Speaking of "unverified and uncontrolled": http://tobaccoanalysis.blogspot.com.au/2016/09/pfizer-study-of-psychiatric-risks-of.html?m=1 …
Nope the RCT had up to 10k the observational studies with similar results were up to 800k
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Even if you surveyed the entire population you couldn't filter out a 0.6‰ point increase in risk.
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That would require approx. 250k individuals to demonstrate a stat significant difference.
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