Young Adult Drug Involvement Research Assessment (YADIRA) Laboratory

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(301) 405-0818

The Young Adult Drug Involvement Research Assessment (YADIRA) Lab focuses on racial and ethnic health disparities in substance use and dependence, specifically tobacco and marijuana use among urban youth and young adult populations.

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Welcome to the YADIRA Labratory. The YADIRA Lab is housed in the Department of Behavioral and Community Health in the School of Public Health at the University of Maryland. The laboratory aims to elucidate the complex issues associated with the unique experiences of racial and ethnic youth and young adult tobacco users that reside in “pro-smoking” urban environments. ​


Dr. Craig S. Fryer

Dr. Fryer obtained his MPH from the University of Pittsburgh in Behavioral and Community Health Sciences with a concentration in child welfare and his DrPH in Sociomedical Sciences from Columbia University with an emphasis in the social determinants of health behavior and health outcomes.

Trained as behavioral scientist, Dr. Fryer utilizes mixed methods research designs to examine the sociocultural context of health and health status, with an emphasis in community-engaged research. His work focuses on racial and ethnic health disparities in substance use and dependence, specifically tobacco and marijuana use among urban youth and young adult populations.

Dr. Fryer is the Principal Investigator of the five-year, NIH-funded (National Cancer Institute) K01 career development award, Correlates of Nicotine Dependence among Urban African American Youth. Additionally, he is a Co-Investigator on a FDA/NCI-funded, Assessing Risk Perceptions for Small Cigars/Cigarillos among Young Adults and three grants within the Center for Health Equity funded by the National Institute for Minority Health and Health Disparities (NIMHD). Collateral research endeavors include: African American men’s health; behavioral intervention research; and the respectful, recruitment and retention of underrepresented communities in research.

Elizabeth Seaman

Elizabeth is a doctoral candidate in the Behavioral and Community Health Department. Prior to coming to UMD, Elizabeth earned an AB in Psychology from Georgetown University in 2012 and a Master of Health Science with a focus in Mental Health from Johns Hopkins Bloomberg School of Public Health in 2013. Elizabeth's research interests include young adult marijuana and tobacco use, mental health and health disparities.

Joanne D'Silva

Joanne D’Silva completed her BS in Psychology and MPH in Social and Behavioral Sciences from the University of Florida. Her research examines tobacco-related disparities among racial and ethnic minority populations, with an emphasis on community-based approaches to reduce the burden of health disparities. She is also interested in the dissemination and translation of strategies to inform programs and policies aimed at advancing health equity.

Tobacco Involvement Mixed Methods (TIMM) Study (2015-present)


Abstract: Health disparities continue to exist between and within populations and little is known about the causes of population differences observed in tobacco use, nicotine dependence, and related diseases. More importantly, an age-race paradox exists in which African American youth consistently report lower prevalence of tobacco use than their Caucasian counterparts, yet African American adult smokers suffer a disproportionate burden of tobacco-related morbidity and mortality. Nicotine dependence is the most formidable impediment to quitting smoking among adolescents. Despite the recognition of the central role of nicotine dependence in smoking cessation, there is a paucity of information about how nicotine dependence is expressed among youth who smoke. For these reasons, researchers have called for additional research to address the insufficient understanding of and gap in the literature on adolescent nicotine dependence and its impact on cessation.

Study Purpose: The aim of this study is to examine critical factors of nicotine dependence among urban African American youth utilizing individual and group (class) trajectory analysis (Study 1) as well as mixed methods research, including the use of a tobacco health survey, focus groups, and in-depth interviews (Study 2) to elucidate the complexities of adolescent nicotine dependence.


Marijuana Health Outcomes Tobacco Environment Pilot (MHOTEP) Study (2009-2011)


Abstract: Tobacco use is still an important health issue among young people. For example, the majority of adult smokers began smoking before the age of 18 and millions of youth are current smokers, including 27% of high school boys and 17.18% of high school girls. Additionally, we now know that dependence can manifest during adolescence before the onset of daily smoking and that young people are using multiple tobacco products, including cigarettes and little cigars. Most notably, racial and ethnic communities are targeted with pro-smoking advertising and suffer a disproportionate burden of tobacco-caused disease and mortality. Research that addresses factors that shape tobacco use among young populations is necessary to effectively enhance and develop both prevention and treatment modalities tailored for this often ignored and vulnerable group of smokers.

