Cannabis Risk Perceptions Research Articles

Associations between Cannabis Consumption Methods and Cannabis Risk Perception.

Given diversified cannabis products, we examined associations between cannabis consumption methods and cannabis risk perception of smoking cannabis 1-2 times a week. Using the 2022 U.S. National Survey on Drug Use and Health data (N = 12,796 past-year adult cannabis users; M = 6127 and F = 6669), we used multinomial and binary logistic regression models. Smoking was the most prevalent method, followed by eating/drinking, vaping, and dabbing. One-half of cannabis users reported no perceived risk of smoking cannabis 1-2 times a week, 37.5% perceived slight risk, 9.2% moderate risk, and 2.9% great risk. Those with moderate or great risk perception had a lower likelihood of using 4+ methods of consumption (e.g., RRR = 0.40, 95% CI = 0.20, 0.77 for great risk perception). Any perceived risk was associated with higher odds of edibles/drinks only (e.g., aOR = 2.81, 95% CI = 1.43, 5.54 for great risk perception). Along with medical use and CUD, sociodemographic factors, mental illness, and other substance use were also significant correlates of cannabis consumption methods. Understanding the varying risk perceptions associated with different consumption methods is needed for harm reduction initiatives. More research is needed on cannabis products, particularly edibles/drinks and dabs/concentrates, to better understand the potential risks associated with them.

Associations between noticing public health education campaigns about cannabis and risk perceptions in the northern Canadian territories: a cross-sectional study.

This study investigated whether noticing cannabis education campaigns was associated with increased cannabis risk perceptions in Canada's three territories following non-medical cannabis legalization. Data were from the Cannabis Policy Study in the Territories, including 2452 participants, age ≥16years residing in Yukon, Northwest Territories and Nunavut. Poisson regression with robust standard errors were used to estimate associations between noticing cannabis education campaigns and moderate to very high risk perceptions of daily cannabis smoking, vaping, edible use and exposure to second-hand cannabis smoke, adjusting for sociodemographic characteristics and cannabis-use frequency. Results were compared with associations with risk perceptions of daily alcohol consumption and cigarette smoking, not included in cannabis education campaigns. Interactions were examined between noticing education campaigns and age group and cannabis-use frequency. Cannabis education campaigns were noticed by 40.4% of respondents, with lower awareness among those with lower education and income. Noticing campaigns was associated with higher risk perceptions of daily cannabis smoking [adjusted risk ratio (RRadj) = 1.09, 95% confidence interval (CI): 1.02-1.16] and vaping (RRadj = 1.09, 95%CI: 1.02-1.16). Significant interactions were not found with age group or cannabis-use frequency. Findings are consistent with modest effects of cannabis education campaigns. Approaches are needed to increase reach of cannabis education campaigns, including among groups with lower education and income.

Associations between cannabis risk perceptions and Delta-8 THC use among young adults

ABSTRACT Background Delta-8 THC is a federally unregulated, implicitly legal, psychoactive substance from the cannabis plant. Delta-8 THC popularity and related consequences have been rising in the U.S. Objective Examine factors associated with Delta-8 THC use to fill the literature gap. Methods Data were from a survey among a convenience sample of 18–25-year-olds (n = 166). Mixed effects multivariable logistic regression models examined whether perceived susceptibility and perceived severity of harms from use were associated with past-year Delta-8 THC use. These two predictors were measured separately for Delta-8 and Delta-9 THC. Age, sex, race/ethnicity, student status, and past year Delta-9 THC use were adjusted for as covariates; a random intercept for state was included to account for between-state variabilities. Results The following were associated with higher odds of past-year Delta-8 THC use: lower Delta-8 perceived severity and Delta-9 perceived susceptibility, and higher Delta-9 perceived severity and Delta-8 perceived susceptibility. People who had used Delta-9 in the past year had 20 times the odds of using Delta-8. Conclusions The inconsistent direction of associations between cannabis risk perceptions and Delta-8 THC use may indicate reverse causation. Findings lay the groundwork to understanding theoretical antecedents of Delta-8 THC use, for which future research can build upon.

