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LETTER |
The authors are with the Division of General Medicine and Primary Care, Beth Israel Deaconess Medical Center and the Department of Medicine, Harvard Medical School, Boston, Mass.
Correspondence: Requests for reprints should be sent to Suzanne Leveille, PhD, Division of General Medicine and Primary Care, Beth Israel Deaconess Medical Center, 330 Brookline Ave, RO-103,Boston, MA 02215 (e-mail: sleveill@bidmc.harvard.edu).
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We thank Flegal and her colleagues for their suggestions. As noted in the articles they cite, a number of methods have been proposed for estimating relative risk. There is ongoing debate in the literature about the choice of models and methods to address potential bias in estimates of attributable fractions.1 Measures of attributable risk using the standard formulas must be considered within the limitations of the data and potential biases, as we discussed in our article.
In our analyses, the adjusted odd ratios differed from the unadjusted odds ratios modestly in the earlier waves of the National Health and Nutrition
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