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Author Affiliation: Health Outcomes Research Group, Memorial Sloan-Kettering Cancer Center, New York, New York.
In this case-control study, the investigators compared the smoking histories of individuals with lung cancer and without lung cancer. Participants were matched for age and several dimensions of smoking history were ascertained through a standardized set of questionnaires (including age at initiation and cessation, and average amount smoked per day of cigarettes, cigars, or with a pipe). Each individual's occupational history and history of prior lung disease was captured to control for possible confounders. The investigators found that individuals with lung cancer had a more extensive smoking history than individuals without lung cancer.
See PDF for full text of the original JAMA article.
Bach PB. Smoking as a Factor in Causing Lung Cancer. JAMA. 2009;301(5):539–541. doi:10.1001/jama.2009.57
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