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Completed Phase 4 Interventional Accepts healthy volunteers Results available

Improving Quitline Support Study

ClinicalTrials.gov ID: NCT03538938

Public ClinicalTrials.gov record NCT03538938. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 5, 2026, 7:29 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

Improving Quitline Support Study: Optimizing Remotely Delivered Smoking Cessation Services for Low-Income Smokers

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This study seeks to evaluate ways to improve outcomes for low-education, uninsured or Medicaid-eligible smokers who do not successfully quit with standard telephone quit line treatment. The study will use an efficient factorial study design to evaluate four evidence-based strategies to improve follow-up care offered by the Wisconsin Tobacco Quit Line (WTQL) to socioeconomically disadvantaged callers who report smoking four months following initial WTQL treatment comprising a single counseling call and 2-week supply of a single nicotine replacement therapy. These strategies include: increasing the intensity of nicotine replacement medication (among those medically cleared to use such medications), increasing the intensity of WTQL counseling, helping callers enroll in an evidence-based smoking cessation texting support program (SmokefreeTXT), and offering moderate financial incentives for engagement in counseling and SmokefreeTXT.

Study identification

NCT ID
NCT03538938
Recruitment status
Completed
Study type
Interventional
Phase
Phase 4
Enrollment
1,316 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Jun 6, 2018
Primary completion
Aug 14, 2023
Completion
Aug 14, 2023
Last update posted
Jul 11, 2024

2018 – 2023

United States locations

U.S. sites
1
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
Wisconsin Tobacco Quit Line (service provided by Free & Clear, Inc.) Seattle Washington 98104

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03538938, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jul 11, 2024 · Synced Sep 5, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT03538938 live on ClinicalTrials.gov.

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