Christelle Chrea

ORCID: 0000-0002-2904-5312
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About
Contact & Profiles
Research Areas
  • Smoking Behavior and Cessation
  • Behavioral Health and Interventions
  • Obesity, Physical Activity, Diet
  • Consumer Attitudes and Food Labeling
  • Climate Change Communication and Perception
  • Delphi Technique in Research
  • Risk Perception and Management
  • Sensory Analysis and Statistical Methods
  • Cultural Differences and Values
  • Mental Health Research Topics
  • Health, Environment, Cognitive Aging
  • Global Public Health Policies and Epidemiology
  • Organic Food and Agriculture

Philip Morris International (Switzerland)
2015-2025

Background A Delphi study was conducted to reach a consensus among international clinical and health care experts on the most important functioning self-reported concepts when evaluating switch from smoking cigarettes using smoke-free tobacco and/or nicotine products (sf-TNPs). Objective The aim of this research identify considered measure assessing status users products. Methods Experts (n=105), including professionals, researchers, policy makers, 26 countries with professional experience...

10.2196/58614 article EN cc-by JMIR Formative Research 2025-01-02

Making tobacco products associated with lower risks available to smokers who would otherwise continue smoking is recognized as an important strategy towards addressing smoking-related harm. Predicting use behavior major component of product risk assessment. In this context, perception a possible factor driving uptake and use. As prior market launch real-world actual cannot be observed, assessing can provide predictive information. Considering the lack suitable validated self-report...

10.1186/s12955-018-0997-5 article EN cc-by Health and Quality of Life Outcomes 2018-09-21

Background: This was a pre-market actual use study with the Tobacco Heating System (THS), candidate modified risk tobacco product, conducted adult smokers in eight cities United States. The main goal of to describe THS adoption real-world setting. aim this analysis identify potential predictors for using stepwise logistic regression method. Methods: an observational assessing self-reported stick-by-stick consumption product compared commercial cigarettes over six weeks. aimed at replicating...

10.12688/f1000research.17606.1 preprint EN cc-by F1000Research 2019-02-24

Measurement in the social sciences has been characterized by deficient justification and underdeveloped conceptual theories. Instruments supposed to measure same measurand typically do not provide comparable measurements. From perspective of metrological traceability, state affairs thus unsatisfactory. Today, better instruments can be developed as psychometrics provides tools for invariant measurement (Rasch theory), where measurements are justifiable, linear, sample-independent. Different...

10.1016/j.measurement.2021.109593 article EN cc-by-nc-nd Measurement 2021-05-17

<ns3:p><ns3:bold>Background.</ns3:bold> Determining the public health impact of tobacco harm reduction strategies requires assessment consumer perception and behavior associated with nicotine products (TNPs) different exposure risk profiles. In this context, rigorous methods to develop validate psychometrically sound self-report instruments measure consumers’ responses TNPs are needed.</ns3:p><ns3:p> <ns3:bold>Methods.</ns3:bold> Consistent best practice guidelines, including U.S. Food Drug...

10.12688/f1000research.16810.1 preprint EN cc-by F1000Research 2018-12-02

To predict potential public health impact of a candidate Modified Risk Tobacco Product (MRTP) requires pre-market information on how adult consumers actually use the product under close to real-world conditions. In this context, Heating System (THS) was assessed with regard adoption, in conjunction other tobacco products, and switching back smoking cigarettes. Single group, four-week, consumer studies were conducted between 2013 2015 five countries (Germany, Italy, Japan, South Korea,...

10.16135/j.issn1002-0861.2017.0564 article EN Tobacco Science & Technology 2017-07-25

<ns3:p><ns3:bold>Background: </ns3:bold>This was a pre-market, observational, actual use study with the Tobacco Heating System (THS), candidate modified risk tobacco product. The main goal of to describe THS adoption within current adult daily smokers by replicating usage in real-world conditions participants being able consume cigarettes, THS, and any other nicotine-containing products (e.g., e-cigarettes, cigars, etc.) <ns3:italic>ad libitum</ns3:italic>.</ns3:p><ns3:p> <ns3:bold>Methods:...

10.12688/f1000research.17606.2 preprint EN cc-by F1000Research 2021-07-14

When evaluating the public health effects of novel tobacco products, such as candidate modified risk products (cMRTPs), perceptions are important they potential determinants product use. In this paper, we describe development a conceptual framework perceived risks associated with use and nicotine-containing products. We conducted literature review, held 12 focus group discussions in USA, elicited expert opinions to identify key concepts related The groups, provided evidence for...

10.16135/j.issn1002-0861.2017.0562 article EN Tobacco Science & Technology 2017-05-23

How nicotine is administered has evolved from cigarettes to various delivery systems. Assessing perceived dependence on nicotine-containing products now requires accounting for product specificity while allowing comparisons across and users. This study aims develop a new self-report measure assess tobacco (TNPs) among exclusive poly-TNP A draft version of the measure, ABOUT-Dependence, was constructed based literature review, qualitative research, expert opinion. Data scale formation...

10.1038/s41598-024-60790-4 article EN cc-by Scientific Reports 2024-05-02

<sec> <title>BACKGROUND</title> A Delphi study was conducted to reach a consensus among international clinical and health care experts on the most important functioning self-reported concepts when evaluating switch from smoking cigarettes using smoke-free tobacco and/or nicotine products (sf-TNPs). </sec> <title>OBJECTIVE</title> The aim of this research identify considered measure assessing status users products. <title>METHODS</title> Experts (n=105), including professionals, researchers,...

10.2196/preprints.58614 preprint EN 2024-03-20

Abstract Measurement in the social sciences is characterised by a multitude of incompatible paradigms, most which fail to adhere fundamental principles measurement explicated metrology. This has led fragmentation instruments that are hard interpret and lack common reference. Rasch theory, metrological framework model, combined with strong substantive theories measurand, potential advance significantly. The model establishes reference standard unit against different can be calibrated ensuring...

10.1088/1742-6596/1379/1/012024 article EN Journal of Physics Conference Series 2019-11-01
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