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Trajectories of Nicotine and Cannabis Vaping and Polyuse From Adolescence to Young Adulthood (JAMA Network Open)

Publication Topics

California Health Interview Survey; 2014 California Health Interview Survey (CHIS 2014); 2015 California Health Interview Survey (CHIS 2015); Tobacco/Smoking; Adolescents/Children; Adult

Publication Type

CHIS Journal Article

Publication Date


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<a onclick="OpenPopUpPage('http:\u002f\\u002f_layouts\u002flistform.aspx?PageType=4\u0026ListId={7AAD61FA-4BCB-48C0-B0B7-87AFDC3673EF}\u0026ID=1816\u0026RootFolder=*', RefreshPage); return false;" href=";ListId={7AAD61FA-4BCB-48C0-B0B7-87AFDC3673EF}&amp;ID=1816&amp;RootFolder=*">H. Isabella Lanza</a>

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<a onclick="OpenPopUpPage('http:\u002f\\u002f_layouts\u002flistform.aspx?PageType=4\u0026ListId={7AAD61FA-4BCB-48C0-B0B7-87AFDC3673EF}\u0026ID=151\u0026RootFolder=*', RefreshPage); return false;" href=";ListId={7AAD61FA-4BCB-48C0-B0B7-87AFDC3673EF}&amp;ID=151&amp;RootFolder=*">et al</a>

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Summary: Authors evaluate nicotine vaping and cannabis vaping trajectories from late adolescence to young adulthood (≥18 years of age) and the extent of polysubstance vaping. In this prospective cohort study, 5 surveys (including information on substance vaped) were completed at 10 high schools in the Los Angeles, California, metro area. Students were surveyed at 6-month intervals from fall of 11th grade (October to December 2015; wave 5) through spring of 12th grade (March to June 2017; wave 8) and again approximately 1 to 2 years after high school (October 2018 to October 2019; wave 9).

Self-reported frequency of nicotine vaping and cannabis vaping within the past 30 days across 5 time points from late adolescence to young adulthood. Trajectories were measured with these past 30-day use frequencies at each wave. 

Findings: The analytic sample included 3,322 participants with at least 1 time point of data (mean [SD] age, 16.50 [0.42] years at baseline; 1,777 [53.5%] female; 1,573 [47.4%] Hispanic or Latino). Growth mixture modeling identified the 5-trajectory model as optimal for both nicotine vaping and cannabis vaping. Trajectories for nicotine and cannabis vaping were similar (nonusers: 2246 [67.6%] nicotine, 2,157 [64.9%] cannabis; infrequent users: 566 [17.0%] nicotine, 608 [18.3%] cannabis; moderate users: 167 [5.0%] nicotine, 233 [7.0%] cannabis; young adult–onset frequent users: 213 [6.4%] nicotine, 190 [5.7%] cannabis; adolescent-onset escalating frequent users: 131 [3.9%] nicotine, 134 [4.0%] cannabis). Males had greater odds of belonging to the adolescent-onset escalating frequent users nicotine and cannabis vaping trajectories compared with nonusers. Polysubstance vaping was common, with those in trajectories reflecting more frequent nicotine vaping (adolescent-onset escalating frequent users and young adult–onset frequent users) having a high probability of membership (85% and 93%, respectively) in a cannabis-use trajectory.

In this cohort study, the prevalence and type of nicotine vaping and cannabis vaping developmental trajectories from late adolescence to young adulthood were similar. Polysubstance vaping was common from late adolescence to young adulthood, particularly among those reporting more frequent vaping use. The findings suggest that public health policy and clinical interventions should address polysubstance vaping in both adolescence and young adulthood.

This study cites data from the 2014 and 2015 California Health Interview Surveys. 


Article 1

Journal Article: Trajectories of Nicotine and Cannabis Vaping and Polyuse From Adolescence to Young Adulthood

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Press Release

Related Link 1

California Health Interview Survey (CHIS)

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Version: 3.0
Created at 11/16/2020 10:36 PM by i:0#.f|uclachissqlmembershipprovider|celeste
Last modified at 11/18/2020 1:56 PM by i:0#.f|uclachissqlmembershipprovider|venetia