Joseph J Palamar1, Austin Le2, Benjamin H Han3. 1. New York University Grossman School of Medicine, Department of Population Health, 180 Madison Avenue, New York, NY, 10016, United States. Electronic address: joseph.palamar@nyulangone.org. 2. New York University Grossman School of Medicine, Department of Population Health, 180 Madison Avenue, New York, NY, 10016, United States; New York University College of Dentistry, 345 East 24th Street, New York, NY, 10010, United States. 3. University of California San Diego Department of Medicine, Division of Geriatrics and Gerontology, 9500 Gilman Drive, San Diego, CA, 92093, United States.
Abstract
BACKGROUND: Prevalence of cannabis use has been increasing among select subgroups in the US; however, trend analyses typically examine prevalence of use across years. We sought to determine whether there is seasonal variation in use. METHODS: We conducted a secondary analysis of the National Survey on Drug Use and Health, a repeated cross-sectional survey of nationally representative probability samples of noninstitutionalized populations age ≥12 in the US. Quarterly trends in any past-month cannabis use were estimated using data from 2015-2019 (N = 282,768). RESULTS: Prevalence of past-month cannabis use increased significantly from 2015 to 2019 from 8.3%-11.5%, a 38.2 % increase (P < 0.001). Prevalence increased across calendar quarters on average from 8.9 % in January-March to 10.1 % in October-December, a 13.0 % increase (P < 0.001). Controlling for survey year and participant demographics, each subsequent quarter was associated with a 6% increase in odds for use (aOR=1.06, 95 % CI: 1.04-1.07). There were significant increases by quarter among all subgroups of sex, race/ethnicity, education, and among most adult age groups (Ps<0.05), with a 52.7 % increase among those age ≥65. Prevalence also significantly increased among those without a medical cannabis prescription and those not proxy-diagnosed with cannabis use disorder (Ps<0.01), suggesting recreational use may be driving increases more than medical or more chronic use. Those reporting past-year LSD or blunt use in particular were more likely to report higher prevalence of use later in the year (a 4.9 % and 3.3 % absolute increase, respectively; Ps<0.05). CONCLUSION: The prevalence of cannabis use increases throughout the year, independently of annual increases.
BACKGROUND: Prevalence of cannabis use has been increasing among select subgroups in the US; however, trend analyses typically examine prevalence of use across years. We sought to determine whether there is seasonal variation in use. METHODS: We conducted a secondary analysis of the National Survey on Drug Use and Health, a repeated cross-sectional survey of nationally representative probability samples of noninstitutionalized populations age ≥12 in the US. Quarterly trends in any past-month cannabis use were estimated using data from 2015-2019 (N = 282,768). RESULTS: Prevalence of past-month cannabis use increased significantly from 2015 to 2019 from 8.3%-11.5%, a 38.2 % increase (P < 0.001). Prevalence increased across calendar quarters on average from 8.9 % in January-March to 10.1 % in October-December, a 13.0 % increase (P < 0.001). Controlling for survey year and participant demographics, each subsequent quarter was associated with a 6% increase in odds for use (aOR=1.06, 95 % CI: 1.04-1.07). There were significant increases by quarter among all subgroups of sex, race/ethnicity, education, and among most adult age groups (Ps<0.05), with a 52.7 % increase among those age ≥65. Prevalence also significantly increased among those without a medical cannabis prescription and those not proxy-diagnosed with cannabis use disorder (Ps<0.01), suggesting recreational use may be driving increases more than medical or more chronic use. Those reporting past-year LSD or blunt use in particular were more likely to report higher prevalence of use later in the year (a 4.9 % and 3.3 % absolute increase, respectively; Ps<0.05). CONCLUSION: The prevalence of cannabis use increases throughout the year, independently of annual increases.
Authors: Scott Veldhuizen; Laurie Zawertailo; Anna Ivanova; Sarwar Hussain; Peter Selby Journal: Nicotine Tob Res Date: 2021-05-24 Impact factor: 4.244
Authors: Brian Borsari; Erica Eaton Short; Nadine R Mastroleo; John T P Hustad; Tracy O'Leary Tevyaw; Nancy P Barnett; Christopher W Kahler; Peter M Monti Journal: J Subst Abuse Treat Date: 2014-01-13