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Time line of questionnaire and biological sample data collection in NHS for these analyses. Time line of questionnaire and biological sample data collection.

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Presentation on theme: "Time line of questionnaire and biological sample data collection in NHS for these analyses. Time line of questionnaire and biological sample data collection."— Presentation transcript:

1 Time line of questionnaire and biological sample data collection in NHS for these analyses.
Time line of questionnaire and biological sample data collection in NHS for these analyses. Questionnaires are administered every 2 years beginning in 1976 but only questionnaire data for nondietary covariates from years used for this study (1990 and 2000) are shown. FFQs asking about diet over the previous 12 months were administered in 1984, 1986, 1990, 1994, and 1998. Julie Lin, and Gary C. Curhan CJASN 2011;6: ©2011 by American Society of Nephrology


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