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Anorexia Nervosa And Eating Disorder Not Otherwise Specified (NOS) In Singapore: A Seven-Year Retrospective Study

Goh Kye Hock Robin, Lee Ee Lian, Pearlene Lim, Lum Shin Si

Abstract


Objective: Anorexia nervosa and eating disorder not otherwise specified (NOS), an eating disorder not fulfilling anorexia nervosa DSM-IV criteria are on a rising trend in Singapore. The aims of this paper were to study the clinical characteristics and features of patients with anorexia and eating disorder NOS in Singapore. 

Methods: A retrospective cohort analysis of 373 patients between 2003 and 2010 at a tertiary hospital was done. Inclusion criteria included inpatients and outpatients with the age range of 12 years old to 40 years old fulfilling the Diagnostic and Statistical Manual (DSM)-IV criteria for anorexia nervosa and patients with the diagnosis of eating disorder NOS. The subjects are analyzed based on the severity of the eating disorder and the presentation subtypes. 

Results: An analysis of the overall demographic data revealed the female to the male ratio to be 22.4:1. The Chinese formed the largest ethnic group in the study population with 242 (86.1%) patients, and the bulk of the patients (75.8%) patients were between 12 to 20 years old. Anorexia nervosa-restricting subtype was the most common eating disorder (55.2%) and the most common body mass Index (BMI) was between BMI 14.6 – 16.5 (35.2%). Restriction technique (p = 0.01), binge/purge (p = 0.03) and exercise (p < 0.001) are statistically significant to cause transaminitis in patients. 

Conclusion: There were significant changes in the demographics compared to the study reviewing patients from 1994 and 2002. There was a significant increase in the Caucasian population with changes in the Singapore immigration policy. A detail history taken during first visit can reduce the morbidity and mortality of these patients.

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Keywords


Anorexia Nervosa; Eating Disorder; Restriction; Binge/Purge; Transaminitis

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