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53 active trials for Tobacco Use

THC Crossover Study

This is a randomized, crossover study enrolling experienced dual cannabis-tobacco smokers (N=18) to describe the differences in THC and toxicant exposure, examining pharmacokinetic, subjective, and cardiovascular effects from smoking and vaping dry herb cannabis. This study will also examine the differences in toxicant exposure and cardiovascular disease risk between smoking cannabis and smoking tobacco cigarettes.

Start: October 2020

Shrinking the Size of the Tobacco Power Wall and Restricting the Number of Tobacco Products Displayed to Reduce Adolescent Tobacco Use

The overall aim of this research is to experimentally evaluate the extent to which reducing the size of the tobacco power wall and the number of tobacco product units displayed influences tobacco use risk in adolescents.

Start: October 2020

A Study to Characterize Nicotine Pharmacokinetics and Subjective Effects of Nicotine Pouches in Adult Cigarette Smokers

This study is designed to evaluate plasma nicotine pharmacokinetic (PK) parameters following the use of nicotine pouches in cigarette smokers who have experience with use of smokeless tobacco (SST) [e.g., snus, moist snuff].

Start: April 2021

Investigation of Cigarette Cravings in Smokers

Interventions to disrupt memory reconsolidation have held promise for the treatment of stress- and anxiety-related disorders. In the present study, the investigators will examine whether an intervention based on these principles, called memory updating, could be adapted for reward-seeking behaviors. To test this, non-treatment seeking tobacco smokers will be exposed to smoking cues and/or stress, two stimuli known to trigger smoking. It is predicted that exposure to a stress task will enhance the cues' motivational salience and yield greater susceptibility to the memory updating procedure. As an add-on, the investigators will examine COVID-associated changes in substance use and whether participants in the memory updating groups might be more resilient to these effects. It is predicted that the changes in substance use will depend on whether the substances are used primarily in social settings.

Start: February 2018

Tobacco Cessation Among Smokers Under Alcohol and/or Cannabis Treatment

Aims: To identify the predictors associated with smoking cessation in smokers under treatment for alcohol and/or cannabis treated in drug treatment centers (DTC). Methodology: Mixed methods project with qualitative and quantitative designs (three studies). Study I discussion groups: of clinical professionals of DTC to explore the barriers/facilitators of these smokers in quitting and the interventions carried out. Study II Prospective cohort of smokers in alcohol and/or cannabis treatment that will be followed-up for 12 months. Sample size: difference in incidence (exposed to cessation interventions versus non-exposed = 12 per 100 years), ? = 0.05, ? = 0.10, losses = 20% (n = 726). Dependent variables: self-reported and verified tobacco consumption abstinence, quit attempts, motivation, and self-efficacy. Independent variables: age, sex, the substance under treatment. Analysis: incidence, relative risk and simple and multiple logistic regression models (odds ratio and confidence interval, CI, 95%) of quitting. Study III discussion groups: with smokers under alcohol and/or cannabis treatment selected according to their typology. Analysis: of thematic content and triangulation qualitative and quantitative results. Expected results: Characterization of variables that influence tobacco cessation, to improve the design of interventions.

Start: October 2020

Electronic Cigarette Unit Price Manipulations in the Experimental Tobacco Marketplace

Electronic cigarettes (e-cigarettes) may be a safer alternative to conventional cigarettes and are available in a broad range of nicotine strengths. The overall goal of this project is to use an experimental analogue of the real-world tobacco marketplace to examine the effects of nicotine strength on e-cigarette consumption and the likelihood that current smokers will either switch to e-cigarettes (which may reduce harm) or use both products in combination (which may increase harm). Testing effects of e-cigarette nicotine strength under controlled conditions in a context that models the real world will facilitate evidence-based policies that have a net benefit to health.

Start: March 2019

Eliciting Perceived Norms About Substance Use

Survey experiment to elicit perceived norms about substance use

Start: February 2021

Reducing Tobacco Exposures Among African American Women and Children

Secondhand smoke exposure in the home can causes sudden infant death syndrome (SIDS), asthma, respiratory illnesses, and ear infections in children. In addition to cigarette smoke, exposure to other tobacco products can further compromise the safety of children in the home. This study aims to reduce the burden of multiple tobacco exposures, improve access to preventive care, and reduce the disproportionate risk for chronic diseases, including cancer, among African American women and children living in the Arkansas Delta region. Our central hypothesis is that messages delivered by a community health worker that aim to modify knowledge, attitudes, beliefs, and subjective norms may influence the perceived threat of tobacco exposures and provide cues for African American women caregivers to implement comprehensive smokefree policies to protect their children from the harms of tobacco and in-turn, influence their quitting.

