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KMID : 1234920200200020178
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Journal of Korean Oriental Association for Study of Obesity
2020 Volume.20 No. 2 p.178 ~ p.192
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Comparison of the Effects of Cognitive Behavioral Therapy and Behavioral Treatment on Obesity Treatment by Patient Subtypes: A Systematic Review and Meta-analysis
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Cha Jin-Young
Kim Seo-Young
Shin In-Soo
Park Young-Bae
Lim Young-Woo
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Abstract
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Objectives: The present study aimed to compare the impacts of cognitive behavioral therapy (CBT) and behavioral treatment (BT) on weight loss and psychological outcomes among patients with three different subtypes of obesity: simple obesity, obesity with binge eating disorder, and obesity with depression.
Methods: Embase, PubMed, the Cochrane Central Register of Controlled Trials, Research Information Sharing Service, and Korean Studies Information Service System were systematically searched for randomized controlled trials conducted on or before May 2020, that used CBT to treat obesity. Methodological quality was assessed using Cochrane’s risk of bias tool 2 and publication bias was evaluated through the funnel plot using the trim and fill method, Egger’s test, and Begg and Mazumdar rank correlation test. A meta-analysis was conducted using a random-effects model and the standardized mean difference with 95% confidence interval (CI) was used to determine effect size.
Results: Twenty-one randomized controlled trials with a total of 22 intervention arms and 2,590 patients were included. Our study results revealed that the effects of CBT, compared with BT, on weight loss distinctly differed across all patient subgroups. In the simple obesity group, CBT was more effective than BT (Hedges’ g=0.138, CI=0.012~0.264); however, in the obesity with binge eating disorder group, BT was more effective than CBT (Hedges’ g=-0.228, CI=-0.418~-0.038); in the obesity with depression group, the effect of CBT was not statistically different from that of BT (Hedges’ g=0.276, CI=-0.307~0.859). Further studies with larger sample sizes are required to confirm the outcomes observed in this study.
Conclusions: Our results indicated that the effects of CBT on obesity treatment vary based on patient subtype. Therefore, our findings suggest that CBT or BT should be selectively recommended as a treatment strategy for different obesity subtypes.
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KEYWORD
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Weight loss, Obesity, Cognitive behavioral therapy, Binge-eating disorder
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