Perceived risk of harm for different methods of cannabis consumption: A brief report

BackgroundEmerging adults’ (EAs; ages 18–25) perceived risk of cannabis-related harms has decreased in recent decades, potentially contributing to their high prevalence of cannabis consumption. With the changing cannabis policy and product landscape, it is critical to understand perceived risk related to different consumption methods (e.g., smoking, dabbing). We examined differences in cannabis risk perceptions by method and consumption patterns. MethodsEAs recruited from an emergency department (N=359, 71.3% female, 53.5% Black) completed assessments on individual characteristics, cannabis/other substance use, and perceived risk of cannabis-related harm for four different methods (smoking, vaping, dabbing, ingestion) and two use frequencies (occasional, regular). Analyses examined associations between variables of interest and three mutually exclusive groups: no cannabis use, smoking-only, and multiple/other methods. ResultsForty-two percent of EAs reported no past 3-month cannabis use, 22.8% reported smoking only, and 35.1% reported consumption via multiple/other methods. Among all participants, the methods and frequency with the largest number of EAs endorsing any perceived risk from cannabis were dabbing and vaping cannabis regularly; smoking occasionally had the smallest number of EAs endorsing perceived risk. A greater proportion of EAs in the no use group viewed vaping cannabis regularly as having the most risk (63.6%), whereas the largest proportion of EAs in the smoking-only (64.6%) and multiple/other methods (47.2%) groups perceived dabbing regularly as having the most risk. ConclusionsThis work shows that EAs vary in perceptions of risk across methods of cannabis use and can inform potential directions for public health and policy efforts.

Direct and indirect effects of cannabis risk perceptions on cannabis use frequency

Background Perceived risk of harm associated with cannabis use has decreased in recent decades, particularly among emerging adults who show the highest prevalence of use. Cannabis-related protective behavioral strategies (PBS) are associated with lower cannabis use and fewer consequences; however, individuals who perceive using cannabis as low risk may use cannabis PBS less often. Therefore, using cross-sectional data, we examined the associations between perceived risk of harm associated with cannabis use, cannabis PBS, and cannabis use frequency. Method Participants were 146 emerging adults between the ages of 18–25 (56.2% female) who reported consuming cannabis at least 3 times/week and completed measures of past-month cannabis use, past three-month use of cannabis PBS, and perceived risk of harm associated with cannabis use. Path analyses examined direct and indirect effects of perceived risk of cannabis-related harm on cannabis frequency through cannabis PBS. Results Most (66.4%) participants reported no perceived risk of harm associated with occasional cannabis use, whereas 30.1% reported no perceived risk of harm associated with regular cannabis use. Findings indicated a significant indirect effect between perceived risk of harm and cannabis use frequency through cannabis PBS, b = −10.23, SE = 3.80, 95% CI [−17.67, −2.80], p = .007. Conclusions Among emerging adults who consume cannabis regularly, findings suggest that a greater perceived risk of cannabis-related harm is associated with decreased cannabis use frequency via increased use of cannabis PBS. Although future analyses evaluating causal mechanisms are needed, these findings have clinical implications for harm reduction interventions focused on cannabis use. Trial Registration: The parent study from which these data were drawn was preregistered at Clinical Trials.Gov NCT04187989.

State-Level Recreational Cannabis Legalization Is Not Differentially Associated with Cannabis Risk Perception Among Children: A Multilevel Regression Analysis.

Introduction: As more states pass recreational cannabis laws (RCLs) for adults, there is concern that increasing (and state-sanctioned) cannabis acceptance will result in a reduced perception of risk of harm from cannabis among children. We aimed to discover whether children in states with RCLs had decreased perception of risk from cannabis compared with children in states with illicit cannabis. Methods: We analyzed data from the multisite multistate Adolescent Brain and Cognitive Development Study to determine how the perception of cannabis harm among children (age at baseline: 9-10; N=10,395) changes over time in states with and without RCLs. Using multilevel modeling, we assessed survey responses from children longitudinally across 3 years, adjusting for state-, family-, and participant-level clustering and child-level factors, including demographics (sex, race, and socioeconomic status), religiosity, and trait impulsivity. Results: There was no significant main effect of state RCLs on perceived risk of cannabis use, and no differences in change over time by state RCLs, even after controlling for demographic factors and other risk (e.g., impulsivity) and protective (e.g., religiosity) factors. Conclusions: This analysis indicates that state-level RCLs are not associated with differential perception of cannabis risk among children, even after controlling for demographics, trait impulsivity, and religiosity. Future studies could assess how perception of risk from cannabis changes as children and adolescents continue to mature in states with and without RCLs.

