Women's Health Weekly
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Breast Cancer
New breast cancer research from P.L. Hornross and colleagues discussed
August 21st, 2008
According to recent research from the United States, " To evaluate the reproducibility and validity of the food-frequency questionnaire (FFQ) used in the California Teachers Study (CTS) cohort and to use this data to quantify the effects of correcting nutrient-breast cancer relative risks for measurement error. One hundred and ninety five CTS cohort members participated in a 10-month dietary validation study that included four 24-h dietary recalls and pre- and post-study FFQs." "Shrout-Fleiss intraclass correlations for reproducibility were computed. Under several standard assumptions concerning the correlations of errors in the FFQs and 24-h recalls, we calculated...
Source: Women's Health Weekly (2008-08-21)
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