An observational study in Smoking (Tobacco) Addiction, Smoking ( Cigarette) and Tobacco, sponsored by University of Colorado, Denver. Recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-05-15.
Sponsored by University of Colorado, Denver · Observational
Smoking is the leading preventable cause of death in the United States, and quitting is especially difficult for couples who both smoke. When both partners smoke, they are less likely to quit successfully and more likely to relapse compared to people whose partner does not smoke. Research suggests that the way romantic partners interact and support each other during a quit attempt can make a real difference - but researchers do not yet know enough about what kinds of support actually help.
This study examines a concept called "communal coping," which refers to when partners treat a shared health challenge - like quitting smoking - as something they are facing together as a team rather than as separate individuals. Researchers believe that couples who approach quitting this way may have better outcomes.
To study this, researchers will ask both members of dual-smoking couples to complete brief daily surveys over two weeks while making a quit attempt. These surveys will track how partners support (or discourage) each other's quitting efforts on a day-to-day basis, along with cigarette use, cravings, and stress. This will help researchers understand which relationship patterns are most helpful for quitting, and identify specific targets for future couples-based smoking cessation programs.
1,509 studies on the registry are indexed under Smoking; 193 are open to participants now.
This study's planned enrollment of 250 is above the median of 150 across 301 observational studies indexed under Smoking.
Browse Smoking studies →University of Colorado, Denver is the lead sponsor of 1,543 studies on the registry; 317 are open to participants now.
Of its 147 completed or terminated interventional studies of FDA-regulated products, 92 (63%) have results posted.
Counted across the registry records on this site, refreshed daily.
Dual-smoking couples residing in the United States
Inclusion Criteria:
Self-report of smoking abstinence
Participants will report how many cigarettes they smoked (or didn't smoke) in their daily diary surveys.
Time frame: Daily for the first two weeks of the study period, and in the follow-up survey two weeks later.
Concentration of carbon monoxide found in lungs.
Participants will use a carbon monoxide breathalyzer and report the results in their daily diary surveys.
Time frame: Daily for the first two weeks of the study.
Plan to share: No
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