Which of the following statement(s) is/are false about lung cancer? 1. 80% of lung cancer deaths in the US are caused by smoking. [ Select ] ["False", "True"] 2. Lung cancer risk increases with both quantity and duration of smoking. [ Select ] ["True", "False"] 3. Exposure to secondhand smoke increases lung cancer risk . [ Select ] ["False", "True"] 4. UV radiation increases the risk of lung cancer.
Added by Jeffrey H.
Step 1
Considered True. - 2: Risk increases with both quantity and duration of smoking. True. - 3: Secondhand smoke exposure increases lung cancer risk. True. - 4: UV radiation increases risk of lung cancer. False. Show more…
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The following data was collected in an unmatched study of lung cancer cases and controls. Cases Controls Smokers 688 650 Non-Smokers 21 59 a) Calculate the appropriate measure of association for estimating the relationship between smoking and lung cancer risk. Provide a brief interpretation of this finding. b) In a refinement of the analysis above, investigators further stratify the exposed group according to daily cigarette consumption (see below). Calculate the odds ratio for each category of cigarettes per day, using non-smokers as the reference category. Cigarettes per day Cases Controls Odds Ratio Non-Smokers 21 59 1.0 1 to 4 cigs 40 67 5 to 14 269 303 15 to 24 205 196 25 to 49 142 71 ≥50 32 13
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