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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Secondhand smoke Clear all
Completed Phase 3 Interventional

Telephone Counseling for Pregnant Smokers

NCT02144883
View directory record Official record
Conditions
Smoking
Interventions
Telephone counseling, Self-help materials
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
1,173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2004
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Feb 12, 2020 · Synced Sep 26, 2026, 3:03 AM EDT
Recruiting Phase 4 Interventional

Secondhand Tobacco Smoke and Cardiovascular Disease

NCT04715568
View directory record Official record
Conditions
Cardiovascular Diseases, Hypertension
Interventions
Losartan, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
40 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cardiovascular Assessment of the Effects of Tobacco and Nicotine Delivery Products

NCT01964807
View directory record Official record
Conditions
Adverse Effect of Other Agents Primarily Affecting the Cardiovascular System, Initial Encounter
Interventions
Cigarette, NIDA test type with 16.6 mg nicotine, Cigarette, NIDA test type with <0.45 mg nicotine, Electronic cigarette with 18 mg/ml nicotine, Electronic Cigarette with no nicotine, Moist snuff, Sham Smoking, Secondhand cigarette smoke (SHS), Conditioned, filtered air, Sham Moist Snuff
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 50 Years
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 26, 2021 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional

Reducing Environmental Tobacco Smoke in Neonatal Intensive Care Unit (NICU) Infants' Homes

NCT00670280
View directory record Official record
Conditions
Infant Environmental Tobacco Smoke Exposure
Interventions
Motivational Interviewing intervention, Usual Care, Usual Care - Reduced Measurement
Behavioral
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
12 Years and older
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 5, 2016 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Supporting Smoke-Free Policy Compliance in Public Housing

NCT05016505
View directory record Official record
Conditions
Smoking, Smoking Cessation, Smoking Reduction, Smoking Behaviors
Interventions
Reduction (relocation and reduction of personal smoking) and cessation, Resident Endorsement
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
405 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

OCAST Cessation Study

NCT01921439
View directory record Official record
Conditions
Tobacco Smoking Behavior, Cigarette Smoking Behavior, Second Hand Tobacco Smoke, Tobacco Use Cessation
Interventions
Personalized Feedback
Behavioral
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 65 Years
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 10, 2017 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Testing Different Anti-smoking Messages Among Chinese Young Adult Smokers and Nonsmokers

NCT06730646
View directory record Official record
Conditions
Smoking Prevention
Interventions
Health effects, Tobacco industry manipulation, Secondhand smoke, Mentral health, Social acceptability, Control
Behavioral
Lead sponsor
Georgia State University
Other
Eligibility
18 Years to 25 Years
Enrollment
1,541 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 13, 2025 · Synced Sep 26, 2026, 3:03 AM EDT
Not listed Phase 2 Interventional

Healthy Outcomes of Pregnancy Education

NCT00381823
View directory record Official record
Conditions
Environmental Tobacco Smoke Exposure, Depression, Partner Abuse, Tobacco Smoking
Interventions
Cognitive Behavioral Therapy
Behavioral
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years and older · Female only
Enrollment
1,750 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2004
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Sep 28, 2006 · Synced Sep 26, 2026, 3:03 AM EDT
Recruiting Phase 4 Interventional

Modifying Progesterone and Estradiol Levels to Prevent Postpartum Cigarette Smoking Relapse and Reduce Secondhand Smoke Exposure in Infants and Children

NCT04783857
View directory record Official record
Conditions
Smoking, Smoking Cessation, Smoking Reduction
Interventions
Progesterone 200 MG Oral Capsule
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
171 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Environmental Emissions From Electronic Cigarettes and Tobacco-Burning Cigarettes

NCT02185898
View directory record Official record
Conditions
Smoking
Interventions
Leading U.S. non-menthol cigarette, Leading U.S. menthol cigarette, Electronic cigarette #1, Electronic cigarette #2, Electronic cigarette #3, U.S. Market-sample electronic cigarettes
Other
Lead sponsor
R.J. Reynolds Vapor Company
Industry
Eligibility
21 Years to 99 Years
Enrollment
71 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Stockbridge, Georgia
Source: ClinicalTrials.gov public record
Updated May 31, 2018 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Results available

Kids Safe and Smokefree (KiSS)

