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The scenario is one in which smoking is a confounder in the relationship between coffee consumption and bladder cancer, and the amount of confounding bias removed at different levels of smoking misclassification is quantified [26]
The number of people who smoke marijuana frequently is relatively low, most studies have been done in younger populations that are at low risk for cardiovascular disease, and many people who use marijuana also use tobacco products, making it difficult to look at the effects of marijuana independently
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Randy: Speaks German Tom: Very interesting
There are 70 known carcinogens in cigarette smoke, including formaldehyde, acrolein, lead, arsenic and benzene
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