Falk et al., in a of the risk for laryngeal cancer, found that: "Higher risks were associated with smoking nonfiltered than filtered cigarettes." For those who smoked filtered cigarettes, the OR was 5.9 (95% CI = 2.4-14.4); for those who smoked non-filtered cigarettes, the OR was 9.0 (95% CI = 3.2-25.1).

4. Those products are menthol-flavored cigarettes.

The study enrolled 1,074 patients with cancer who were smokers and were therefore referred to a tobacco treatment program at a comprehensive cancer center during the years 2012 and 2013. Smoking status, nicotine dependence, and e-cigarette use was assessed at baseline and the patients were followed for six-month. The primary outcome was smoking cessation, measured as seven-day abstinence at follow-up.

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