 was a risk factor for binge-eating but not obesity at ages 12 and 14.


CONCLUSIONS
Dietary restraint and depressive symptoms combined predict binge-eating longitudinally in a diverse community sample of girls.
Chen
Eunice Y
EY
Department of Psychiatry and Behavioral Neuroscience, The University of Chicago, Chicago, Illinois 60637, USA. chen@bsd.uchicago.edu
McCloskey
Michael S
MS
Keenan
Kathryn E
KE
D000293:Adolescent; D000339:Affect; D001828:Body Image; D015992:Body Mass Index; D052018:Bulimia Nervosa / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D002648:Child; D016000:Cluster Analysis; D003866:Depressive Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology*; D004038:Diet, Reducing / Q000523:psychology*; D004522:Educational Status; D005247:Feeding Behavior; D001068:Feeding and Eating Disorders / Q000145:classification* / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D009765:Obesity / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D011237:Predictive Value of Tests; D011569:Psychiatric Status Rating Scales; D012307:Risk Factors; D012959:Socioeconomic Factors