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Developing and Strengthening Cannabis Warnings: Warning Message Testing

2026年10月1日 更新者: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.

研究概览

详细说明

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.

研究类型

介入性

注册 (实际的)

1750

阶段

  • 不适用

联系人和位置

本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。

学习地点

    • North Carolina
      • Chapel Hill、North Carolina、美国、27514
        • University of North Carolina at Chapel Hill

参与标准

研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

18年 及以上 (成人、年长者)

接受健康志愿者

是的

有资格学习的性别

全部

描述

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

学习计划

本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。

研究是如何设计的?

设计细节

  • 主要用途:预防
  • 分配:不适用
  • 介入模型:单组作业
  • 屏蔽:无(打开标签)

武器和干预

参与者组/臂
干预/治疗
实验性的: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

Participants will view and rate a message about constituents.

Participants will view and rate a message about cognitive functioning.

Participants will view and rate a message about cardiovascular health.

Participants will view and rate a message about motor vehicle crashes.

Participants will view and rate a message about dependence.

Participants will view and rate a message about psychosis and schizophrenia.

Participants will view and rate a message about mental health.

Participants will view and rate a message about reproductive health.

Participants will view and rate a message about respiratory health.

Participants will view and rate a message about edibles.

Participants will view and rate a message about cannabis hyperemesis syndrome.

Participants will view and rate a control message.

研究衡量的是什么?

主要结果指标

结果测量
措施说明
大体时间
Cognitive Elaboration
大体时间: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)

次要结果测量

结果测量
措施说明
大体时间
Perceived Message Effectiveness
大体时间: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)

其他结果措施

结果测量
措施说明
大体时间
Clarity
大体时间: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
大体时间: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
大体时间: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)

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

调查人员

  • 首席研究员:Sarah D Kowitt, PhD, MPH、University of North Carolina, Chapel Hill
  • 首席研究员:Leah M Ranney, PhD, MA、University of North Carolina, Chapel Hill

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2026年7月31日

初级完成 (实际的)

2026年8月27日

研究完成 (实际的)

2026年8月27日

研究注册日期

首次提交

2026年6月25日

首先提交符合 QC 标准的

2026年7月8日

首次发布 (实际的)

2026年7月13日

研究记录更新

最后更新发布 (实际的)

2026年10月6日

上次提交的符合 QC 标准的更新

2026年10月1日

最后验证

2026年9月1日

更多信息

与本研究相关的术语

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)?

是的

IPD 计划说明

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

IPD 共享时间框架

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

IPD 共享访问标准

Open Access

IPD 共享支持信息类型

  • 研究方案
  • 树液

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

不

此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.

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