Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT04311983 · ClinicalTrials.gov registry record · NA

Interventions to Help More Low-income Smokers Quit

A NA study of Tobacco Use Cessation and Smoking Behaviors, sponsored by Washington University School of Medicine.

Completed
Registry status
NA
Development phase
1,973
Enrollment target
1
Study location

NCT04311983: Completed NA study of Tobacco Use Cessation and Smoking Behaviors, sponsored by Washington University School of Medicine.

NCT04311983 is a NA study of Tobacco Use Cessation and Smoking Behaviors that has completed, run by Washington University School of Medicine. The registered enrollment target is 1,973 participants, above the 830-participant average among 36 other Tobacco Use Cessation trials with a reported enrollment target (138% higher). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT04311983, a NA study of Tobacco Use Cessation and Smoking Behaviors, has completed, sponsored by Washington University School of Medicine.

COMPLETED
Registry status
NA
Development phase
1,973 participants
Enrollment target
1
Study location

Study Summary

In a Hybrid Type 2 randomized trial, 1,980 low-income smokers from nine states with high smoking prevalence will be recruited from 2-1-1 helplines to receive either current standard practice (Quitline) or expanded services (Quitline + Smoke Free Homes) to increase tobacco cessation.

Primary Outcome

Percentage of participants who have 7 day smoking abstinence

Interventions

  • BEHAVIORAL Tobacco Quitline
  • BEHAVIORAL Smoke Free Home

Study Locations (1)

Missouri

  • Washington University School of Medicine - St Louis

Trial Details

FieldValue
Enrollment Target 1,973 participants
Start Date 2020-03-31
Est. Completion 2023-09-29
Phase NA

What the finished NCT04311983 record still lists

NCT04311983 is an interventional study that assigns participants to a tested intervention. Its 1,973 participants enrollment target places it among the larger protocols in the corpus, above the 830-participant average among 36 other Tobacco Use Cessation trials with a reported enrollment target (138% higher).

The record links to 3 conditions, with Tobacco Use Cessation appearing as the primary indexed condition, and to 2 interventions - of which Tobacco Quitline is the first listed.

NCT04311983 reports a single indexed study location in Missouri.

Frequently Asked Questions

What is clinical trial NCT04311983 about?

NCT04311983 is a clinical study titled "Interventions to Help More Low-income Smokers Quit". In a Hybrid Type 2 randomized trial, 1,980 low-income smokers from nine states with high smoking prevalence will be recruited from 2-1-1 helplines to receive either current standard practice (Quitline) or expanded services (Quitline + Smoke Free Homes) to increase tobacco cessation.

What is the current status of trial NCT04311983?

This trial is currently completed. It is a NA study. The enrollment target is 1,973 participants. The study started on 2020-03-31. Estimated completion is 2023-09-29.

What conditions does trial NCT04311983 study?

This clinical trial studies the following conditions: Tobacco Use Cessation, Smoking Behaviors, Health Disparity.

What interventions are being tested in trial NCT04311983?

The interventions under investigation include: Tobacco Quitline (BEHAVIORAL), Smoke Free Home (BEHAVIORAL).

Who is sponsoring clinical trial NCT04311983?

This trial is sponsored by Washington University School of Medicine, which has 1,502 total clinical trials registered on ClinicalTrials.gov.

Where is trial NCT04311983 being conducted?

This trial has 1 study location across Missouri. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.

Similar trials for Tobacco Use Cessation

Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.

Where NCT04311983's enrollment target sits among peer trials

1,973 6th of 36 higher than 31 of 36 other Tobacco Use Cessation trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Tobacco Use Cessation trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT06062394 · 1,980 participants · NA

    Penn Medicine Healthy Heart

  • NCT07321886 · 1,980 participants · Phase 3

    A Study of Eloralintide (LY3841136) in Participants With Obesity, or Overweight Without Type 2 Diabetes

  • NCT04251052 · 1,956 participants · NA

    A Study to Compare Two Surgical Procedures in Individuals With BRCA1 Mutations to Assess Reduced Risk of Ovarian Cancer

  • NCT00001465 · 2,000 participants

    Study of the Disease Process of Lymphangioleiomyomatosis

Similar registry start date

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

  • NCT07125183 · started 2026-12 · Phase 2

    Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma

  • NCT07292298 · started 2026-11 · Phase 2

    Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates

  • NCT04263285 · started 2026-10 · NA

    Treatment of Depression Post-SCI

Source: ClinicalTrials.gov NCT04311983, the US trial registry maintained by the National Library of Medicine. NCT04311983 (large enrollment · single site footprint · completed) retrieved and formatted by PlainTrial, see methodology.