Volumetric choice experiment to estimate the impact of e-cigarette and heated tobacco product characteristics on substitution and complementary use among adults who smoke cigarettes and recently initiated e-cigarette use.

2 3 Despite a decreasing trend, there were still 28.3 million US adults reported currently smoking cigarettes in 2021. 3 Some studies indicate that health benefits could occur if people who smoke cigarettes switch entirely to electronic cigarettes (e-cigarettes). 4 5 In particular, Levy et al estimated that a replacement of smok

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