I’d start with asking questions that a. matter and b. have some degree of ability to implement and impact the people who would benefit most.https://twitter.com/Alan_Watson_/status/1223224456677666817 …
Read that again. They validated the FFQ using a subset who completed dietary diaries as well. They didn't use the 0 years or 10 year data, because the FFQS were different. The length of the entire longitudinal cohort is immaterial, they didn't use all the data
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You claimed that "they ask people what they eat (once)" - they did it 3 x, & checked over an extended period too then assessed the soy intake vs the 10 year questionnaire. The length of the cohort is relevant if only because you had claimed it was 10 years - it clearly wasn't.pic.twitter.com/h7HcSBVOXL
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Sigh. They didn't use the 10-year data to calculate exposure, they checked correlation between the two. And 0.42 is very low, which actually supports my argument - obviously, the exposure changed a lot I said 10-15 years - from the 5 year to the 20th year, depending on death
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