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Author: Kelly, Brian C.
Resulting in 2 citations.
1. Kelly, Brian C.
Vuolo, Mike
Cognitive Aptitude, Peers, and Trajectories of Marijuana Use from Adolescence through Young Adulthood
PLoS One 14,10 (25 October 2019): e0223152.
Also: DOI: 10.1371/journal.pone.0223152
Cohort(s): NLSY97
Publisher: PLOS
Keyword(s): Armed Services Vocational Aptitude Battery (ASVAB); Cognitive Ability; Drug Use; Peers/Peer influence/Peer relations; Transition, Adulthood

Permission to reprint the abstract has not been received from the publisher.

Background: Using a nationally representative longitudinal cohort, we examine how cognitive aptitude in early adolescence is associated with heterogeneous pathways of marijuana use from age sixteen through young adulthood. We also examine whether this relationship can be explained by the role of cognitive aptitude in the social organization of peer group deviance.

Methods: Using the National Longitudinal Survey of Youth 1997, we identified 5 latent trajectories of frequency of marijuana use between ages 16 and 26: abstainers, dabblers, early heavy quitters, consistent users, and persistent heavy users. Multinomial regression assessed the relationship of cognitive aptitude in early adolescence with these latent trajectories, including the role of peer group substance use in this relationship.

Results: A one decile increase in cognitive aptitude in early adolescence is associated with greater relative risk of the dabbler trajectory (RR = 1.048; p < .001) and consistent user trajectory (RR = 1.126; p < .001), but lower relative risk of the early heavy quitter trajectory (RR = 0.917; p < .05) in comparison with the abstainer trajectory. There was no effect for the persistent heavy user trajectory. The inclusion of peer group substance use-either via illegal drugs or smoking-had no effect on these relationships.

Bibliography Citation
Kelly, Brian C. and Mike Vuolo. "Cognitive Aptitude, Peers, and Trajectories of Marijuana Use from Adolescence through Young Adulthood." PLoS One 14,10 (25 October 2019): e0223152.
2. Vuolo, Mike
Lindsay, Sade L.
Kelly, Brian C.
Further Consideration of the Impact of Tobacco Control Policies on Young Adult Smoking in Light of the Liberalization of Cannabis Policies
Nicotine and Tobacco Research 24,1 (January 2022): 60-68.
Also: https://academic.oup.com/ntr/advance-article/doi/10.1093/ntr/ntab149/6323257
Cohort(s): NLSY97
Publisher: Oxford University Press
Keyword(s): Cigarette Use (see Smoking); Drug Use; Geocoded Data; State-Level Data/Policy

Permission to reprint the abstract has not been received from the publisher.

Background: Changing patterns of cannabis consumption related to the liberalization of cannabis policies may have a countervailing effect on tobacco use. We analyzed whether cannabis policies have tempered the effects of tobacco control policies as well as the extent to which they were associated with young adult cigarette smoking.

Methods: Combining data on tobacco and cannabis policies at the state, county, and city levels with the nationally-representative geocoded National Longitudinal Survey of Youth 1997 and Census data, we use multilevel regression and fixed effect analyses to examine the impact of cannabis policies on any past 30-day cigarette smoking, frequency of smoking, and past 30-day near-daily smoking among young adults while accounting for community and individual covariates.

Results: Tobacco control policies, including significant effects of comprehensive smoking bans, total vending machine restrictions, single cigarette sale restrictions, and advertising restrictions, remain robust in reducing young adult smoking, net of cannabis policy liberalization, including the legal status of possession, penalties for sale, and medical cannabis. Cannabis policies do not directly affect young adult smoking patterns in an adverse way.

Bibliography Citation
Vuolo, Mike, Sade L. Lindsay and Brian C. Kelly. "Further Consideration of the Impact of Tobacco Control Policies on Young Adult Smoking in Light of the Liberalization of Cannabis Policies." Nicotine and Tobacco Research 24,1 (January 2022): 60-68.