There have been 34 studies into lung cancer and exposure to cigarette smoke as a child. 3 suggest a raised risk, nearly four times as many 11 suggest PROTECTION with 20 suggesting no raised or reduced risk. The most famous is the World Health Organization 1998 study which concluded:
"Results: ETS exposure during childhood was not associated with an increased risk of lung cancer (odds ratio [OR] for ever exposure = 0.78; 95% confidence interval [CI] = 0.64–0.96)."
"Conclusions: Our results indicate no association between childhood exposure to ETS and lung cancer risk."
This actually suggests as the upper limit is <_1.0 it="it" is="is" a="a" protection="protection" against="against" lung="lung" cancer.="cancer." p="p">
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There have been 34 studies into lung cancer and exposure to cigarette smoke as a child. 3 suggest a raised risk, nearly four times as many 11 suggest PROTECTION with 20 suggesting no raised or reduced risk. The most famous is the World Health Organization 1998 study which concluded:
"Results: ETS exposure during childhood was not associated with an increased risk of lung cancer (odds ratio [OR] for ever exposure = 0.78; 95% confidence interval [CI] = 0.64–0.96)."
"Conclusions: Our results indicate no association between childhood exposure to ETS and lung cancer risk."
This actually suggests as the upper limit is <_1.0 it="it" is="is" a="a" protection="protection" against="against" lung="lung" cancer.="cancer." p="p">
November 16, 2010 - 1:07amThis Comment
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