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Showing 1–24 of 103 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Telephone quitline Clear all
Completed Not applicable Interventional

Effectiveness of Smoking-cessation Interventions for Urban Hospital Patients

NCT01363245
View directory record Official record
Conditions
Smoking Cessation
Interventions
Telephone Counseling, Fax-to-quit
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
1,618 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 1, 2015 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Improving the Reach & Effectiveness of Smoking Cessation Services Targeted to Veterans Living With HIV

NCT04505371
View directory record Official record
Conditions
HIV Infections, Smoking, Smoking Cessation
Interventions
Wellness Intervention for Smokers with HIV
Behavioral
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years and older
Enrollment
235 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional

Comparative Effectiveness of Two Tobacco Cessation Interventions for Employees of Partners HealthCare, Inc.

NCT02601521
View directory record Official record
Conditions
Smoking Cessation, Tobacco Use Disorder
Interventions
Internal tobacco coach, External tobacco coach
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
106 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 23, 2021 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Lombardi Comprehensive Cancer Center/Legacy Pilot Study to Reduce Adverse Smoking Outcomes in the Context of Lung Cancer Screening

NCT02267096
View directory record Official record
Conditions
Smoking, Lung Cancer
Interventions
Telephone Counseling, Minimal Treatment
Behavioral
Lead sponsor
Georgetown University
Other
Eligibility
55 Years to 80 Years
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
3
States / cities
Washington D.C., District of Columbia • Burlington, Massachusetts • Hackensack, New Jersey
Source: ClinicalTrials.gov public record
Updated Oct 18, 2016 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tobacco Treatment Outreach to Reduce Disparities for Primary Care Populations

NCT01156610
View directory record Official record
Conditions
Smoking, Smoking Cessation
Interventions
Tobacco Treatment
Behavioral
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
706 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 5, 2014 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional

Proactive Care Coordination for Cancer Survivors Who Smoke

NCT02723656
View directory record Official record
Conditions
Cancer
Interventions
Online Referral NYS Quitline, Tobacco cessation counseling and coordination of cessation medications
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
581 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 10, 2018 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

A Brief Dental Office Intervention With Tobacco Quitline

NCT00273156
View directory record Official record
Conditions
Smoking, Nicotine Dependence
Interventions
Telephone quitline
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 22, 2013 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Phase 4 Interventional Results available

Health Systems Reach Interventions Project

NCT04199117
View directory record Official record
Conditions
Smoking, Cigarette, Smoking Cessation
Interventions
Varenicline, Combination nicotine patch and nicotine mini-lozenge treatment, Monetary incentives for initiating treatment, Automated tailored outreach, Care management, Wisconsin Tobacco Quit Line referral, Primary care provider referral, Untailored outreach, Multiple smoking cessation coaching calls
Drug · Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional Results available

EHR-Based and Fax-Based Referral to a Tobacco Quitline: A Comparative Study

NCT02735382
View directory record Official record
Conditions
Tobacco Use Cessation, Tobacco Smoking
Interventions
Tobacco quitline EHR referral, Tobacco quitline Fax referral
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Not listed
Enrollment
14,930 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 2, 2019 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional Results available

Telephone Care Coordination for Smokers in VA Mental Health Clinics

NCT00724308
View directory record Official record
Conditions
Smoking
Interventions
Telephone Care Coordination, Telephone Care Coordination with state Quitline
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
577 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 16, 2020 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional Results available

Comparative Effectiveness of Post-Discharge Strategies for Hospitalized Smokers

NCT01714323
View directory record Official record
Conditions
Cigarette Smoking, Tobacco Smoking, Tobacco Use Disorder
Interventions
Sustained Care, Standard Care
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
1,359 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
3
States / cities
Boston, Massachusetts • Salem, Massachusetts • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 7, 2018 · Synced Sep 18, 2026, 8:41 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Smoking Cessation CM for Veterans With or at Risk for Cancer

NCT06432985
View directory record Official record
Conditions
Tobacco Use Disorder, Substance Use Disorder
Interventions
Focus Group, Contingency Management, Behavioral Counseling (Cognitive Behavioral Therapy, CBT), TUD Treatment as Usual (TAU)
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2031
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 29, 2025 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Phase 4 Interventional Results available

