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by jxy
3162 days ago
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Some people hate statistics for a reason, and this is the exact reason. It is outrageous how the author conveniently manipulated the data to support the claim in their paper. For those of you who want to do your own analysis, assuming their data are authentic, take a look at their Table I: http://ascopubs.org/na101/home/literatum/publisher/asco/jour... |
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Out of those 60 non-smokers with lung cancer apparently just 20 were men (out of 14,208 study participants who were men and non-smokers => 0.14%)
http://ascopubs.org/na101/home/literatum/publisher/asco/jour...
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Curiously this also means non-smoking women have 1.28x higher chance to get lung cancer than non-smoking men (unrelated to vitamins).
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For never-smokers vs smokers men risk ratios are then (again unrelated to vitamins):
- current smoker: 31.7x higher risk
- recent smoker (stopped < 10 years ago): 21.3x higher risk
- past smoker (stopped > 10 years ago): 8.9x higher risk
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Take home message: stop smoking!
Precautionary principle: if you take B vitamin supplements, you can continue (for slight decrease of cancer risk), just make sure you aren't taking mega-doses (especially if you still smoke), but really - stop smoking - the sooner you do less cumulative harm you get.