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BMC Res Notes. 2018 Apr 25;11(1):257. doi: 10.1186/s13104-018-3373-y.

A single-arm pilot study of guided self-help treatment based cognitive behavioral therapy for bulimia nervosa in Japanese clinical settings.

Author information

1
Department of Cognitive Behavioral Physiology, Chiba University Graduate School of Medicine, Chiba, Japan.
2
Research Center for Child Mental Development, Chiba University, Chiba, Japan.
3
Center for Forensic Mental Health, Chiba University, Chiba, Japan.
4
Institute for Psychological Research, Meiji Gakuin University, Tokyo, Japan.
5
Department of Clinical Cell Biology and Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
6
Department of Psychiatry, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, Chiba, 260-8670, Japan.
7
Department of Psychiatry, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, Chiba, 260-8670, Japan. mnak@iuhw.ac.jp.
8
Department of Psychiatry, School of Medicine, International University of Health and Welfare, 4-3 Kozunomori, Narita City, Chiba, 286-8686, Japan. mnak@iuhw.ac.jp.

Abstract

OBJECTIVE:

Guided self-help treatments based on cognitive behavioral therapy (CBT-GSH) are regarded as a first-line effective treatment for bulimia nervosa (BN). With limited application for CBT-GSH in Japanese clinical settings, we conducted a single arm pilot study in order to confirm the acceptability and availability of CBT-GSH in Japan.

RESULTS:

25 women with BN received 16-20 sessions of face-to-face CBT-GSH. Primary outcomes were the completion rate of intervention and abstinence rates from objective bingeing and purging as assessed by the Eating Disorder Examination. Secondary outcomes were other self-report measurements of the frequency of bingeing and purging, and characteristic psychopathologies of eating disorders. Assessments were conducted before CBT as baseline as well as after CBT. 92% (23/25) of the participants completed the CBT sessions. After CBT-GSH, 40% (10/25) of the participants (intention-to-treat) achieved symptom abstinence. The mean binge and purge episodes during the previous 28 days improved from 21.88 to 10.96 (50% reduction) and from 22.44 to 10.88 (52% reduction), each (before CBT-GSH to after CBT-GSH), and the within-group effect sizes were medium (Cohen's d = 0.67, 0.65, each). Our study provided a preliminary evidence about the feasibility of CBT-GSH in Japanese clinical settings for the future. Trial registration This study was registered retrospectively in the national UMIN Clinical Trials Registry on July 10, 2013 (registration ID: UMIN000011120).

KEYWORDS:

Bulimia nervosa; Eating disorders; Guided self-help treatments based on cognitive behavioral therapy (CBT-GSH)

PMID:
29695260
PMCID:
PMC5918895
DOI:
10.1186/s13104-018-3373-y
[Indexed for MEDLINE]
Free PMC Article

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