Start: January 2020

Tackle Concurrent Addictions in At-Risk Youth in Downtown Ottawa

According to the 2015 Ontario Student Drug Use and Health Survey (OSDUHS), there has been a significant increase in the number of secondary school youth who use poly-substances. Not all youth have the same risk for problematic substance use. Health literature documents a high level of comorbidity between mental health and substance use, which is exacerbated in homeless youth populations. Therefore, the proposed study will focus on understanding poly-substance use among at-risk homeless school youth. As seen in substance use research and the PROMPT (2016) study (Participatory Research in Ottawa: Management and Point-of-Care for Tobacco Dependence, PI: Dr. Smita Pakhale), reduction and quitting of one substance (tobacco smoking) can lead to the reduction and quitting of other poly-substance use. A Community-Based Participatory Action Research (CBPAR) approach can help at-risk youth feel safe and comfortable enough to provide personal information about their poly-substance use and engagement with treatment or harm reduction programs. This project will be a first step in increasing health equity among at-risk homeless youth in Downtown Ottawa. The investigators aim to follow a group of at-risk youth to while providing an appropriately modified PROMPT intervention, including peers support and a licensed mental health and substance use nurse.

Start: June 2021

Pilot Randomised Controlled Trial of ToQuit Intervention in India

Tobacco use is associated with high mortality, and a range of morbidities including cancer, and lung and cardiovascular diseases. Furthermore, tobacco users who die prematurely deprive their families of income, raise the cost of health care and hinder economic development. India is the second-largest consumer (current use-48% males, 20% females; 275 million adults) and third largest producer of tobacco in the world5; and has one of the highest mortality related to tobacco. The treatment gap for tobacco use in India is as high as 92%. Opportunistic screening and brief interventions in primary care, although recommended by the World Health Organization (WHO), is largely missing in current practice in India. The existing tobacco cessation strategy in India has shown limited success due to poor availability and accessibility of tobacco cessation services, and non-availability of interventions that are culturally relevant and contextual to the target population. Preliminary formative research as a part of the larger ToQuit study has informed the development of the first version of the treatment package. This first version of the package was tested through a case series, by refining the intervention content and delivery mechanisms through an iterative process, to develop the final intervention. This pilot Randomised Control Trial (RCT) will aim to empirically evaluate the feasibility and acceptability of the mobile-based brief intervention (BI) for tobacco use, generate preliminary estimates of the impact of the BI, and fine-tune the procedures for a definitive RCT.

Start: April 2021

NYCHA Mindfulness-based Smoking Cessation Intervention

The study will assess feasibility, accessibility and impact of a mindfulness-based smoking cessation group intervention for New York City Housing Authority (NYCHA) residents. Residents who smoke to receive an 8-week intervention. Participants will also be offered 4 weeks of nicotine replacement therapy (NRT).

Start: June 2021

CSD210202: A Study to Assess Nicotine Uptake From Electronic Nicotine Delivery Systems

This is an open-label, randomized, 5-way crossover study designed to evaluate plasma nicotine pharmacokinetic (PK) parameters following an ad libitum use of Electronic Nicotine Delivery System (ENDS) investigational products (IPs) in a confinement setting by generally healthy combustible cigarette (CC) smokers.

Start: February 2021

Screening While You Wait 2: Alcohol and Tobacco Use

This project aims to help patients improve their health through screening and treatment of risky alcohol and tobacco use. Previous studies show the best approach to reduce substance use includes routine screening, short discussions with a clinician, and tailored resources. Unfortunately, primary care providers (PCPs) do not often screen or provide evidence-based interventions. PCPs report lack of confidence, lack of awareness, and competing priorities as barriers to screening and providing evidence-based care. However, digital solutions can enable patient-initiated screening and overcome barriers in a manner that has the potential to be both efficient and effective. The proposed project will test the feasibility of digital patient-initiated screening at the WCH Family Practice (WCH FP) for alcohol and tobacco use, building on work from the first iteration of Screen While You Wait (SWYW). The research team will email patients a secure link to a survey with screening questions assessing substance use and important contextual factors. The results will be summarized in the patient's chart with an automatic notification to the PCP. If the survey reveals risky behaviours, both the PCP and patient will receive a package of tailored resources for further care delivered through a customized website.

