[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100054054":3},{"organization":4,"armGroups":7,"interventions":25,"overallOfficials":76,"centralContacts":82,"locations":87,"responsibleParty":103,"collaborators":105,"id":109,"slug":110,"hasResults":111,"nctId":112,"briefTitle":113,"officialTitle":113,"acronym":31,"eligibilityCriteria":114,"healthyVolunteers":115,"sex":116,"minAge":117,"maxAge":31,"enrollmentInfo":118,"targetDuration":31,"studyType":121,"phases":122,"briefSummary":124,"conditions":125,"keywords":128,"overallStatus":133,"whyStopped":31,"lastUpdateSubmitDate":134,"lastUpdatePostDateStruct":135,"startDateStruct":138,"completionDateStruct":139,"leadSponsor":141,"locationsCount":142},{"fullName":5,"class":6},"University of North Carolina, Chapel Hill","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Cannabis warning messages","EXPERIMENTAL","Participants will view and rate 7 cannabis warning messages. The cannabis warning messages cover 11 different themes plus a control theme and were identified in a previous study activity.\n\nTheme 1: Constituents Theme 2: Cognitive Functioning Theme 3: Cardiovascular Health Theme 4: Motor Vehicle Crashes Theme 5: Dependence Theme 6: Psychosis and Schizophrenia Theme 7: Mental Health Theme 8: Reproductive Health Theme 9: Respiratory Health Theme 10: Edibles Theme 11: Cannabis Hyperemesis Syndrome Theme 12: Control",[13,14,15,16,17,18,19,20,21,22,23,24],"Behavioral: Constituents","Behavioral: Cognitive Functioning","Behavioral: Cardiovascular Health","Behavioral: Motor Vehicle Crashes","Behavioral: Dependence","Behavioral: Psychosis and Schizophrenia","Behavioral: Mental Health","Behavioral: Reproductive Health","Behavioral: Respiratory Health","Behavioral: Edibles","Behavioral: Cannabis Hyperemesis Syndrome","Behavioral: Control",[26,32,36,40,44,48,52,56,60,64,68,72],{"type":27,"name":28,"description":29,"armGroupLabels":30,"otherNames":31},"BEHAVIORAL","Constituents","Participants will view and rate a message about constituents.",[9],null,{"type":27,"name":33,"description":34,"armGroupLabels":35,"otherNames":31},"Cognitive Functioning","Participants will view and rate a message about cognitive functioning.",[9],{"type":27,"name":37,"description":38,"armGroupLabels":39,"otherNames":31},"Cardiovascular Health","Participants will view and rate a message about cardiovascular health.",[9],{"type":27,"name":41,"description":42,"armGroupLabels":43,"otherNames":31},"Motor Vehicle Crashes","Participants will view and rate a message about motor vehicle crashes.",[9],{"type":27,"name":45,"description":46,"armGroupLabels":47,"otherNames":31},"Dependence","Participants will view and rate a message about dependence.",[9],{"type":27,"name":49,"description":50,"armGroupLabels":51,"otherNames":31},"Psychosis and Schizophrenia","Participants will view and rate a message about psychosis and schizophrenia.",[9],{"type":27,"name":53,"description":54,"armGroupLabels":55,"otherNames":31},"Mental Health","Participants will view and rate a message about mental health.",[9],{"type":27,"name":57,"description":58,"armGroupLabels":59,"otherNames":31},"Reproductive Health","Participants will view and rate a message about reproductive health.",[9],{"type":27,"name":61,"description":62,"armGroupLabels":63,"otherNames":31},"Respiratory Health","Participants will view and rate a message about respiratory health.",[9],{"type":27,"name":65,"description":66,"armGroupLabels":67,"otherNames":31},"Edibles","Participants will view and rate a message about edibles.",[9],{"type":27,"name":69,"description":70,"armGroupLabels":71,"otherNames":31},"Cannabis Hyperemesis Syndrome","Participants will view and rate a message about cannabis hyperemesis syndrome.",[9],{"type":27,"name":73,"description":74,"armGroupLabels":75,"otherNames":31},"Control","Participants will view and rate a control message.",[9],[77,80],{"name":78,"affiliation":5,"role":79},"Sarah D Kowitt, PhD, MPH","PRINCIPAL_INVESTIGATOR",{"name":81,"affiliation":5,"role":79},"Leah M Ranney, PhD, MA",[83],{"name":78,"role":84,"phone":85,"phoneExt":31,"email":86},"CONTACT","919-974-4980","kowitt@unc.edu",[88],{"facility":89,"status":31,"city":90,"state":91,"zip":92,"country":93,"countryCode":94,"cosmosGeoPoint":95,"geoPoint":100,"contacts":101},"University of North Carolina at Chapel Hill","Chapel Hill","North Carolina","27514","United States","US",{"type":96,"coordinates":97},"Point",[98,99],-79.05584,35.9132,{"lat":99,"lon":98},[102],{"name":78,"role":84,"phone":85,"phoneExt":31,"email":86},{"type":104,"investigatorFullName":31,"investigatorTitle":31,"investigatorAffiliation":31,"oldNameTitle":31,"oldOrganization":31},"SPONSOR",[106],{"name":107,"class":108},"National Institute on Drug Abuse (NIDA)","NIH","100054054","developing-and-strengthening-cannabis-warnings-warning-message-testing-100054054",false,"NCT07699198","Developing and Strengthening Cannabis Warnings: Warning Message Testing","Inclusion Criteria:\n\n* Age 18 years of age and older\n* Live in the United States\n\nExclusion Criteria:\n\n* Age less than 18 years of age\n* Does not live in the United States",true,"ALL","18 Years",{"count":119,"type":120},1500,"ESTIMATED","INTERVENTIONAL",[123],"NA","The purpose of this activity is to identify promising cannabis warning messages from different themes. Participants will be adults who live in the United States, including both people who use cannabis and those who do not use cannabis. In an online within-subjects experiment, participants will be randomly assigned to view 7 cannabis warning messages from different themes developed as part of previous study activities. After viewing each cannabis warning message, participants will rate the message on awareness, clarity, believability, cognitive elaboration, perceived message effectiveness, and reactance. The survey will take 15-20 minutes.",[126,127],"Cannabis","Marijuana Use",[126,127,129,130,131,132],"Product Packaging","Product Labeling","Warnings","Health Communication","NOT_YET_RECRUITING","2026-07-08",{"date":136,"type":137},"2026-07-13","ACTUAL",{"date":136,"type":120},{"date":140,"type":120},"2026-11-30",{"name":5,"class":6},1]