Skip to main content
OpenTrials
Completed

NCT Number: NCT05016505

Supporting Smoke-Free Policy Compliance in Public Housing

This project seeks to determine the effectiveness of two types of interventions to reduce exposure to secondhand smoke in residential buildings. One intervention is geared toward all building residents (resident endorsement) and the other targets smokers (smoking reduction via relocation and reduction in personal smoking/cessation) with the goal of reducing personal smoking and secondhand smoke exposure.

Completed

Looking for future studies?

Notify Me

Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Columbia University Irving Medical Center

New York, 10032, United States

About this study

Smoke-free housing policies in multi-unit housing are promising and increasingly widespread interventions to reduce smoking and secondhand smoke exposure. Little research has identified factors that improve compliance with smoke-free housing policies in low-income multi-unit housing and test corresponding solutions.

The proposed randomized controlled trial (RCT) addresses key gaps in knowledge and capitalizes on key scientific opportunities by: 1) leveraging the federal mandate to ban smoking in a public housing system of more than sufficient size to conduct an adequately powered RCT; 2) expanding our understanding of smoke-free policy compliance beyond policy implementation by testing two novel treatments: a) in-residence smoking cessation and b) resident endorsement, while 3) addressing population and location-specific tobacco-related disparities.

The investigators hypothesize that the relocation/cessation plus resident endorsement intervention will yield significantly larger reductions in personal smoking and secondhand smoke exposure, compared to standalone interventions and the standard approach.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Building Inclusion Criteria:

  • NYCHA buildings in Manhattan & the Bronx (stratified evenly by borough) with more than 50 units, not undergoing major renovations.

Building Exclusion Criteria:

  • Buildings in a borough that is not in Manhattan or the Bronx
  • Buildings smaller than 50 units
  • Buildings undergoing major renovations
  • Buildings that are or will be part of Rental Assistance Demonstration (RAD) or Permanent Affordability Commitment Together (PACT)
  • Buildings that are mixed finance
  • Buildings that are exclusively for elderly
  • Buildings that are privately managed
  • Buildings that have other research studies ongoing

Participant Inclusion Criteria:

  • Recruit NYCHA residents via door knocking and lobby intercepts until we reach our targeted number per group (4 smokers, 4 non-smokers in each building).
  • Residents will be screened for smoking status. Both smokers and non-smokers to be recruited but only one participant- smoker or a non-smoker- will be recruited per apartment.
  • Smoking will be defined as those that report using a cigarette or other combustible tobacco product (e.g., little cigar, cigarillo) at least 5 days in the past month. Non-smokers include never smokers and former smokers who had quit 12 months ago or earlier.
  • Additional eligibility criteria include individuals above 18 years old living in the building at least 5 days/week and 9 months/year, not planning on moving in the next 2 years.

Participant Exclusion Criteria:

  • Individuals with severe physical or mental medical conditions (i.e. cognitive disability) or other factors that could limit participation or ability to give informed consent in the study at baseline or during follow-ups.
  • Individuals who participated in the earlier focus groups.
  • Individuals who only smoke non-tobacco products (e.g., marijuana).

Treatment and study plan

Reduction (relocation and reduction of personal smoking) and cessation

Behavioral

Individual-level. Peer educator to provide reduction/cessation and/or relocation support.

Resident Endorsement

Behavioral

Building-level. Peer educator to conduct building-level sessions.

Primary outcomes

  1. Change in number of cigarettes smoked per day

    Time frame: Measured at baseline (in person interview), 3 months (phone interview) and 12 months (in person interview)

    Self-reported average number of cigarettes smoked per day among smokers

  2. Change in salivary cotinine

    Time frame: At baseline and at the 12-month follow-up

    Salivary cotinine (saliva collected as passive drool) will be measured for 25% of the sample among smokers and non-smokers alike

  3. Change in secondhand smoke exposure

    Time frame: Measured at baseline (in person interview), 3 months (phone interview) and 12 months (in person interview)

    Self-reported secondhand smoking exposure (hours of secondhand smoke exposure in the building in the past 7 days); among smokers & non-smokers

Secondary outcomes

  1. Change in number of participants with successful quit attempts

    Time frame: Measured at baseline (in person interview), 3 months (phone interview) and 12 months (in person interview)

    Binary; whether smokers have successfully quit

  2. Change in number of quit attempts

    Time frame: Measured at baseline (in person interview), 3 months (phone interview) and 12 months (in person interview)

    Mean number of quitting attempts among smokers

  3. Change in number of participants with secondhand smoke observations

    Time frame: Ever observing someone smoking indoors within the past 7 days measured at baseline (in person interview), 3 months (phone interview) and 12 months (in person interview)

    Binary; whether participant has observed someone smoking indoors in the building; among smokers & non-smokers

  4. Change in number of hours of secondhand smoke exposure

    Time frame: Number of hours observed someone smoking indoors within the past 7 days measured at baseline (in person interview), 3 months (phone interview) and 12 months (in person interview)

    Counted number of hours of exposure

  5. Change in number of smokers

    Time frame: At each building visit at baseline and 12 months

    Counted number of people observed smoking in common areas

  6. Change in number of cigarette butts

    Time frame: At each building visit at baseline and 12 months

    Counted number of cigarette butts observed in common areas

Sponsors and collaborators

Lead sponsor

Columbia University

Other

Collaborators

  • National Cancer Institute (NCI)

Registry information

Official study title

A Randomized Controlled Trial to Support Smoke-Free Policy Compliance in Public Housing

Important dates

Study start
2022
Primary completion
2025
Study completion
2025
First posted
Aug 23, 2021
Registry last updated
Jan 7, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.