[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"trial:NCT07701304":3,"trial-entities:NCT07701304":84,"trial-summary:NCT07701304":88},{"id":4,"nct_id":4,"org_study_id":5,"brief_title":6,"official_title":7,"overall_status":8,"completion_date":9,"status_verified_date":10,"last_update_date":11,"start_date":12,"sponsor_name":13,"lead_sponsor_class":14,"has_dmc":15,"brief_summary":16,"detailed_description":17,"conditions":18,"keywords":22,"study_type":28,"primary_purpose":29,"phases":30,"enrollment_info":32,"interventions":35,"primary_outcomes":42,"secondary_outcomes":49,"sex":50,"minimum_age":51,"maximum_age":52,"healthy_volunteers":15,"eligibility_criteria":53,"std_ages":57,"locations":60,"central_contacts":76,"overall_officials":79,"references":82,"see_also_links":83},"NCT07701304","17276","Testing Warning Labels for Retail Cannabis Products Using a Discrete Choice Experiment","Developing and Testing Warning Labels for Retail Cannabis Products","RECRUITING","2026-12-31","2026-07","2026-07-27","2026-05-19","University of Oklahoma","OTHER",false,"This discrete choice experiment (DCE) study aims to address gaps in cannabis packaging regulatory research by testing how variations in cannabis packaging and health warning design impact reactions to packaging and intentions about cannabis use. The goal of this work is to identify the most effective combination of health warning features to improve consumer awareness of cannabis health risks. Establishing criteria for cannabis products in the US is critical because inconsistent state guidelines have resulted in contradictory policies in legal retail states, arguably leading to increased hazardous use and failure to meet public health standards. The contributions of this study's outcomes are expected to be significant because they will benefit public health as cannabis becomes available in legal retail markets and regulatory and governmental agencies seek effective ways to communicate cannabis risks to the public.","The DCE will be conducted via a self-administered online questionnaire, with inclusion criteria assessed before assignment to choice set conditions. Participants will be residents of legal-retail cannabis use states, able to legally purchase cannabis (21 or older), who have used cannabis in the past 30 days (i.e., current use). Frequency of cannabis use (i.e., monthly, weekly, daily), mode (e.g., flower, vape, etc.), and dose (i.e., THC level) will be measured through self-report. Inclusion criteria are reported using cannabis (any mode) in the past 30 days. Consented participants will be presented with descriptions of cannabis packaging attributes and an example choice set to become familiar with DCE tasks. Participants will be asked to imagine the cannabis products in the DCE as the only choices they have available to them \"in the near future\" and to evaluate images within this scenario. Participants will be randomly assigned to view 16 choice sets. To optimize the evaluation of preferences and reduce respondent burden, we will assign contrasting labels to \"choice sets,\" each of which will include 4 images of products in such a way that each attribute level appears an equal number of times in combination with all other attribute levels. Presentation order of the 16 choice sets will be randomized within and across choice sets to minimize ordering effects. Participants will view each choice set for as long as they wish. After evaluating choice sets, participants will complete a recall task to assess retention of health warning information and will be provided a debrief page with information about substance use and resources for seeking help with substance use.",[19,20,21],"Cannabis Use","Risk Perception","Decision Making",[23,24,25,26,27],"Cannabis warning labels","Discrete choice experiment","Risk perception","Cannabis use","Health communication","INTERVENTIONAL","PREVENTION",[31],"NA",{"count":33,"type":34},450,"ESTIMATED",[36],{"type":37,"name":38,"description":39,"armGroupLabels":40},"BEHAVIORAL","Discrete choice experiment (DCE) survey-experiment","A discrete choice experiment (DCE) consisting of 16 distinct choice sets. Each choice set presents combinations of the following attributes: 1) Cannabis package style: 1) \"Standardized\" plain package, 2) plain package with brand logo and fonts, 3) brand color background with brand logo and fonts, and 4) fully branded with brand imagery, brand logo, and brand descriptors and fonts. Branding type: 1) Adventure brand vs. 2) Earthy brand. Health warning size: 1) Small (20% of packaging surface) - health warnings use currently mandated warning language from multiple jurisdictions vs. 2) Large (40% of packaging surface) - health warnings use currently mandated warning language from multiple jurisdictions. Product THC content: 1) Low THC vs. 2) High THC. Product type: 1) Joints, 2) Vape, 3) Edibles, and 4) Drinks. Participants will rate all combinations of product attributes.",[41],"Discrete choice experiment (DCE) cohort",[43,47],{"measure":44,"description":45,"timeFrame":46},"Risk perceptions about cannabis products","Binary measure using best-worst scaling. For each question, participants will also have the option of indicating none of the above\u002Fopt-out as a response. For each choice set, the statement selected as the best option will be coded using a value of 1, and the worst will be coded as -1. The remaining statements in that set will be coded as 0. If the participant selects none of the above, all statements in that choice set will be assigned a value of 0.","At the time of survey completion (approximately 15 minutes)",{"measure":48,"description":45,"timeFrame":46},"Cannabis product use intentions",[],"ALL","21 Years",null,{"inclusion":54,"exclusion":55,"raw_text":56},[],[],"Eligibility for participation includes: 1) being 21 years of age or older, 2) being able to speak and understand English, 3) self-reported having consumed cannabis in the last 30 days (any mode, e.g., flower, vape, edible, etc.), and 4) residing in a U.S. state or jurisdiction where retail (i.e., non-medical) cannabis use is legal.",[58,59],"ADULT","OLDER_ADULT",[61],{"facility":62,"status":8,"city":63,"state":64,"zip":65,"country":66,"contacts":67,"geoPoint":73},"University of OKlahoma","Oklahoma City","Oklahoma","73104","United States",[68],{"name":69,"role":70,"phone":71,"email":72},"Zachary Massey, PhD","CONTACT","405-271-6872","zachary-massey@ou.edu",{"lat":74,"lon":75},35.46756,-97.51643,[77],{"name":69,"role":70,"phone":71,"email":78},"Zachary-Massey@ou.edu",[80],{"name":69,"affiliation":13,"role":81},"PRINCIPAL_INVESTIGATOR",[],[],{"nct_id":4,"conditions":85,"biomarkers":87},[86],"Cannabis misuse",[],{"nct_id":4,"found":89,"summary":90,"prompt_version":100},true,{"design":91,"status":92,"heading":93,"summary":94,"follow_up":95,"word_count":96,"commitments":97,"compensation":98,"drugs_mentioned":99},"This is an interventional study involving a discrete choice experiment (DCE) survey. Approximately 450 participants will be randomly assigned to view different combinations of cannabis packaging and warning labels.","completed","Testing Warning Labels for Retail Cannabis Products","This study is testing different designs for warning labels on retail cannabis products. We want to understand how variations in cannabis packaging and health warnings affect people's reactions and their intentions to use cannabis. The goal is to find the most effective health warning features to help consumers understand the risks of cannabis. You may be able to join if you are 21 or older, speak English, have used cannabis in the last 30 days, and live in a U.S. state where retail cannabis is legal. We are looking for about 450 participants. The study is currently unclear on its recruitment status.","Your risk perceptions and cannabis product use intentions will be measured at the time of survey completion (approximately 15 minutes).",102,"You will complete a self-administered online questionnaire, which is expected to take about 15 minutes.","Not stated in the trial record.",[],"v2"]