Yet Again Conversations Matter: The Importance of Interpersonal Discussions, Educational Campaigns, and Advertising on Cannabis-Related Risk Perceptions, Attitudes, and Intentions in At-Risk Young Adults

ABSTRACT The present study seeks to evaluate the relationships between cannabis-related communication and outcomes of interest such as cannabis-related risk perceptions, attitudes, and behaviors among young adults. Young adults who were at risk for cannabis use were surveyed online in 2020. Results showed that exposure to online educational messages was associated with higher intentions of engaging in peer intervention, while exposure to online advertising was related to higher intention to use cannabis. Anti-cannabis interpersonal discussion was associated with increased risk perceptions, less favorable cannabis attitudes, and a higher likelihood of peer intervention. More pro-cannabis interpersonal discussion was associated with decreased risk perceptions, more favorable cannabis attitudes, higher use intention, and decreased likelihood of peer intervention. In addition, pro-cannabis interpersonal discussion mediated the relationship between exposure to advertising and cannabis risk perceptions, intentions to use cannabis, attitudes about cannabis, and the likelihood of peer intervention. In contrast, anti-cannabis interpersonal discussion mediated the relationship between exposure to educational messages online and cannabis risk perceptions and the likelihood of peer intervention. These findings underscore the need to regulate online cannabis marketing and the importance of investing in online education campaigns to increase public understanding of the risks associated with cannabis consumption in young adulthood.

Trends and Characteristics of Prenatal Cannabis Use in the U.S., 2002–2019

The prevalence of prenatal cannabis use has nearly doubled in the U.S. from 2002 to 2017. As cannabis legalization continues to expand, this study aimed to estimate the recent trends in the prevalence of cannabis use, cannabis dependence, and cannabis risk perceptions among U.S. pregnant people. The National Survey on Drug Use and Health (2002-2019) was designed to be representative of the U.S. civilian non-institutionalized population. The study sample included pregnant participants (aged 12-44 years; n=15,109). Cannabis consumption was defined as using cannabis at least once in the 30 days before assessment. Past 12‒month cannabis dependence was defined on the basis of the DSM-IV. Joinpoint regression was used to test for significant changes in the trends while controlling for age, race/ethnicity, and family income. Analyses were conducted between August 2021 and April 2022. No evidence of change in the prevalence of prenatal cannabis use was detected between 2016-2017 (5.8%) and 2018-2019 (4.7%) (prevalence difference= -1.1; 95% CI= -2.9, 0.7). The prevalence of cannabis dependence did not change significantly among pregnant people from 2002 to 2019. The percentage of pregnant people perceiving regular cannabis use (1-2 times/week) as a great risk remained stable from 2002 to 2007 (∼53%) and declined sharply after (27%). Three of 4 pregnant people in the U.S. do not characterize regular cannabis use as a great risk. As cannabis legalization increases, public health efforts are needed to raise awareness of the possible harms associated with cannabis use.

Effects of Risk Perception and Accessibility on Cannabis Use among Young Population in Spain: Findings from the 2016 National Survey (ESTUDES)

Background Cannabis use in the young population has undergone a significant increase in Europe. Empirical assessments of individual and contextual mediating variables in relation to cannabis use are informative for prevention actions and have yet to be conducted in Spain. Objectives: This study used the 2016 National Survey on Drug Use in Secondary Education in Spain (ESTUDES) to inform on potentially relevant cannabis prevention targets. We examined individual variables (sex, age, and cannabis risk perception), past 30-day legal and illicit substance use, substance-free activities, and contextual factors (perceived accessibility to cannabis) associated to past 30-day cannabis use. Methods: Data were drawn from 35,369 adolescents (% females: 50.1). Structural equation modeling (SEM) was implemented to identify predictors of cannabis use, and indirect paths were tested via bootstrapping to examine the mediating effects of cannabis risk perception and accessibility. Results: Demographics (male sex, higher age), and past 30-day tobacco, alcohol, and illicit substance use were associated with past 30-day cannabis use. Frequency of past-year engagement in hobbies and reading did also predict past 30-day cannabis use. The mediators worked on most of the relationships examined, except for hobbies and illegal substance use in the case of accessibility and reading and hobbies in the case of risk perception. Conclusions/importance: Cannabis use is more likely to emerge in the event of low risk perception and high accessibility. Lower frequency of past year reading and higher engagement in some hobbies that are often carried out alone represent risk factors, which could potentially influence prevention programs.

