Smoke-free Home Study in Subsidized Housing

NCT06170437 | Recruiting

• 2 other identifiers: 24631R01MD016898
• Study Type: interventional
• Target: 544
• Locations: 1 country
• Sites: 1

Brief Summary

Comprehensive smoke-free policies have the potential to substantially reduce tobacco-related disparities among populations in subsidized housing. This study fills this gap by identifying approaches to increase the implementation of smoke-free policies in all types of subsidized housing by increasing the voluntary adoption of smoke-free homes and promoting access to smoking cessation services.

Conditions

Tobacco Dependence; Tobacco Smoking

Outcome Measures

Primary Outcomes (1)

• Percentage of participants adopting a smoke-free home for ≥90 days

  The percentage of participants who reported to adopt a smoke-free home in the past 90 days will be reported

  6 months

Secondary Outcomes (1)

• Percentage of participants with point prevalent abstinence (PPA)

  6 months

Other Outcomes (1)

• Percentage of participants adopting a cannabis-free home among cannabis users

  6 months

Study Arms (2)

Intervention

EXPERIMENTAL

The study's investigators will train bilingual study staff to deliver the intervention to residents using a script that matches the content in the smoke-free home intervention pamphlet. The in-person delivery of the intervention and pamphlet will be the primary modes of intervention delivery to residents. The pamphlet will include: (1) the harms of tobacco, e-cigarette use, cannabis use and exposure (secondhand and thirdhand), (2) an exercise to calculate personal cost of tobacco use, (3) benefits of a smoke-free home, (4) skill-building on how to adopt a smoke-free home, and (5) motivational language on smoke-free home adoption. The study staff will qualitatively assess participants' knowledge by prompting questions on the topics covered and will refer participants to lay-health workers (LHWs) for one-on-one coaching. Participants will receive a pledge to designate their homes smoke-free.

Behavioral: Smoke-free home resident intervention; Behavioral: Lay Health Worker coaching

Waitlist Control Group

NO INTERVENTION

The current standard of care does not include any interventions for smoke-free home adoption or referrals to tobacco treatment resources. At the end of the primary endpoint (6 months), control participants will be offered the intervention.

Interventions

Smoke-free home resident intervention BEHAVIORAL

Study staff delivered intervention on how to adopt a smoke free home using a pamphlet

Intervention

Lay Health Worker coaching BEHAVIORAL

Brief tobacco cessation coaching by lay health worker housing staff with residents within 2 weeks of the smoke-free home resident intervention, and on a monthly schedule as part of their routine encounters with residents (total 6 sessions).

Intervention

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Eligible resident participants
• Current smokers defined as:
• Smoked at least 100 cigarettes in lifetime
• Smoked daily in the past 7 days, and at least 5 cigarettes per day, verified by expired CO ≥ 5 parts per million \[ppm\] Smokerlyzer CO+ monitor),
• Smoke in their home
• Expect to live in the subsidized housing site for at least 12 months
• Age ≥ 18 years
• Speak Chinese (Cantonese or Mandarin), English, Spanish, or Vietnamese
• Able to provide informed consent.

You may not qualify if:

• Contraindication to any study-related procedures or assessment

Sponsors & Collaborators

• University of California, San Francisco: lead
• National Institute on Minority Health and Health Disparities (NIMHD): collaborator

Study Sites (1)

University of California, San Francisco

San Francisco, California, 94143, United States

RECRUITING

Related Publications (1)

• Hawes MR, Chakravarty D, Cheng J, Handley MA, Tsoh JY, Lin TK, Hiatt RA, Vijayaraghavan M. The Healthy Homes Study: Protocol for a cluster randomized trial of a place-based smoke-free home intervention in affordable housing. PLoS One. 2025 Jul 29;20(7):e0328786. doi: 10.1371/journal.pone.0328786. eCollection 2025.

  PMID: 40729126 DERIVED

MeSH Terms

Conditions

Tobacco Use Disorder; Tobacco Smoking

Condition Hierarchy (Ancestors)

Substance-Related Disorders; Chemically-Induced Disorders; Mental Disorders; Smoking; Behavior; Tobacco Use

Study Officials

• Maya Vijayaraghavan, MD

  University of California, San Francisco

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Ana Martinez

CONTACT

415-839-0572; ana.martinez4@ucsf.edu

Weijie Wang

CONTACT

Weijie.Wang@ucsf.edu

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: Cluster randomized controlled groups

Study Record Dates

• First Submitted: December 6, 2023
• First Posted: December 14, 2023
• Study Start: July 12, 2024
• Primary Completion (Estimated): December 31, 2026
• Study Completion (Estimated): August 31, 2027
• Last Updated: February 24, 2025

Record last verified: 2025-02

Data Sharing

• IPD Sharing: Will share

Locations

US (1)