Start: January 2020

Influence of Tobacco Use on Cannabis Use

Cannabis smokers who also smoke tobacco cigarettes have markedly higher rates of cannabis relapse relative to those who do not use tobacco. There is a clear need to develop and evaluate interventions for dual tobacco and cannabis users. The investigators of this study have previously shown that the co-use of tobacco cigarettes contributes to the maintenance of daily cannabis use, and that age of cigarette onset is a critical predictor of treatment outcome. Short-term tobacco cessation may suffice in altering cannabis relapse rates in later-onset cigarette smokers, while a longer period of tobacco cessation may be needed for earlier-onset smokers. In the current study, a human laboratory model will be utilized to determine whether cannabis relapse varies as a function of tobacco cessation duration and age of tobacco use onset.

Start: February 2020

Feasibility Study - Filter Ventilation

This open label, between-subject, randomized multi-center pilot study will assess the feasibility of conducting a study remotely with telehealth visits to assess the effect of cigarettes with minimal filter ventilation vs. moderate filter ventilation on smoking behavior and biomarkers of tobacco toxicant exposure. Subjective measures, alveolar carbon monoxide, blood pressure and cigarettes per a day will be collected remotely. Biological samples will be collected at home and mailed to the study clinic.

Start: February 2021

A Guided Imagery Tobacco Cessation Intervention Delivered by a Quit Line and Website

Tobacco use is still the leading cause of preventable disease and death in the United States. Tobacco quit lines are effective at helping smokers to quit, but quit lines are underutilized, especially by men and racial/ethnic minorities. Guided imagery is effective at helping people quit smoking, and is appealing to males and diverse racial groups, but has limited reach. The proposed study will develop and test the feasibility and acceptability of a guided imagery tobacco cessation intervention that is delivered by a combination of quit line coaches and an interactive website. The investigators hypothesize that guided mental imagery delivered using the quit line "coaching model" combined with an interactive website could be an effective intervention strategy.

Start: May 2018

Comparing an Opt-out to an opt-in Approach for Smoking Cessation in VA Primary Care Clinics

The investigators propose a Type I hybrid effectiveness/implementation study to evaluate two population-based approaches for increasing use of Quitlines and text messaging at two VA sites. Specifically, the investigators will test the default bias, examining whether an opt-out approach to referral is more effective than an opt-in approach. The investigators will randomly assign teams to either an opt-out or opt-in approach to referring smokers to treatment. In the opt-out approach, the default is that everyone is referred to treatment unless they actively choose not to be. In the opt-in approach, people are offered treatment but must actively choose to enroll in it.

Start: August 2019

Addressing Psychological Risk Factors Underlying Smoking Persistence in COPD Patients: The Fresh Start-II Study

Chronic Obstructive Pulmonary Disease (COPD) is caused primarily by smoking and smoking cessation is the first-line treatment for slowing disease progression. Despite this, nearly 50% of COPD patients continue to smoke following diagnosis. Smokers with COPD report high rates of co-occurring conditions - nicotine dependence, depression, and anxiety - which serve as barriers to quitting. The current study will pilot test a behavioral intervention designed to target the common psychological factors underlying these co-occurring conditions and foster smoking cessation among COPD patients.

Start: December 2020

Impact of E-cigarette Characteristics on Reinforcement and Tobacco Use Patterns

The purpose of this project is to understand how different e-cigarettes influence their likeability and use among current smokers who try using e-cigarettes. Participants will receive an e-cigarette to sample over a three week period. During this time period they will complete daily electronic diaries and weekly lab visits. The results from this information will help understand how different types of e-cigarettes are likely to influence cigarette and e-cigarette use.

Start: April 2019

Connecting Alaska Native People to Quit Smoking

The prevalence of smoking among US adults is highest among American Indians and Alaska Native (AI/AN) persons; however, there are a lack of tobacco cessation interventions developed specific to this disparity group. Social media holds promise as a scalable intervention strategy to promote engagement in treatment and cessation outcomes for Alaska Native (AN) people. Researchers plan to develop and pilot test a culturally relevant, Facebook delivered intervention to promote smoking treatment uptake and cessation among AN smokers. The Facebook content will include a digital storytelling approach adapted from the effective Centers for Disease Control (CDC) Tips from Former Smokers educational mass media campaign. The project builds on the researcher team's longstanding tobacco control research partnership with the AN community and was informed by their understanding of cultural factors that can both impede and encourage cessation in this population. If the pilot intervention is successful, researchers will have a blueprint to conduct a large randomized controlled trial. The researchers long-term objective is to develop interventions for AN tobacco users that will ultimately reduce their risk of tobacco-caused disease and mortality.

Start: October 2018