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August 3, 2005

Underweight, Overweight, Obesity, and Excess Deaths

Author Affiliations

Letters Section Editor: Robert M. Golub, MD, Senior Editor.

JAMA. 2005;294(5):551-553. doi:10.1001/jama.294.5.552-b

To the Editor: The study by Dr Flegal and colleagues1 showed that those persons in the overweight category (BMI 25 to <30) had a lower number of excess deaths compared with those in the normal-weight category (BMI 18.5 to <25). However, their summary results were obtained from pooling 3 separate cohorts of statistically divergent results from very heterogeneous time periods, a factor that has major methodological implications in how these data should be statistically pooled.

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