Driving under the influence of cannabis risk perceptions and behaviour: A population-based study in Ontario, Canada

Driving under the influence of cannabis (DUIC) is detrimental to road safety. Risk perception is a strong determinant of DUIC behaviour, yet little is known about the factors influencing DUIC risk perception in the general population. The objective of this study was to identify factors associated with risk perceptions of motor vehicle collision and legal consequences due to DUIC and examine whether these perceptions were associated with DUIC behaviour. Data were derived from the 2017 CAMH Monitor, a cross-sectional telephone survey of adults aged 18+ years in Ontario, Canada (n = 1813). Multivariable logistic regression analyses were performed. Approximately 90% of adults overall agreed that DUIC increases motor vehicle collision risk compared to 55% of those reporting past-year DUIC. Being male, less educated, and using cannabis at least monthly were associated with disagreeing that DUIC increases motor vehicle collision risk. Being male, young, and using cannabis at least monthly were associated with agreeing that DUIC is safer than driving under the influence of alcohol (DUIA). Being male and using cannabis less than monthly were associated with agreeing that the chances of getting caught for DUIC are higher than DUIA. Safety but not legal risk perceptions were associated with DUIC behaviour among cannabis-using drivers. Cannabis legalization provides a timely opportunity for DUIC prevention strategies. This study suggests that policymakers should target male cannabis users and highlight the safety risks of DUIC. Further research is needed to assess the effectiveness of prevention measures and the impact of cannabis legalization on DUIC perceptions and behaviour.

A prospective study of newly incident cannabis use and cannabis risk perceptions: Results from the United States Monitoring the Future study, 1976–2013

BackgroundA prevailing epidemiological theory about drug use occurrence among secondary school students is that trends in perceived risk of drug-related harms can drive use. If so, cannabis risk perceptions during one school year should predict newly incident cannabis use in the same school the following year. We aimed to study trends in incidence and epidemiological clustering of cannabis use among United States (US) 12th-graders, and a novel prediction that incidence in school-year ‘t’ is influenced by school-specific cannabis risk perceptions (CRP) of 12th-graders a year prior at ‘t-1’. MethodsUS schools sampled each year from 1976 to 2013 (∼130 schools per year) yielded an annual nationally representative sample of ∼15–16,000 12th-graders with questionnaire assessments. Analyses involved Alternating Logistic Regressions (ALR) to study trends in school-level clustering and slopes that estimate the degree to which CRP levels at ‘t-1’ might predict newly incident cannabis use at ‘t’. ResultsSchool-level CRP levels at ‘t-1’ predict newly incident cannabis use in the next year’s 12th-grade class. For each unit CRP increment, the next year’s class shows tangibly reduced incidence of starting to use cannabis (overall odds ratio, OR = 0.10; 95% CI: 0.03, 0.33). Within-school clustering of newly incident cannabis smoking also can be seen (e.g., pairwise odds ratio, PWOR = 1.11; 95% CI: 1.07, 1.15). ConclusionsProgrammatic manipulation of perceived risk in one year’s senior class via public health/school alliances might dampen the subsequent risk of newly incident cannabis use in the next year’s class.

A reciprocal effects analysis of cannabis use and perceptions of risk.

Adolescents and young adults increasingly view cannabis as a relatively safe drug. Perception of risk associated with cannabis use is correlated negatively with the prevalence of use, but the causal nature of this association is debated. The aim of this study is to quantitate the reciprocal associations between cannabis use and risk perception in a longitudinal panel of emerging adults. Observational study of longitudinal data from the Monitoring the Future longitudinal study using autoregressive cross-lagged panel analyses to investigate reciprocal associations between cannabis risk perception and frequency of past-year cannabis use. Surveys administered to 12th-grade students from the United States general population. A total of 9929 12th-grade students (mean age 18.0 years) who were surveyed initially during 2000-05 and follow-up data until approximately 23-24 years old (three waves; n=9929). Perception of risk association with cannabis use and frequency of past-year cannabis use. At baseline, 33% of the 12th-graders used cannabis in the past year versus 28% by the third follow-up; 83% believed that smoking cannabis regularly carried moderate or great risk versus 78% by the third follow-up. All cross-lagged paths in both directions were statistically significant (all P<0.001), consistent with reciprocal influences between cannabis use and risk perception. The negative association between past-year cannabis use and subsequent risk perception (standardized coefficient range-0.21 to -0.27) was stronger than that between risk perception and subsequent use (standardized coefficient range-0.08 to -0.11; confidence intervals did not overlap with those for the coefficients reported above). Similar results were obtained when the analysis was limited to those who had never used cannabis prior to baseline. Longitudinal associations between cannabis use and perception of risks from cannabis use are reciprocal in nature, with a stronger association between cannabis use and lower subsequent risk perception.

