Kelvin Choi
Dados Biográficos
| ID | 3824852 |
|---|---|
| NOME | Kelvin Choi |
| PRENOMES | Kelvin |
| SOBRENOME | Choi |
| ASSINATURA | CHOI K |
| AFILIAÇÕES | National Institute on Minority Health and Health Disparities |
| ORCID | 0000-0002-6753-2883 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 45 |
| TOTAL DE CITAÇÕES | 19 |
| TOTAL COMO AUTOR | 45 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2011 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 2 |
Patterns of tobacco product use among US adults who use nicotine pouches and the association between nicotine pouch use and tobacco product use cessation
Among US adults who dually used nicotine pouches with other tobacco products, none completely switched to exclusive nicotine pouch use. Nicotine pouch use was also not associated with increased probabilities of quitting tobacco product use
Vicarious Exposure to Police Discrimination and Brutality, Concern, and Changes in Cigarette Smoking
Vicarious exposure to PDB was prevalent, especially among Black/African American individuals. These exposures may have heightened concerns about PDB in the entire population and may in turn have worsened cigarette-smoking behaviors, with some variation by race and/or ethnicity
Concern for Police Brutality, Societal Discrimination, and School Shootings and Subsequent Cigarette and Cannabis Use in Los Angeles County Hispanic and Non-Hispanic White Youth
Correlates of Anticipated Responses to Cigar Price Increase Among U.S. Adults Who Smoke Cigars
We examined the prevalence and correlates of anticipated responses to hypothetical cigar price increases. Data are from a 2021 representative sample of U.S. adults who reported past-30-day cigar use ( n = 454; mean age = 39.8 years). Weighted multivariable logistic regressions assessed the correlates of behavior change responses. If cigar price increased, 77.2% intend to pay more, 44.7% intend to reduce use, and 39.9%, 37.7%, and 17.1% intend to …
Heated Tobacco Products
Limited data exist on the awareness, beliefs, and use of heated tobacco products (HTPs). Data from 1583 U.S. adult (age ≥ 21 years) current tobacco users were collected in 2021. Participants self-reported HTP awareness, beliefs, use, and susceptibility, as well as current tobacco product use and sociodemographics. We used weighted logistic and multinomial regression models to explore their associations. Overall, 23.6% were aware of, 8.9% had ever…
Nicotine Pouch
Little is known about awareness, beliefs, and use of nicotine pouches (NPs). Data from 1583 U.S. adult (age ≥ 21 years) current tobacco users were collected in 2021. Respondents self-reported NP awareness, beliefs, use, and susceptibility as well as current tobacco product use and socio-demographics. We used weighted logistic and multinomial regression models to explore the associations between these variables. Overall, 46.6% of U.S. adult curren…
U.S. young adults’ awareness of the Master Settlement Agreement and cigarette industry practices and their associations with electronic cigarette industry and health risk perceptions
Findings suggest that increasing comprehensive awareness of the MSA and cigarette industry practices may influence young adults' e-cigarette-related perceptions, and may importantly prevent detrimental information gaps about the cigarette industry. Future research should investigate the potential impact of increasing awareness of the MSA and cigarette industry practices in changing e-cigarette-related perceptions, which may help prevent e-cigaret…
Awareness of electronic cigarette industry practices and their associations with anti-electronic cigarette attitudes among susceptible US young adults
Public education exposing e-cigarette industry practices may promote anti-e-cigarette attitudes among susceptible young adults who do not use commercial tobacco products. Future research should investigate the utility of anti-e-cigarette industry messaging
Financial hardship during the Covid-19 pandemic and increased receipt of commercial tobacco discount coupons among US adults who use commercial tobacco
Over one-fifth of US adults who used CT received more discount coupons during the pandemic. Those facing financial hardships had higher discount coupon reception, suggesting potential targeted marketing to financially vulnerable individuals by the tobacco industry
Cumulative cigarette discount coupon exposure and trajectories of cigarette smoking
Exposure to cigarette coupons exhibited a dose-response relationship with changes in cigarette smoking behaviours over time, promoting smoking progression and hindering smoking cessation especially among women and people with lower SES. Prohibiting these coupons can be an important tobacco control strategy
Current Tobacco Use Trends and Harm Perceptions Among High School Students by Asthma Status and Sex, 2012‐2018
