NCT02785484

Brief Summary

The purpose of this randomized controlled trial is to determine whether constituent disclosures on cigarette packs increase intentions to quit smoking. Previous studies have been informative, but they have evaluated candidate graphic warnings, not constituent disclosures. Furthermore, they typically expose participants to messages in controlled but artificial experimental settings for a short period of time, using much lower frequency and shorter duration of message exposure than found in the real world. This study addresses these issues by evaluating the impact of constituent disclosures by randomly assigning smokers to have their cigarette packs labeled with constituent disclosure messages or cigarette butt littering messages.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
784

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Sep 2016

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

April 4, 2016

Completed
2 months until next milestone

First Posted

Study publicly available on registry

May 27, 2016

Completed
3 months until next milestone

Study Start

First participant enrolled

September 1, 2016

Completed
6 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 1, 2017

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2017

Completed
Last Updated

June 8, 2017

Status Verified

June 1, 2017

Enrollment Period

6 months

First QC Date

April 4, 2016

Last Update Submit

June 6, 2017

Conditions

Keywords

Cigarette smokingSmokingTobacco use

Outcome Measures

Primary Outcomes (1)

  • Quit intentions

    The primary outcome is quit intentions measured at 4 weeks by survey.

    4 weeks

Secondary Outcomes (9)

  • Awareness of health effects from smoking cigarettes

    4 weeks

  • Awareness of cigarette smoke constituents

    4 weeks

  • Quit attempts

    Up to 4 weeks

  • Successful Quitting

    4 weeks

  • Forgoing a cigarette

    4 weeks

  • +4 more secondary outcomes

Study Arms (2)

Label with constituent disclosure message

EXPERIMENTAL
Other: Label with constituent disclosure message

Label with litter message

OTHER
Other: Label with litter message

Interventions

Labels with constituent disclosure messages that include text about chemicals in cigarette smoke and health effects of the chemicals will be applied to participants' cigarette packs on the right side (the Surgeon General's warning is on the left side). At the week 2 visit, participants' packs will be labeled with 1 of 3 disclosures selected at random; at the week 3 visit, they will get one of the 2 remaining disclosures selected at random, and at the week 4 visit they will get the remaining disclosure. Study investigators developed the text and design of these labels.

Label with constituent disclosure message

Labels with litter messages that include text about littering cigarette butts will be applied to participants' cigarette packs on the right side (the Surgeon General's warning is on the left side). At the week 2 visit, participants' packs will be labeled with 1 of 3 litter messages selected at random; at the week 3 visit, they will get one of the 2 remaining litter message selected at random, and at the week 4 visit they will get the remaining litter message. Study investigators developed the text and design of these labels.

Label with litter message

Eligibility Criteria

Age21 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Be 21 years or older
  • Have smoked at least 100 cigarettes in his or her lifetime
  • Currently smoke cigarettes every day or some days
  • Currently smoke at least 7 cigarettes per week, on average
  • Be able to read and speak English
  • Be able to use a computer to take surveys
  • Be able to attend 5 weekly appointments
  • Be able to bring in 8 days' worth of cigarettes to each of the first 4 weekly appointments

You may not qualify if:

  • Smokers who smoke exclusively roll-your-own cigarettes
  • Pregnant women
  • Smokers concurrently enrolled in any research studies about smoking or using other tobacco products
  • Smokers who live in the same household as someone who has enrolled in the study

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Ewald & Wasserman Research Consultants, LLC

San Francisco, California, 94108, United States

Location

Related Publications (1)

  • Brewer NT, Jeong M, Mendel JR, Hall MG, Zhang D, Parada H Jr, Boynton MH, Noar SM, Baig SA, Morgan JC, Ribisl KM. Cigarette pack messages about toxic chemicals: a randomised clinical trial. Tob Control. 2019 Jan;28(1):74-80. doi: 10.1136/tobaccocontrol-2017-054112. Epub 2018 Apr 13.

MeSH Terms

Conditions

Cigarette SmokingSmokingTobacco Use

Interventions

Drug Labeling

Condition Hierarchy (Ancestors)

Tobacco SmokingBehavior

Intervention Hierarchy (Ancestors)

Technology, PharmaceuticalInvestigative TechniquesDrug PackagingDrug IndustryManufacturing IndustryIndustryTechnology, Industry, and AgricultureProduct Packaging

Study Officials

  • Noel Brewer, PhD

    University of North Carolina, Chapel Hill

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 4, 2016

First Posted

May 27, 2016

Study Start

September 1, 2016

Primary Completion

March 1, 2017

Study Completion

March 1, 2017

Last Updated

June 8, 2017

Record last verified: 2017-06

Data Sharing

IPD Sharing
Will not share

Locations