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Anorexia nervosa versus bulimia nervosa: differences based on retrospective correlates in a case–control study

Abstract

Objective

This study is the result of two Portuguese case–control studies that examined the replication of retrospective correlates and preceding life events in anorexia nervosa (AN) and bulimia nervosa (BN) development. This study aims to identify retrospective correlates that distinguish AN and BN

Method

A case–control design was used to compare a group of women who met Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition criteria for AN (N = 98) and BN (N = 79) with healthy controls (N = 86) and with other psychiatric disorders (N = 68). Each control group was matched with AN patients regarding age and parental social categories. Risk factors were assessed by interviewing each person with the Oxford Risk Factor Interview.

Results

Compared to AN, women with BN reported significantly higher rates of paternal high expectations, excessive family importance placed on fitness/keeping in shape, and negative consequences due to adolescent overweight and adolescent objective overweight.

Discussion

Overweight during adolescence emerged as the most relevant retrospective correlate in the distinction between BN and AN participants. Family expectations and the importance placed on keeping in shape were also significant retrospective correlates in the BN group.

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Acknowledgments

This research was partially supported by a Portuguese Fundação para a Ciência e a Tecnologia/Foundation for Science and Technology research grant to the last author (PTDC/PSI-PCL/099981/2008) and a doctoral grant to the first author (FCT-SFRH/BD/22038/2005). The authors acknowledge Christopher G. Fairburn, MD, of the Department of Psychiatry at Oxford University (UK) for providing initial consultation and training and Helen A. Doll, PhD, for help with the initial data analysis.

Author information

Correspondence to Bárbara C. Machado or Paulo P. Machado.

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Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

Ethical standard

This study was reviewed and approved by the Institutional Review Board and conformed to both Portuguese and European regulations on conducting research with human participants and on the management of personal data.

Informed consent

All participants gave written informed consent, and in the case of minors, child assent and parental consent for research participation were obtained.

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Machado, B.C., Gonçalves, S.F., Martins, C. et al. Anorexia nervosa versus bulimia nervosa: differences based on retrospective correlates in a case–control study. Eat Weight Disord 21, 185–197 (2016). https://doi.org/10.1007/s40519-015-0236-6

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Keywords

  • Anorexia nervosa
  • Bulimia nervosa
  • Risk factors
  • Adolescent overweight