BACKGROUND: Tobacco use is known to worsen asthma management. No studies have investigated how trends in youth tobacco use and related harm perceptions vary by asthma status and sex. This study examined these trends among Florida high school students during 2012-2018. METHODS: Data from the 2012, 2014, 2016, and 2018 Florida Youth Tobacco Survey were analyzed. Public high school students (grades 9-12) with known asthma status were included along …
Race, Concern About Covid-19 Discrimination, and Cigarette Smoking Behavior
Exploring the Experiences and Perceptions of Cigar Craving and Addiction among Young Adult Black Cigar Smokers
Black young adults have the highest prevalence of cigar smoking in the U.S. Little is known about how this population perceives addiction to cigar smoking, which may influence long-term smoking and cessation outcomes. This study used semi-structured in-depth interviews to understand cravings, triggers, and perceived addiction from cigar smoking among a purposive sample of Black young adult cigar smokers ( N = 40; 21-29 years). An iterative proces…
Physical and Sociocultural Community-Level Influences on Cigar Smoking among Black Young Adults
Black young adults experience disparately high rates of cigar use and its health consequences. Little research has explored community-level influences on cigar smoking in this population, especially concerning product-specific influences and cigar smokers' perceptions. We conducted in-depth interviews with 40 Black young adult (ages 21-29) cigar smokers in the Washington, D.C. area and analyzed themes regarding physical and sociocultural communit…
Exploring the hypothetical impact of flavored cigar sales restrictions among black young adult cigar smokers
This study assessed the hypothetical impact of flavored cigar sales restrictions on cigar smoking among Black young adult cigar smokers (ages 21-29). Forty in-depth interviews were conducted in 2020. Interviews were independently coded and analyzed using thematic analysis. When asked how they would smoke cigars given a flavor sales restriction, half of participants reported they would smoke in the same way, a third would stop or reduce smoking, a…
Noticing people, discounts and non-tobacco flavours in e-cigarette ads may increase e-cigarette product appeal among non-tobacco-using young adults
Attention to several e-cigarette ad features (eg, people, discounts, non-tobacco flavours) was associated with increased e-cigarette product appeal, whereas attention to nicotine warnings and smoking cessation claims was associated with reduced appeal among non-tobacco-using young adults. Restricting appeal-promoting features while strengthening the effects of nicotine warnings and smoker-targeted claims in e-cigarette ads may potentially reduce …
Variations in Substance Use and Disorders Among Sexual Minorities by Race/Ethnicity
Purpose Little is known about racial/ethnic minority substance use and disorder-related disparities among sexual minorities as compared to their heterosexual counterparts. This study aimed to understand the associations between sexual minority status and substance use and disorders among U.S. adults stratified by race/ethnicity. Methods: We analyzed data from a sample of U.S. adults (n = 35,981) surveyed during the 2012–2013 National Epidemiologi…
Cigar-Smoking-Cessation Interest and Experience among Black Young Adults
Although Black/African American populations have high cigar-smoking prevalence, little is known about cigar-smoking cessation among this group. This study explored the perceptions and experiences of cigar-smoking cessation and assistance received from healthcare providers among forty Black young-adult cigar smokers (ages 21-29). Semi-structured in-depth phone interviews were transcribed and coded. Qualitative data were analyzed by using thematic …
E-cigarette-inclusive smoke-free policies, excise taxes, tobacco 21 and changes in youth e-cigarette use
State-level ESF and T21 policies could be effective for limiting growth of youth e-cigarette use despite an overall national increase. Higher e-cigarette excise tax rates may be needed to effectively reduce youth e-cigarette use
Effect of a ‘tobacco-free nicotine’ claim on intentions and perceptions of Puff Bar e-cigarette use among non-tobacco-using young adults
Puff Bar's tobacco-free nicotine claim may increase non-tobacco-using young adults' intentions of using Puff Bar and reduce harm perceptions and negative expectancy towards using Puff Bar. The claim may also prompt the use of Puff Bar over other e-cigarette brands and types. These findings are concerning given the health effects and regulations for tobacco-free nicotine products are not immediately clear
Price promotion receipt and use progression of any tobacco, cigarettes, e-cigarettes and cigars among US youth between 2016 and 2018
Receiving price promotions for any tobacco and e-cigarettes was respectively associated with the use progression of any tobacco and e-cigarettes. Continuous monitoring of tobacco marketing activities is needed to identify youth-appealing price promotion tactics
Point-of-sale cigarette pricing strategies and young adult smokers’ intention to purchase cigarettes
