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Interpreting weight losses from lifestyle modification trials: using categorical data
International Journal of Obesity, 10/19/09

Christian JG et al. – Although studies in obese subjects using weight loss medications typically report mean and categorical weight loss, results from diet and exercise intervention trials typically only report mean weight change from baseline along with a level of significance. These categorical data indicate that a substantial fraction of subjects in each lifestyle modification intervention achieved clinically meaningful weight loss, even when the average weight loss is modest.

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