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| ID | Type | Description | Link |
|---|---|---|---|
| R01MD016898 | U.S. NIH Grant/Contract | View source |
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| Name | Class |
|---|---|
| National Institute on Minority Health and Health Disparities (NIMHD) | NIH |
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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.
OBJECTIVES:
The investigators will build on previous studies, where a smoke-free home intervention to increase voluntary adoption of smoke-free homes in permanent supportive housing for formerly homeless adults was developed and evaluated.
Aim 1: To estimate the effect of our adapted smoke-free home intervention on the primary outcome of residents' voluntary adoption of smoke-free homes and the secondary outcome of biochemically-verified tobacco abstinence at 6-months follow-up.
Aim 2: To determine the cost of our adapted smoke-free home intervention and determine whether it is a cost-effective use of health care resources.
Aim 3: To evaluate variation in stakeholders' perspectives on the adapted smoke-free home intervention's adaptability, scalability and sustainability.The proposed intervention can expand access to smoke-free policies and smoking cessation services in subsidized housing, thereby reducing racial/ethnic disparities in tobacco use, tobacco exposure and chronic disease in these populations.
OUTLINE:
A wait-list cluster randomized controlled trial of the adapted smoke-free home intervention compared to usual care among residents from subsidized housing sites in Northern California. Participants from twenty-four subsidized housing sites will be randomized into intervention and waitlist control arms
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 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. |
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| 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. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Smoke-free home resident intervention | Behavioral | Study staff delivered intervention on how to adopt a smoke free home using a pamphlet |
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| Measure | Description | Time Frame |
|---|---|---|
| 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 |
| Measure | Description | Time Frame |
|---|---|---|
| Percentage of participants with point prevalent abstinence (PPA) | The percentage of participants with carbon dioxide (CO)-verified tobacco abstinence will be reported at the 6 month follow-up visit. | 6 months |
| Measure | Description | Time Frame |
|---|---|---|
| Percentage of participants adopting a cannabis-free home among cannabis users | The percentage of participants who reported to adopt a cannabis-free home in the past 90 days will be reported | 6 months |
Inclusion Criteria:
Eligible resident participants
Current smokers defined as:
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.
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Ana Martinez | Contact | 415-839-0572 | ana.martinez4@ucsf.edu | |
| Weijie Wang | Contact | Weijie.Wang@ucsf.edu |
| Name | Affiliation | Role |
|---|---|---|
| Maya Vijayaraghavan, MD | University of California, San Francisco | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of California, San Francisco | Recruiting | San Francisco | California | 94143 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 40729126 | Derived | 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. |
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De-identified datasets may be provided to other researchers upon request and approval by the investigator
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| ID | Term |
|---|---|
| D014029 | Tobacco Use Disorder |
| D000073869 | Tobacco Smoking |
| ID | Term |
|---|---|
| D019966 | Substance-Related Disorders |
| D064419 | Chemically-Induced Disorders |
| D001523 | Mental Disorders |
| D012907 | Smoking |
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Cluster randomized controlled groups
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| 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). |
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| D001519 |
| Behavior |
| D064424 | Tobacco Use |