A psychometric evaluation of the Marijuana Problems Index among college students: Confirmatory factor analysis and measurement invariance by gender

Digital Interventions for Recreational Cannabis Use Among Young Adults: Systematic Review, Meta-Analysis, and Behavior Change Technique Analysis of Randomized Controlled Studies

BACKGROUND

The high prevalence of cannabis use among young adults poses substantial global health concerns due to the associated acute and long-term health and psychosocial risks. Digital modalities, including websites, digital platforms, and mobile apps, have emerged as promising tools to enhance the accessibility and availability of evidence-based interventions for young adults for cannabis use. However, existing reviews do not consider young adults specifically, combine cannabis-related outcomes with those of many other substances in their meta-analytical results, and do not solely target interventions for cannabis use.

OBJECTIVE

We aimed to evaluate the effectiveness and active ingredients of digital interventions designed specifically for cannabis use among young adults living in the community.

METHODS

We conducted a systematic search of 7 databases for empirical studies published between database inception and February 13, 2023, assessing the following outcomes: cannabis use (frequency, quantity, or both) and cannabis-related negative consequences. The reference lists of included studies were consulted, and forward citation searching was also conducted. We included randomized studies assessing web- or mobile-based interventions that included a comparator or control group. Studies were excluded if they targeted other substance use (eg, alcohol), did not report cannabis use separately as an outcome, did not include young adults (aged 16-35 y), had unpublished data, were delivered via teleconference through mobile phones and computers or in a hospital-based setting, or involved people with mental health disorders or substance use disorders or dependence. Data were independently extracted by 2 reviewers using a pilot-tested extraction form. Authors were contacted to clarify study details and obtain additional data. The characteristics of the included studies, study participants, digital interventions, and their comparators were summarized. Meta-analysis results were combined using a random-effects model and pooled as standardized mean differences.

RESULTS

Of 6606 unique records, 19 (0.29%) were included (n=6710 participants). Half (9/19, 47%) of these articles reported an intervention effect on cannabis use frequency. The digital interventions included in the review were mostly web-based. A total of 184 behavior change techniques were identified across the interventions (range 5-19), and feedback on behavior was the most frequently used (17/19, 89%). Digital interventions for young adults reduced cannabis use frequency at the 3-month follow-up compared to control conditions (including passive and active controls) by -6.79 days of use in the previous month (95% CI -9.59 to -4.00; P<.001).

CONCLUSIONS

Our results indicate the potential of digital interventions to reduce cannabis use in young adults but raise important questions about what optimal exposure dose could be more effective, both in terms of intervention duration and frequency. Further high-quality research is still needed to investigate the effects of digital interventions on cannabis use among young adults.

TRIAL REGISTRATION

PROSPERO CRD42020196959; https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=196959.

Associations Between Alcohol and Cannabis Use and Pain Among College Student-Athletes

Background: Pain motivates alcohol and cannabis use, with evidence that pain catastrophizing (i.e., ruminative exaggeration of pain) mediates these associations. Student-athletes represent a unique population who engage in riskier substance use, experience more substance-related consequences, and are more likely to develop chronic pain compared to non-athletes. Objectives: This study examined relationships between pain, catastrophizing, alcohol and cannabis use and consequences. Student-athletes from two Division I universities (N = 549; 51% female) completed a cross-sectional survey. Moderated mediation tested the conditional indirect effect of pain catastrophizing on associations between pain and alcohol- and cannabis- use and consequences, separately, with sex moderating the a and b paths. Results: There was a significant direct effect between pain and alcohol-related consequences (b = 0.11, p = .008). Pain and pain catastrophizing were positively associated in all four models (bs = 0.68-0.72, ps <.001), and this relationship was stronger among female than male athletes. No other direct or conditional indirect effects were observed. Conclusions: Student-athletes experiencing pain report more alcohol-related consequences, and pain catastrophizing may be particularly relevant for student-athletes with greater pain. Future research should examine other factors proposed by theoretical models, such as negative affect, while focusing on athletes with more significant pain (e.g., injured athletes).