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Completed

NCT Number: NCT03375840

Pictorial Warning Labels and Memory for Cigarette Health-risk Information Over Time

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. This trial tests memory for health risks immediately or after a six-week delay for US-representative adult smokers, US-representative teen smokers/vulnerable smokers, and Appalachian-representative adult smokers. In addition, the trial tests the effects of different warning label components and the consequences of memory for labels on risk perceptions and quit intentions.

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Key information

Conditions

Smoking Cessation Behavior Cigarette Smoking Health Behavior Smoking Smoking, Cigarette Tobacco Smoking Tobacco Use

Age range

14 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 19-65 years old (adult samples)
  • have smoked 100+ lifetime cigarettes (adult samples)
  • currently smoke "every day" or "some days." (adult samples)
  • 14-18 years old (teen sample)
  • have ever smoked a cigarette (teen sample)

Exclusion criteria

  • have not ever smoked a cigarette (all samples)

Treatment and study plan

text-only PWL

Behavioral

Control condition

low-emot PWL

Behavioral

Pictorial warning

high-emot PWL

Behavioral

Pictorial warning

Immediate posttest

Behavioral

delay posttest

Behavioral

Primary outcomes

  1. graphic warning label recall

    Time frame: immediately following last exposure or after 6-week delay

    free recall for risk information presented in labels (9 text boxes, 1 for each label; coded for exact or equivalent words)

  2. smoking risk recognition

    Time frame: immediately following last exposure or after 6-week delay

    Participants were subsequently shown twenty-six negative health effects and asked "Which of the following health effects were mentioned in the warnings we showed you?" and responded "Yes, I saw this health effect" or "No, I did not see this health effect." Fourteen risks were mentioned in the warnings (e.g., cancer, harms children, emphysema); six were risks of smoking not presented in the warnings (e.g., wrinkles, diabetes), and six were not risks of smoking (e.g., acne, thyroid problems).

Secondary outcomes

  1. smoking risk perceptions

    Time frame: immediately following last exposure or after 6-week delay

    participants completed several scale items about how much risk they perceived smoking posed to them (e.g., "Compared to the average nonsmoker your age, gender, and race, how would you rate your chances of": 1) "getting a life threatening illness because of smoking," 2) "getting lung cancer," and 3) "dying at a younger age than average" (-3 = Much lower, +3 = Much higher))

  2. quit intentions

    Time frame: immediately following last exposure or after 6-week delay

    participants' intentions to quit smoking

Sponsors and collaborators

Lead sponsor

Ohio State University

Other

Collaborators

  • University of Pennsylvania

Registry information

Important dates

Study start
2015
Primary completion
2016
Study completion
2016
First posted
Dec 18, 2017
Registry last updated
Dec 18, 2017

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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