NCT01745393
View directory record Official record
Conditions
Second Hand Tobacco Smoke, Nicotine Dependence
Interventions
Clinic Quality Improvement + Behavioral Counseling, Clinic Quality Improvement + Attention Control
Behavioral
Lead sponsor
Temple University
Other
Eligibility
18 Years and older
Enrollment
327 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
4
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 7, 2018 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Comparing Types of Implementation of a Shared Decision Making Intervention

NCT02047929
View directory record Official record
Conditions
Asthma
Interventions
Asthma Shared Decision Making (SDM) Toolkit
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
1 Year and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 21, 2022 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Improving Household Air Quality in Homes With Children

NCT01634334
View directory record Official record
Conditions
Lung Diseases, Asthma
Interventions
Real-Time Intervention, Usual Education
Behavioral
Lead sponsor
San Diego State University
Other
Eligibility
18 Years and older
Enrollment
298 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Sep 26, 2026, 3:03 AM EDT
Active, not recruiting Phase 4 Interventional

Secondhand Smoke Respiratory Health Study

NCT02797275
View directory record Official record
Conditions
Secondhand Smoke, Air Trapping, Tobacco, Airflow Limitation, Hyperinflation, Obstructive Lung Disease
Interventions
Albuterol, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
40 Years to 80 Years
Enrollment
107 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Reducing Tobacco Exposures Among African American Women and Children

NCT03476837
View directory record Official record
Conditions
Tobacco Use, Second Hand Tobacco Smoke
Interventions
Treatment, Control
Behavioral
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years to 50 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 26, 2026, 3:03 AM EDT
Completed No phase listed Observational

The Feasibility of Text Messaging to Assess Secondhand Smoke Exposure Among Youngsters With Cancer or Sickle Cell Disease

NCT01591187
View directory record Official record
Conditions
Cancer, Sickle Cell Disease
Interventions
Text messaging, Questionnaire, Interviews
Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
10 Years to 17 Years
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 4, 2015 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Smoke-free Home Intervention in Permanent Supportive Housing

NCT04855357
View directory record Official record
Conditions
Smoking Cessation, Second Hand Tobacco Smoke
Interventions
Resident counselling, Staff Training
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
452 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional

The Adjunctive Use of Lavender and Peppermint Essential Oils

NCT04934969
View directory record Official record
Conditions
Joint Diseases
Interventions
Adjunctive use of lavender and peppermint essential oils
Dietary Supplement
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 10, 2024 · Synced Sep 26, 2026, 3:03 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Secondhand Effects of Hookah (i.e., Waterpipe) Smoke and Aerosol

NCT04661683
View directory record Official record
Conditions
Hookah Smoking, Secondhand Aerosol, Vascular Stiffness, Vaping
Interventions
Combustible Hookah Smoke, Electronic Hookah Aerosol, Clean Room Air
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 49 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Novel Methods to Reduce Children's Secondhand Smoke Exposure II

NCT01896518
View directory record Official record
Conditions
Secondhand Smoke
Interventions
Nicotine polacrilex, Tobacco lozenge
Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 65 Years
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Anxiety Reduction During Office Procedural Medicine Using Aromatherapy

NCT04260399
View directory record Official record
Conditions
Anxiety, Anxiety State, Procedural Anxiety
Interventions
Lavender Aromatherapy, Placebo Aromatherapy
Other
Lead sponsor
Loyola University
Other
Eligibility
18 Years to 100 Years · Female only
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated May 27, 2021 · Synced Sep 26, 2026, 3:03 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effects of Secondhand Smoke on Flight Attendant Health

NCT01639235
View directory record Official record
Conditions
Cardiopulmonary Disease
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
592 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2020
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 27, 2021 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Phase 2 Interventional

Prevention of Environmental Tobacco Smoke Exposure in Children 0-12 Months Old

NCT00340106
View directory record Official record
Conditions
Environmental Tobacco Smoke (ETS)
Interventions
Counseling
Behavioral
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years and older · Female only
Enrollment
375 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
2
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 26, 2026, 3:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Project CASA in Promoting Smoke-Free Indoor Air Policy in Mexican American Households

NCT00850954
View directory record Official record
Conditions
Cigarette Smoker, Current Smoker, Currently Living With Smoker
Interventions
Informational Intervention, Smoking Cessation Intervention, Survey Administration
Other · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
168 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced Sep 26, 2026, 3:03 AM EDT