Availability of cigarette price discounts, price tiers and pack/carton could potentially influence cigarette purchasing behaviours among young adult smokers. Regulating these marketing strategies may, therefore, reduce education-related smoking disparities
Heterogeneity in Tobacco-Use Behaviors Among U.S. Blacks per Global Region of Origin
Cigar package quantity and smoking behavior
Although we found consistent associations between package quantity and price, we found few associations between package quantity and changes in cigar smoking behaviors over time, particularly for cigarillos and large cigars. Key limitations include our adult-only analyses and inability to determine the package quantity that cigar users initiated with. Future studies could examine whether package quantity plays a causal role in filtered cigar use …
Sources of Awareness of Juul E-cigarettes in 2 Surveys of Adults in the United States
Objectives: Since their introduction in 2015, JUUL e-cigarettes have gained >60% of the United States (US) 2018 retail market share among branded e-cigarette companies. The sources through which consumers learn about JUUL e-cigarettes is not known. Methods: We assessed the sources of awareness about JUUL through 2 cross-sectional surveys of US adults (Survey 1: 502 18-24 year-olds; Survey 2: 803 smokers age 18+). Primary measures were awareness o…
Methodological Approaches to Understanding Causes of Health Disparities
Understanding health disparity causes is an important first step toward developing policies or interventions to eliminate disparities, but their nature makes identifying and addressing their causes challenging. Potential causal factors are often correlated, making it difficult to distinguish their effects. These factors may exist at different organizational levels (e.g., individual, family, neighborhood), each of which needs to be appropriately c…
Young Adults’ Favorable Perceptions of Snus, Dissolvable Tobacco Products, and Electronic Cigarettes
Objectives. We explored young adults’ perceptions of snus (spitless moist snuff packed in porous bags), dissolvable tobacco products, and electronic cigarettes and intention to try these products. Methods. We conducted 11 focus group discussions involving a total of 66 young adults (18–26 years old) on these new tobacco products (e.g., harmfulness, potential as quit aids, intention to try) held between July and December 2010. We analyzed discussi…
Characteristics Associated With Awareness, Perceptions, and Use of Electronic Nicotine Delivery Systems Among Young US Midwestern Adults
Objectives. We assessed the characteristics associated with the awareness, perceptions, and use of electronic nicotine delivery systems (e-cigarettes) among young adults. Methods. We collected data in 2010–2011 from a cohort of 2624 US Midwestern adults aged 20 to 28 years. We assessed awareness and use of e-cigarettes, perceptions of them as a smoking cessation aid, and beliefs about their harmfulness and addictiveness relative to cigarettes and…
Frequency and Characteristics Associated With Exposure to Tobacco Direct Mail Marketing and Its Prospective Effect on Smoking Behaviors Among Young Adults From the US Midwest
Objectives. We examined the exposure to tobacco direct mail marketing and its effect on subsequent smoking behaviors in a US Midwest regional cohort of young adults. Methods. Data were collected from 2622 young adults (mean age = 24 years) in 2010 to 2011 (baseline) and 2011 to 2012 (follow-up). We collected information on demographics, tobacco use, and exposure to tobacco direct mail materials in the previous 6 months at baseline. Smoking behavi…
The reciprocal relationships between changes in adolescent perceived prevalence of smoking in movies and progression of smoking status
Perceived exposure to movie smoking primarily influenced teenagers' smoking behaviour at younger ages. If future studies confirm this finding, developing and evaluating interventions to improve young teenagers' resistance to these images may complement policies to reduce smoking in movies to reduce prevalence of adolescent smoking
Receipt and redemption of cigarette coupons, perceptions of cigarette companies and smoking cessation
Our findings suggest a negative association between cigarette coupons and smoking cessation. Longitudinal studies are needed to establish whether cigarette coupons influence smoking behaviour to inform the necessity for policies to prohibit the use of these coupons to assist smokers to quit smoking
Awareness, perceptions and use of snus among young adults from the upper Midwest region of the USA
In this regional sample of US young adults, the majority of young adults were aware of snus, and over one in 10 had used snus. More young adults in the sample than the overall US adult population believed that snus is less harmful than cigarettes. Perceptions of snus are associated with snus use. Strategic health communication interventions targeting young adults to confront the positive perceptions associated with snus may be needed to curb the …
