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| ID | Type | Description | Link |
|---|---|---|---|
| R01DA058003 | U.S. NIH Grant/Contract | View source |
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| Name | Class |
|---|---|
| National Institute on Drug Abuse (NIDA) | NIH |
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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.
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 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. 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 |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Constituents | Behavioral | Participants will view and rate a message about constituents. |
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| Measure | Description | Time Frame |
|---|---|---|
| Cognitive Elaboration | 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) |
| Measure | Description | Time Frame |
|---|---|---|
| Perceived Message Effectiveness | 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) |
| Measure | Description | Time Frame |
|---|---|---|
| Clarity | 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 |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Sarah D Kowitt, PhD, MPH | Contact | 919-974-4980 | kowitt@unc.edu |
| Name | Affiliation | Role |
|---|---|---|
| Sarah D Kowitt, PhD, MPH | University of North Carolina, Chapel Hill | Principal Investigator |
| Leah M Ranney, PhD, MA | University of North Carolina, Chapel Hill | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of North Carolina at Chapel Hill | Chapel Hill | North Carolina | 27514 | United States |
A de-identified version of individual participant data will be shared through the UNC Dataverse
The dataset will be available after data collection and analysis and will remain available for 10 years
Open Access
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| Cognitive Functioning | Behavioral | Participants will view and rate a message about cognitive functioning. |
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| Cardiovascular Health | Behavioral | Participants will view and rate a message about cardiovascular health. |
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| Motor Vehicle Crashes | Behavioral | Participants will view and rate a message about motor vehicle crashes. |
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| Dependence | Behavioral | Participants will view and rate a message about dependence. |
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| Psychosis and Schizophrenia | Behavioral | Participants will view and rate a message about psychosis and schizophrenia. |
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| Mental Health | Behavioral | Participants will view and rate a message about mental health. |
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| Reproductive Health | Behavioral | Participants will view and rate a message about reproductive health. |
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| Respiratory Health | Behavioral | Participants will view and rate a message about respiratory health. |
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| Edibles | Behavioral | Participants will view and rate a message about edibles. |
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| Cannabis Hyperemesis Syndrome | Behavioral | Participants will view and rate a message about cannabis hyperemesis syndrome. |
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| Control | Behavioral | Participants will view and rate a control message. |
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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 | 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) |
| ID | Term |
|---|---|
| D002189 | Marijuana Abuse |
| D000074609 | Marijuana Use |
| ID | Term |
|---|---|
| D019966 | Substance-Related Disorders |
| D064419 | Chemically-Induced Disorders |
| D001523 | Mental Disorders |
| D001519 | Behavior |
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| ID | Term |
|---|---|
| D000085542 | Functional Status |
| D008603 | Mental Health |
| D060728 | Reproductive Health |
| ID | Term |
|---|---|
| D000203 | Activities of Daily Living |
| D012046 | Rehabilitation |
| D006296 | Health Services |
| D005159 | Health Care Facilities Workforce and Services |
| D006304 | Health Status |
| D003710 | Demography |
| D015991 | Epidemiologic Measurements |
| D011634 | Public Health |
| D004778 | Environment and Public Health |
| D006262 | Health |
| D011154 | Population Characteristics |
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