Risk perceptions over time by smoking status after Tobacco 21 implementation.

Risk perceptions over time by smoking status after Tobacco 21 implementation.

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Decreasing smoking initiation remains a public health priority. In 2016, California, in the United States, enacted the Tobacco 21 law, which raised the minimum age for the purchase of tobacco products from age 18 to age 21. This paper evaluates whether the enactment and implementation of the Tobacco 21 law changed how young adults perceive the risk...

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Context 1
... better understand this finding, post hoc analyses examined change in perceived risk over time during the post-implementation period as a function of smoking status (i.e., whether participants reported any smoking days at each individual post-implementation wave; see Figure 1). These analyses excluded pre-implementation waves and utilized longitudinal mixed effects regression, with time-varying risk perceptions as the outcome variable. ...