Young Adults’ Favorable Perceptions of Snus, Dissolvable Tobacco Products, and Electronic Cigarettes
Objectives. We explored young adults’ perceptions of snus (spitless moist snuff packed in porous bags), dissolvable tobacco products, and electronic cigarettes and intention to try these products. Methods. We conducted 11 focus group discussions involving a total of 66 young adults (18–26 years old) on these new tobacco products (e.g., harmfulness, potential as quit aids, intention to try) held between July and December 2010. We analyzed discussi…
Minnesota smokers’ perceived helpfulness of 2009 federal tobacco tax increase in assisting smoking cessation
A significant proportion of smokers in our sample thought the 2009 federal tobacco tax increase was helpful in assisting smoking cessation, particularly among smokers of lower socio-economic status. Health communication interventions to promote cigarette tax increases as an opportunity for smoking cessation may further assist quit attempts
Availability of snus and its sale to minors in a large Minnesota city
Prevalence of snus sales to minors appeared to be higher than that of cigarette sales to minors according to the 2011 Synar report. Futures studies are needed to determine whether tobacco retailers are more likely to sell snus than cigarettes to minors. Interventions such as public and retailer policies are needed to reduce the likelihood of tobacco retailers selling snus to minors
Characteristics Associated With Awareness, Perceptions, and Use of Electronic Nicotine Delivery Systems Among Young US Midwestern Adults
Objectives. We assessed the characteristics associated with the awareness, perceptions, and use of electronic nicotine delivery systems (e-cigarettes) among young adults. Methods. We collected data in 2010–2011 from a cohort of 2624 US Midwestern adults aged 20 to 28 years. We assessed awareness and use of e-cigarettes, perceptions of them as a smoking cessation aid, and beliefs about their harmfulness and addictiveness relative to cigarettes and…
Frequency and Characteristics Associated With Exposure to Tobacco Direct Mail Marketing and Its Prospective Effect on Smoking Behaviors Among Young Adults From the US Midwest
Objectives. We examined the exposure to tobacco direct mail marketing and its effect on subsequent smoking behaviors in a US Midwest regional cohort of young adults. Methods. Data were collected from 2622 young adults (mean age = 24 years) in 2010 to 2011 (baseline) and 2011 to 2012 (follow-up). We collected information on demographics, tobacco use, and exposure to tobacco direct mail materials in the previous 6 months at baseline. Smoking behavi…
Tobacco product prices before and after a statewide tobacco tax increase
A large tobacco tax resulted in an average retail cigarette price exceeding the tax, suggesting the industry over-shifted the cigarette tax increase to consumers in Minnesota. The findings support the known public health benefit of tobacco tax increases while highlighting the need for additional information about how, or if, tobacco companies use price promotions to blunt the impact of tax increases
The associations between exposure to tobacco coupons and predictors of smoking behaviours among US youth
Tobacco coupons may promote smoking and hinder smoking cessation among youth. Regulating tobacco coupons may reduce youth smoking in the USA. Further research is needed to determine the effect of tobacco coupons on youth tobacco use globally
Snus Use and Smoking Behaviors
The effect of snus use on smoking behaviors among US young adults is largely unknown. Data from the Minnesota Adolescent Community Cohort Study collected in 2010 to 2011 and 2011 to 2012 (participants aged 20–28 years) showed that young adult nonsmokers who had tried snus were subsequently more likely than those who had not tried snus to become current smokers (n = 1696; adjusted odds ratio = 1.79; 95% confidence interval = 1.01, 3.14). Snus use …
Changes in cigarette expenditure minimising strategies before and after a cigarette tax increase
Socially disadvantaged smokers were most likely to use CEMS and continue smoking after a cigarette tax increase. Regulations that would reduce CEMS use could boost the effectiveness of cigarette tax increases
Banning tobacco price promotions, smoking-related beliefs and behaviour
Differential associations emerged between exposure to price promotions, smoking-related beliefs and behaviour across countries with and without a price promotions ban. Adopting price promotion bans could ameliorate the associations between exposure to price promotions and smoking beliefs and behaviours
Differences in Cigarette Use and the Tobacco Environment Among Youth Living in Metropolitan and Nonmetropolitan Areas