Population-level predictions from cannabis risk perceptions to active cannabis use prevalence in the United States, 1991–2014

IntroductionA mosaic of evidence links risk perceptions with drug use in adolescence, including population summaries to guide public health campaigns, as well as subject-specific estimates on preventing an adolescent's drug use by manipulating that individual's prior risk perceptions. We re-visit these issues with a public health perspective, asking whether population-level cannabis risk perceptions of school-attending adolescents at one grade level might predict cannabis use prevalence two and four grade levels later. MethodsFrom 1991 to 2014, each year's United States “Monitoring the Future” (MTF) study population included 8th-, 10th-, & 12th-graders. Two and four years later, statistically independent school samples of the same cohorts were drawn and assessed (n ~ 16,000/year). Population-level modeling estimated cannabis use prevalence at time “t” (12th-grade) regressed on that same cohort's cannabis risk perceptions as had been measured at time “t-4” (8th-grade) and time “t-2” (10th-grade). ResultsHigher cannabis risk perception levels for 10th-graders predict lower cannabis use prevalence when 10th-graders have become 12th-graders (β̂=−0.12), and higher cannabis risk perception levels of 8th-graders predict lower cannabis prevalence when 8th-graders have become 10th-graders (β̂=−0.27); p-values < 0.05. Across four-year spans, the prediction is null (p-value = 0.619). ConclusionsThis within-cohort across-grade population-level prediction prompts questions for drug prevention specialists, including “Would a relatively small upward shift in a local area population's appraisal of risk perceptions be followed, two years later, by reduced population prevalence of cannabis use?” Future randomized trial designs, health education, or prevention efforts focused on altering early adolescent cannabis risk perceptions might provide the most convincing and definitive evidence.

Predicting Teenage Beliefs Concerning the Harm Alcohol and Cannabis Use may do in Eight European Countries

Data are from the European School Survey Project on Alcohol and other Drugs (ESPAD) in eight countries (Sweden, United Kingdom, France, Malta, Slovenia, Hungary, Bulgaria, and the Czech Republic) in spring 2003. Two scales were constructed, measuring beliefs that alcohol and cannabis harm people. Relationships of these scales with measures of parental control, parental attitudes, respondent's own drug use, friend's drug use, and gender were assessed within each country. Both at the country and the individual level, subject's own drug use showed strong inverse relationships with risk perceptions. Parental control and parental attitudes also showed associations with risk perception but these seemed largely mediated by the parental influence on subject's own use and by choice of friends. In countries with low prevalence of drug use the extent to which the predictor variables accounted for risk perceptions was lowest. Also the predictor variables showed greater associations with cannabis risk perception than with alcohol risk perception. For cannabis the explained variance in risk of harm varied from 8.1% in Sweden to 30.4% in the Czech Republic. For alcohol harm this range was from 3.1% in Bulgaria to 15.1% in Malta.

Risk Perception and Cannabis Use in a Sample of Young Adults

Aim: To examine dimensions of cannabis risk perception among users and non‐users.Setting: University campus.Participants: Two hundred and thirty‐seven university students aged between 17 and 24 years.Measurement: Measures included the frequency of past and present cannabis use, and perceptions of the level of overall risk of various categories of use. Cannabis users were asked to rate the risk of harming themselves at their current level of use. Fifteen dimensions of cannabis risk perception were also assessed.Findings: Perceptions of risk varied across problem domains. Approximately 60% of respondents considered physical addiction to be a great risk for those using at least 2–3 times per week compared with 25% for legal problems. Adverse acute effects (particularly anxiety) were not considered to be a great risk by most of the sample.Conclusions: Risk perception varies considerably across problem domains, and users of cannabis do not necessarily perceive low personal risk. This is particularly relevant for the design of intervention programmes. It is recommended that referral information be readily available at universities for the proportion of students who feel personally vulnerable to risks associated with cannabis.