Pictorial Warning Labels & Memory for Relative & Absolute Cigarette Health-risk Information Over Time in Adult Smokers

Smoking Cessation Clinical Trial

Official title:

Pictorial Warning Labels & Memory for Relative & Absolute Cigarette Health-risk Information Over Time in Adult Smokers

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03499340
• Other study ID #: P50CA180908A2a-A
• Secondary ID: P50CA180908
• Status: Completed
• Phase: N/A
• First received: April 9, 2018
• Last updated: April 13, 2018
• Start date: July 10, 2017
• Est. completion date: October 3, 2017

Study information

• Verified date: April 2018
• Source: Ohio State University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Pictorial cigarette warning labels (PWLs) are thought to increase risk knowledge, but experimental research has not examined PWLs' longer term effects on memory for health risks. In this study, adult smokers are repeatedly exposed to text-only vs. low arousal graphic vs. high arousal graphic warning labels paired with numeric risk information. This study will allow the investigators to assess the extent to which reactions to warnings remain consistent over time and influence smoking risk perceptions and quit intentions. The investigators will also assess the impact of graphic images on memory for smoking risk information presented in absolute (a smoker's lifetime risk of getting a smoking related disease) versus relative (a smoker's risk of getting a smoking related disease, compared to the risk of non-smokers) formats.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 3213
• Est. completion date: October 3, 2017
• Est. primary completion date: October 3, 2017
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 19 Years to 64 Years

Eligibility

Inclusion Criteria:

• have smoked 100+ lifetime cigarettes

• currently smoke "every day" or "some days."

Exclusion Criteria:

• have not ever smoked a cigarette

Related Conditions & MeSH terms

• Smoking Cessation
• Smoking, Cigarette

Intervention

Behavioral:
• text-only PWL
control condition (no image)
• low arousal graphic PWL
pictorial warning
• high arousal graphic PWL
pictorial warning
• absolute risk
Percentage risk information for smoking-related diseases for smokers
• relative risk
Percentage risk information for smoking-related diseases for smokers and non-smokers

Locations

Country	Name	City	State
United States	The Ohio State University	Columbus	Ohio

Sponsors (2)

Lead Sponsor	Collaborator
Ohio State University	University of Pennsylvania

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	numeric risk recognition	Participants answered one multiple choice question about the numeric risk for smokers for each label (e.g., ____% of smokers die before age 85). For each question, there were four decoy responses.	measured immediately following last exposure
Secondary	numeric risk recognition	Participants answered one multiple choice question about the numeric risk for smokers for each label (e.g., ____% of smokers die before age 85). For each question, there were four decoy responses.	measured after 6-week delay
Secondary	relative risk recognition	Participants answered one multiple choice question about the numeric risk for smokers vs. nonsmokers for each health risk (e.g., a smoker is ____ as likely to die from heart disease as a nonsmoker). For each question, there were three decoy responses (e.g., for heart disease, response options were: "about as likely," "1.75 times," "4.1 times," "10.4 times").	measured immediately following last exposure
Secondary	relative risk recognition	Participants answered one multiple choice question about the numeric risk for smokers vs. nonsmokers for each health risk (e.g., a smoker is ____ as likely to die from heart disease as a nonsmoker). For each question, there were three decoy responses (e.g., for heart disease, response options were: "about as likely," "1.75 times," "4.1 times," "10.4 times").	measured after 6-week delay
Secondary	smoking risk perceptions	Participants completed several scale items about how much risk they perceived smoking posed to them (e.g., "If a person smokes at your age, how likely are they to get a life-threatening illness from smoking someday ?" [1=very unlikely; 5=extremely likely])	measured immediately following last exposure
Secondary	smoking risk perceptions	Participants completed several scale items about how much risk they perceived smoking posed to them (e.g., "If a person smokes at your age, how likely are they to get a life-threatening illness from smoking someday ?" [1=very unlikely; 5=extremely likely])	measured after 6-week delay
Secondary	quit intentions (for next 30 days)	Participants intentions to quit smoking; self-reported likelihood of smoking "within the next 30 days" (-3 = very unlikely, 3 = very likely)	measured immediately following last exposure
Secondary	quit intentions (for next 30 days)	Participants intentions to quit smoking; self-reported likelihood of smoking "within the next 30 days" (-3 = very unlikely, 3 = very likely)	measured after 6-week delay
Secondary	quit intentions (for next year)	Participants intentions to quit smoking; self-reported likelihood of smoking "within next year" (-3 = very unlikely, 3 = very likely)	measured immediately following last exposure
Secondary	quit intentions (for next year)	Participants intentions to quit smoking; self-reported likelihood of smoking "within next year" (-3 = very unlikely, 3 = very likely)	measured after 6-week delay
Secondary	risk recognition	Participants were given a list of 9 warnings and asked to select which ones they'd been previously exposed to	measured immediately following last exposure
Secondary	risk recognition	Participants were given a list of 9 warnings and asked to select which ones they'd been previously exposed to	measured after 6-week delay
Secondary	feelings about smoking	Participants completed several scale items about their feelings towards smoking (e.g., "How good or bad do you feel about smoking?" -2=very bad; +2=very good; "How much do you feel confused about the harms vs. benefits of smoking?" 0=not at all confused; 4=very confused)	measured immediately following last exposure
Secondary	feelings about smoking	Participants completed several scale items about their feelings towards smoking (e.g., "How good or bad do you feel about smoking?" -2=very bad; +2=very good; "How much do you feel confused about the harms vs. benefits of smoking?" 0=not at all confused; 4=very confused)	measured after 6-week delay