PURPOSE: To examine cigarette use and the tobacco-related environment among adolescents living in metropolitan and nonmetropolitan areas. METHODS: Data from adolescents ages 14-17 that completed the 2012 Florida Youth Tobacco Survey were analyzed (n = 40,746). This includes a representative sample of middle and high school students throughout the state. RESULTS: Nonmetropolitan adolescents were more likely than metropolitan adolescents to report …
Prevalence and characteristics of secondhand smoke and secondhand vapour exposure among youth
Almost one-third of Florida youth reported SHV exposure. Factors associated with SHS and SHV exposure are somewhat similar, and exposure to SHS and SHV is associated with tobacco susceptibility in youth. Promoting tobacco-free homes is needed to protect youth from SHS and SHV exposure
Thank you to our reviewers
Transitions in electronic cigarette use among adults in the Population Assessment of Tobacco and Health (Path) Study, Waves 1 and 2 (2013–2015)
This study suggests that e-cigarette use patterns are highly variable over a 1-year period. This analysis provides the first nationally representative estimates of transitions among US adult e-cigarette users. Future research, including additional waves of the PATH Study, can provide further insight into long-term patterns of e-cigarette use critical to understanding the net population health impact of e-cigarettes in USA
Receipt of tobacco direct mail/email discount coupons and trajectories of cigarette smoking behaviours in a nationally representative longitudinal cohort of US adults
Tobacco direct mail/email coupons encourage and sustain smoking and disproportionately affect lower socioeconomic populations
Adoption of Tobacco- and Smoke-Free Policies in a US National Sample of Postsecondary Educational Institutions
Objectives. To examine the institutional characteristics associated with the adoption of tobacco- and smoke-free policies among US postsecondary educational institutions. Methods. In 2017, we collected information on tobacco policy types and institutional characteristics of a national sample of US postsecondary educational institutions (n = 605) attended by the participants of the NEXT Generation Health Study. We used logistic regression to exami…
Heterogeneity in Tobacco-Use Behaviors Among U.S. Blacks per Global Region of Origin
Cigar package quantity and smoking behavior
Although we found consistent associations between package quantity and price, we found few associations between package quantity and changes in cigar smoking behaviors over time, particularly for cigarillos and large cigars. Key limitations include our adult-only analyses and inability to determine the package quantity that cigar users initiated with. Future studies could examine whether package quantity plays a causal role in filtered cigar use …
Sources of Awareness of Juul E-cigarettes in 2 Surveys of Adults in the United States
Objectives: Since their introduction in 2015, JUUL e-cigarettes have gained >60% of the United States (US) 2018 retail market share among branded e-cigarette companies. The sources through which consumers learn about JUUL e-cigarettes is not known. Methods: We assessed the sources of awareness about JUUL through 2 cross-sectional surveys of US adults (Survey 1: 502 18-24 year-olds; Survey 2: 803 smokers age 18+). Primary measures were awareness o…
Methodological Approaches to Understanding Causes of Health Disparities
Understanding health disparity causes is an important first step toward developing policies or interventions to eliminate disparities, but their nature makes identifying and addressing their causes challenging. Potential causal factors are often correlated, making it difficult to distinguish their effects. These factors may exist at different organizational levels (e.g., individual, family, neighborhood), each of which needs to be appropriately c…
Variations in Substance Use and Disorders Among Sexual Minorities by Race/Ethnicity
Purpose Little is known about racial/ethnic minority substance use and disorder-related disparities among sexual minorities as compared to their heterosexual counterparts. This study aimed to understand the associations between sexual minority status and substance use and disorders among U.S. adults stratified by race/ethnicity. Methods: We analyzed data from a sample of U.S. adults (n = 35,981) surveyed during the 2012–2013 National Epidemiologi…
Cigar-Smoking-Cessation Interest and Experience among Black Young Adults
Although Black/African American populations have high cigar-smoking prevalence, little is known about cigar-smoking cessation among this group. This study explored the perceptions and experiences of cigar-smoking cessation and assistance received from healthcare providers among forty Black young-adult cigar smokers (ages 21-29). Semi-structured in-depth phone interviews were transcribed and coded. Qualitative data were analyzed by using thematic …
Medicine (42 obras) · Smoking Behavior and Cessation (39 obras) · Environmental health (37 obras) · Demography (28 obras) · Demography (20 obras) · Psychology (20 obras) · Population (17 obras) · Logistic regression (16 obras) · Business (15 obras) · Internal Medicine (15 obras)