Effect of length of treatment on weight loss.
- 1 January 1989
- journal article
- clinical trial
- Published by American Psychological Association (APA) in Journal of Consulting and Clinical Psychology
- Vol. 57 (3) , 450-452
- https://doi.org/10.1037//0022-006x.57.3.450
Abstract
In this study we tested whether the efficacy of behavior therapy for obesity might be improved by lengthening the duration of treatment. Forty-eight obese clients were randomly assigned to either a standard treatment of 20 weekly sessions or to an extended treatment of 40 weekly sessions. The content of each program was identical, but the treatment procedures were introduced in a more gradual manner in the extended condition. At Week 20, the conditions showed equivalent weight losses. At 40- and 72-week evaluations, however, the extended treatment produced significantly greater mean weight losses than did the standard treatment.Keywords
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