Let's get serious. Is there a twin control study for smoking and lung cancer?
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With MZ controls, inconclusive = anything other than a clear negative result. As for one with high power, can I have a link?
http://ije.oxfordjournals.org/content/25/3/554.full.pdf+html … Since much more data is now available at STR, could use that for higher power. But data are clear already
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Very high power at NAS-NRC Twin Registry, but expensive to get data. STR requires PHD + Swedish collaborator + fee.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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Interesting. Though with twin controls, a positive result doesn't mean causal.
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No, but this one is surely causal. Tons of strong indirect evidence. No need to follow Fisher. http://aje.oxfordjournals.org/content/133/5/416 …
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There's tons of indirect evidence lack of exercise and eating junk food are bad for you too, but you know how that goes.
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Twin control for eating and obesity. https://helda.helsinki.fi/bitstream/handle/10138/42421/bogl_dissertation.pdf?sequence=1 …
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Various activities including physical and obesity. Twin control. https://helda.helsinki.fi/bitstream/handle/10138/20360/leisurea.pdf?sequence=1 …
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Obesity and cancer risk. http://onlinelibrary.wiley.com/doi/10.1002/ijc.11266/full … I could go on. Don't be so stubborn. :)
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I'm aware of large twin controls out of Sweden. Nil effect. Last one is standard correlational and is worthless. Other...
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