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Jennifer M Jones a Department of Psychiatry, University
Health Network, Toronto, Ontario, Canada M5G 2CA, b Division of Endocrinology,
Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada K1H
8LI, c Division of
Endocrinology, Hospital for Sick Children, Toronto, Ontario, Canada M5G
2CA, d Ambulatory Care for
Eating Disorders, University Health Network, e Department of Psychiatry, University Health
Network
Correspondence to: G Rodin gary.rodin{at}uhn.on.ca
Objective:
To determine the prevalence of eating
disorders in adolescent females with type 1 diabetes mellitus compared
with that in their non-diabetic peers.
Design:
Cross sectional case-control led study.
Setting:
Diabetes clinics and schools in three
Canadian cities.
Subjects:
356 females aged 12-19 with type 1 diabetes and 1098 age matched non-diabetic controls.
Main outcome measure:
Eating disorders meeting
Diagnostic and Statistical Manual of Mental Disorders
(DSM-IV) criteria.
Results:
Eating disorders that met DSM-IV
criteria were more prevalent in diabetic subjects (36, 10%) than in
non-diabetic controls (49, 4%) (odds ratio 2.4, 95% confidence
interval 1.5 to 3.7; P<0.001). Subthreshold eating disorders were also
more common in those with diabetes (49, 14%) than in controls (84, 8%) (odds ratio 1.9, 95% confidence interval 1.3 to 2.8; P<0.001). Mean haemoglobin A1c concentration was higher in
diabetic subjects with an eating disorder (9.4% (1.8)) than in those
without (8.6% (1.6)), P=0.04).
Conclusions:
DSM-IV and subthreshold eating disorders
are almost twice as common in adolescent females with type 1 diabetes as in their non-diabetic peers. In diabetic subjects, eating disorders are associated with insulin omission for weight loss and impaired metabolic control.