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Developing and Strengthening Cannabis Warnings: Warning Message Testing

8 juli 2026 uppdaterad av: University of North Carolina, Chapel Hill
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.

Studieöversikt

Status

Har inte rekryterat ännu

Betingelser

Intervention / Behandling

Detaljerad beskrivning

The purpose of this activity is to identify promising cannabis warning messages from different themes.

Setting: An online survey of adults who live in the United States.

Participants: An estimated N=1500 adults who live in the United States, including both people who use cannabis and those who do not use cannabis. Participants will be recruited by Qualtrics Services. Participants who are eligible for the study will view a consent form as part of the survey and check a box to indicate that they agree to participate in the study. Once the participant has completed consent, they will be able to begin the survey.

Procedures: Participants will complete a within-subjects experiment in which they view and rate cannabis warning messages from different themes. Participants will be screened for inclusion and answer questions on demographic information and susceptibility to cannabis use. Participants will then 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. There will be a total of 11 warning themes plus control. After viewing and rating their assigned cannabis warning messages, participants will answer additional questions about cannabis risk perceptions and use behavior (if applicable), additional demographic information, and about their use of tobacco and alcohol. The survey will take 15-20 minutes.

Studietyp

Interventionell

Inskrivning (Beräknad)

1500

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

  • Namn: Sarah D Kowitt, PhD, MPH
  • Telefonnummer: 919-974-4980
  • E-post: kowitt@unc.edu

Studieorter

  • Förenta staterna
    • North Carolina
      • Chapel Hill, North Carolina, Förenta staterna, 27514
        • University of North Carolina at Chapel Hill
        • Kontakt:
          • Sarah D Kowitt, PhD, MPH
          • Telefonnummer: 919-974-4980
          • E-post: kowitt@unc.edu

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

  • Vuxen
  • Äldre vuxen

Tar emot friska volontärer

Ja

Beskrivning

Inclusion Criteria:

  • Age 18 years of age and older
  • Live in the United States

Exclusion Criteria:

  • Age less than 18 years of age
  • Does not live in the United States

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Förebyggande
  • Tilldelning: N/A
  • Interventionsmodell: Enskild gruppuppgift
  • Maskning: Ingen (Open Label)

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Cannabis warning messages

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.

Theme 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
Beteende: Constituents
Participants will view and rate a message about constituents.
Beteende: Cognitive Functioning
Participants will view and rate a message about cognitive functioning.
Beteende: Cardiovascular Health
Participants will view and rate a message about cardiovascular health.
Beteende: Motor Vehicle Crashes
Participants will view and rate a message about motor vehicle crashes.
Beteende: Dependence
Participants will view and rate a message about dependence.
Beteende: Psychosis and Schizophrenia
Participants will view and rate a message about psychosis and schizophrenia.
Beteende: Mental Health
Participants will view and rate a message about mental health.
Beteende: Reproductive Health
Participants will view and rate a message about reproductive health.
Beteende: Respiratory Health
Participants will view and rate a message about respiratory health.
Beteende: Edibles
Participants will view and rate a message about edibles.
Beteende: Cannabis Hyperemesis Syndrome
Participants will view and rate a message about cannabis hyperemesis syndrome.
Beteende: Control
Participants will view and rate a control message.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Cognitive Elaboration
Tidsram: Baseline (one time online survey)
A one item measure of cognitive elaboration to assess how much a message makes the participant think about the health risks of cannabis. Response options are on a 5-point scale from 5='A great deal' to 1= 'Not at all', with higher scores indicating higher cognitive elaboration.
Baseline (one time online survey)

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Perceived Message Effectiveness
Tidsram: Baseline (one time online survey)
This survey item assesses perceived message effectiveness in terms of how concerned the message makes the participant feel about the health effects of using cannabis. Response options are on a 5-point scale from 5='A great deal' to 1='Not at all' with higher scores indicating higher perceived message effectiveness.
Baseline (one time online survey)

Andra resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Clarity
Tidsram: Baseline (one time online survey)
This survey item assesses the extent to which a participant feels that the message is clear. Response options are on a 5-point scale from 5='Very clear' to 1='Not clear at all' with higher scores indicating that a message is more clear.
Baseline (one time online survey)
Believability
Tidsram: Baseline (one time online survey)
This survey item assesses the extent to which a participant feels that the message is believable. Response options are on a 5-point scale from 5='Very believable' to 1='Not at all believable' with higher scores indicating that a message is more believable.
Baseline (one time online survey)
Reactance
Tidsram: Baseline (one time online survey)
This survey item assesses reactance in terms of how much a participant is annoyed by the message. Response options are on a 5-point scale from 5='A great deal' to 1='Not at all' with higher scores indicating higher reactance to the message.
Baseline (one time online survey)

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

University of North Carolina, Chapel Hill

Samarbetspartners

National Institute on Drug Abuse (NIDA)

Utredare

  • Huvudutredare: Sarah D Kowitt, PhD, MPH, University of North Carolina, Chapel Hill
  • Huvudutredare: Leah M Ranney, PhD, MA, University of North Carolina, Chapel Hill

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Beräknad)

13 juli 2026

Primärt slutförande (Beräknad)

30 november 2026

Avslutad studie (Beräknad)

30 november 2026

Studieregistreringsdatum

Först inskickad

25 juni 2026

Först inskickad som uppfyllde QC-kriterierna

8 juli 2026

Första postat (Faktisk)

13 juli 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

13 juli 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

8 juli 2026

Senast verifierad

1 juni 2026

Mer information

Termer relaterade till denna studie

Nyckelord

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • 24-1616
  • R01DA058003 (U.S.S. NIH-anslag/kontrakt)

Plan för individuella deltagardata (IPD)

Planerar du att dela individuella deltagardata (IPD)?

JA

IPD-planbeskrivning

A de-identified version of individual participant data will be shared through the UNC Dataverse

Tidsram för IPD-delning

The dataset will be available after data collection and analysis and will remain available for 10 years

Kriterier för IPD Sharing Access

Open Access

IPD-delning som stöder informationstyp

  • STUDY_PROTOCOL
  • SAV

Läkemedels- och apparatinformation, studiedokument

Studerar en amerikansk FDA-reglerad läkemedelsprodukt

Nej

Studerar en amerikansk FDA-reglerad produktprodukt

Nej

Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .

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