Psychological and Weight Characteristics of Anorexia Nervosa Patients Who Develop Bulimia Nervosa
Author Information
Author(s): Nishimura Hiroki, Komaki Gen, Ando Tetsuya, Nakahara Toshihiro, Oka Takakazu, Kawai Keisuke, Nagata Toshihiko, Nishizono Aya, Okamoto Yuri, Okabe Kenjiro, Koide Masanori, Yamaguchi Chikara, Saito Satoshi, Ohkuma Kazuyoshi, Nagata Katsutaro, Naruo Tetsuro, Takii Masato, Kiriike Nobuo, Ishikawa Toshio
Primary Institution: National Center of Neurology and Psychiatry
Hypothesis
Can psychological and anthropometric factors predict the transition from anorexia nervosa-restricting type to bulimia nervosa?
Conclusion
Patients who transition from anorexia nervosa-restricting type to bulimia nervosa tend to have higher body mass indices and specific psychological traits.
Supporting Evidence
- Patients who developed bulimia nervosa had significantly higher current and maximum BMI.
- Higher parental criticism and lower self-directedness were associated with the transition to bulimia nervosa.
- The differences in psychological traits disappeared when controlling for depression.
Takeaway
Some people with anorexia nervosa might start binge eating and purging, and we found that those who do often have higher weights and different feelings about their parents.
Methodology
The study analyzed psychological and anthropometric data from 80 patients diagnosed with anorexia nervosa-restricting type, comparing those who developed bulimia nervosa with those who did not.
Potential Biases
Potential biases may arise from self-reported measures and the exclusion of patients who had recovered.
Limitations
The study's cross-sectional design limits causal inferences, and the sample may not represent all patients with anorexia nervosa.
Participant Demographics
1 man and 79 women, mean age 24 years.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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