Nonsmokers Helping Smokers Quit

NCT ID: NCT02010697

Last Updated: 2020-02-13

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 3125 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2013-12-31
• Study Completion Date: 2016-01-31

Brief Summary

This study examines whether nonsmokers can be mobilized to help smokers quit. We will test, via mail campaign, whether targeting nonsmokers can be equally effective in increasing smokers' quit rate as targeting smokers directly. The hypothesis is that both targeted interventions will lead to a higher quit rate than a control group, which receives one set of self-help materials. Each of the targeted intervention groups receives 10 mailings. Smoking status of all three groups will be measured at 3 and 7 months post randomization.

Detailed Description

This study examines the potential of enlisting nonsmokers to help smokers quit smoking. Nonsmokers are the majority of the society. If an intervention can be designed to mobilize nonsmokers to help smokers quit, then it has strong implications for increasing smoking cessation at the population level. The conventional approach in smoking cessation is to target smokers directly. This study aims to test whether targeting nonsmokers can be equally effective. The study employs a three arm randomized design, in which a smoker-nonsmoker pair in the same household will be randomized into one of the three groups. One group receives materials targeting the smoker in the household, one group receives materials targeting the nonsmoker, and the third group serve as a control group. The intervention consists of mailed materials which include postcards, informational materials, CDs, DVDs, coupons for cessation-related incentives such as nicotine patches, and links to secured websites. The mail campaign is augmented with brief phone calls to ensure receipt of mailings and to reinforce targeted messages.The mail campaign is augmented with brief phone calls to ensure receipt of mailings and to reinforce targeted messages. At 3 and 7 months post randomization, project staff contact all participants to assess their smoking status.

Conditions

Smoking Cessation

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Messages targeting nonsmokers

Messages targeting nonsmokers include 10 mailings for nonsmokers sent over 10 weeks. The mailed materials include postcards, informational materials, CDs, DVDs, coupons for cessation-related incentives such as nicotine patches, and links to secured websites. The mail campaign is augmented with brief phone calls to ensure receipt of mailings and to reinforce targeted messages.

Group Type: EXPERIMENTAL

Messages targeting nonsmokers

Intervention Type: BEHAVIORAL

Messages targeting smokers

Messages targeting smokers include 10 mailings for smokers sent over 10 weeks. The mailed materials include postcards, informational materials, CDs, DVDs, coupons for cessation-related incentives such as nicotine patches, and links to secured websites. The mail campaign is augmented with brief phone calls to ensure receipt of mailings and to reinforce targeted messages.

Group Type: EXPERIMENTAL

Messages targeting smokers

Intervention Type: BEHAVIORAL

Usual care

one time mailing with a self-help quit kit

Group Type: NO_INTERVENTION

No interventions assigned to this group

Interventions

Messages targeting nonsmokers

Intervention Type: BEHAVIORAL

Messages targeting smokers

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• 18 years or older
• A household with at least one smoker and one nonsmoker
• Valid contact information
• English proficiency, both speaking and reading

Exclusion Criteria

• Insufficient contact information

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

University of Oklahoma

OTHER

Sponsor Role: collaborator

University of California, San Diego

OTHER

Sponsor Role: lead

Responsible Party

Shu-Hong Zhu

Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Shu-Hong Zhu, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

University of California, San Diego

Locations

University of California San Diego

San Diego, California, United States

Countries

United States

Other Identifiers

U01CA154280

Identifier Type: NIH

Identifier Source: secondary_id

View Link

UO1 CA154280 IRB #130764

Identifier Type: -

Identifier Source: org_study_id