BREATHE 2 Clinic Stop-Smoking Treatment Outreach Study

NCT05683821
View directory record Official record
Conditions
Quitting Smoking, Smoking Cessation, Smoking, Cigarette
Interventions
Text message smoking treatment, Nicotine replacement therapy sampling, Wisconsin Tobacco QuitLine Referral, Referral to Primary Care Provider, BREATHE 2 Cessation Study, Additional modalities to learn about and request treatment
Behavioral · Drug · Combination Product
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
12,376 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effectiveness of a Web-Assisted Quitline for Smokeless Tobacco Users

NCT00820495
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Web + Phone, Web Only, Phone Only, Usual Care
Behavioral
Lead sponsor
Oregon Research Institute
Other
Eligibility
18 Years and older
Enrollment
1,683 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
2
States / cities
San Diego, California • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 4, 2013 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional Results available

Varenicline or Nicotine Patch in Promoting Smoking Cessation Among Current Smokers

NCT01771627
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
varenicline, nicotine patch
Drug
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Sep 27, 2020 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Efficacy and Cost of State Quitline Policies

NCT00366977
View directory record Official record
Conditions
Smoking Cessation, Tobacco Use Cessation, Cost-effectiveness
Interventions
Multi-session telephone counseling, NRT patches
Behavioral · Drug
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
4,614 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2005
U.S. locations
3
States / cities
Portland, Oregon • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 1, 2011 · Synced Sep 18, 2026, 8:41 PM EDT
Completed No phase listed Observational

Tobacco Assessment and Intervention With Low-Income Persons Living With HIV-AIDS (PLWHA) in Community-Based AIDS Service Organizations

NCT01482923
View directory record Official record
Conditions
Tobacco Cessation, HIV, AIDS
Interventions
Treatment as usual, AIR (Aspirations, Inspiration, Respiration)
Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 3, 2019 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Phase 4 Interventional Results available

A Text Messaging Program for Smokers in Primary Care

NCT03174158
View directory record Official record
Conditions
Smoking Cessation
Interventions
Mailed nicotine replacement therapy, Text messaging, Brief advice
Drug · Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 6, 2020 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparative Effectiveness of Adding Weight Control to Smoking Cessation Quitlines

NCT01867983
View directory record Official record
Conditions
Cigarette Smoking, Overweight, Obesity
Interventions
Weight gain prevention and smoking cessation, Smoking cessation
Behavioral
Lead sponsor
Consumer Wellness Solutions
Industry
Eligibility
18 Years and older
Enrollment
2,540 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 14, 2016 · Synced Sep 18, 2026, 8:41 PM EDT
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 18, 2026, 8:41 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Effect of Helpers Program On-line Training on Smoking Relapse and Social Networks

NCT05641974
View directory record Official record
Conditions
Smoking, Cigarette Smoking
Interventions
Helpers Stay Quit Training
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 99 Years
Enrollment
940 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 18, 2026, 8:41 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Ask Advise Connect (AAC) Harris Heath CPRIT

NCT01788787
View directory record Official record
Conditions
Tobacco Use Cessation
Interventions
Quitline-Delivered Proactive Telephone Counseling, Follow-Up Phone Call, Smoking Cessation Training, Qualitative Interviews Concerning the Implementation of AAC
Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
5,212 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2049
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 27, 2019 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Interventions to Help More Low-income Smokers Quit

NCT04311983
View directory record Official record
Conditions
Tobacco Use Cessation, Smoking Behaviors, Health Disparity
Interventions
Tobacco Quitline, Smoke Free Home
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
21 Years and older
Enrollment
1,973 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 9, 2024 · Synced Sep 18, 2026, 8:41 PM EDT
Completed Not applicable Interventional

Proactive Population Health Strategy to Offer Tobacco Dependence Treatment to Smokers

NCT03612895
View directory record Official record
Conditions
Smoking, Tobacco
Interventions
Internal Care Coordination, External Community Referral, Usual Care
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
234 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 1, 2018 · Synced Sep 18, 2026, 8:41 PM EDT