Study PurposeThe aim of this study is to gain a greater understanding of the experiences of young smokers with smoking (both tobacco and marijuana), including the influence of social (family, friends) and environmental (neighborhood) factors such as stress, tobacco advertising, social sources of cigarettes, and the use of other tobacco products.

Lab News

Summer 2016



This summer Ms. D'Silva is a Research Fellow at the Schroeder Institute for Tobacco Research and Policy Studies at the Truth Initiative in Washington, DC. The Schroeder Institute uses rigorous science to identify the most effective means to minimize the harms of tobacco use, measure the effectiveness of interventions and identify best practices for tobacco control. Working with investigator Dr. Amy Cohn, Ms. D'Silva's work will examine racial and ethnic differences in initiation of tobacco use among young adults aged 18-34.







Ms. Seaman recently began a predoctoral Cancer Research Training Award (CRTA) Fellowship at the National Cancer Institute in Rockville, MD. Ms. Seaman’s fellowship is in the Tobacco Control Research Branch within the Behavioral Research Program of the Division of Cancer Control and Population Sciences. At NCI, Ms. Seaman is working under the mentorship of Dr. Stephanie Land on several projects related to grants administration and research within tobacco control and cancer screening.

March 2016

Dr. Fryer, Ms. Seaman and Ms. D’Silva traveled to Chicago, IL to present research at the 2016 Society for Nicotine and Tobacco Research Annual Meeting.

  • Dr. Fryer presented a poster, "Does Cigar Use Predict Marijuana Use Among U.S. Young Adults? Evidence from AddHealth"
  • Ms. Seaman presented a poster, "'Ain't Nothing Easy About Quitting: Perspectives on Tobacco Use and Cessation from Young Black Smokers"
  • Ms. D’Silva presented on “Correlates of Menthol Cigarette Use among American Indian Smokers in Minnesota” and in a pre-conference workshop on “Building an evidence base for reducing smoking disparities between indigenous and non-indigenous peoples.” She enjoyed networking with indigenous research from around the globe and connecting with old colleagues and friends.

October 2015

Ms. D’Silva presented a poster entitled “An Examination of Trends in Tobacco Disparities by Socioeconomic Status in Minnesota” at the National Conference on Tackling Tobacco Use in Vulnerable Populations in Bethesda, MD. She also had the honor of meeting former acting Surgeon General, Boris Lushniak.

Recent Publications

FRYER, CS, Seaman EL, Clark RS, Plano Clark VL (2017). Mixed methods research in tobacco control with youth and young adults: A methodological review of current strategies. PLoS ONE 12(8): e0183471.

Sterling, KL, FRYER, CS, Pagano, I, Fagan, P. (2017). Flavored Cigar Misconceptions and Uncertainty: Identifying At-Risk Smokers, Tobacco Regulatory Science, 3(2 Suppl 1): S17-S30.

Trapl, ES, O'Rourke-Suchoff, D, Yoder, LD, Cofie, L, Frank, JL, FRYER, CS. (2017). Youth Acquisition and Situational Use of Cigars, Cigarillos, and Little Cigars: A Cross-Sectional Study. American Journal of Preventive Medicine, 52(1): e9-e16.

Sterling, KL, FRYER, CS, Pagano, I, Jones, D, Fagan, P. (2016). The Association between Menthol-Flavored Cigarette Smoking and Flavored Little Cigar and Cigarillo Use among African-American, Hispanic, and White Young Adult Smokers, Tobacco Control, 25 (Suppl 2): ii21-ii31.

Sterling, KL, FRYER, CS, Pagano, I, Fagan, P. (2016). Little Cigars and Cigarillos (LCCs) Use among Young Adult Cigarette Smokers in the U.S.: Understanding Risk of Concomitant Use Subtypes, Nicotine and Tobacco Research, 18(12): 2234-2242.

FRYER, CS, Passmore, SR, Maietta, R, Petruzzelli, JM, Casper, EC, *Brown, NA, Butler, JB, Garza, MA, Thomas, SB, Quinn, SC. (2016). The Symbolic Value and Limitations of Racial Concordance in the Recruitment of Minority Populations in Research. Qualitative Health Research, 26(6), 830-841.

Sterling, KL, FRYER, CS, and Fagan, P. (2016). “The Most Natural Tobacco Used”: A Qualitative Investigation of Young Adult Smokers’ Risk Perceptions of Flavored Little Cigars and Cigarillos (LCCs). Nicotine and Tobacco Research, 18(5), 827-833.

Sterling, KL, FRYER, CS, Nix, M, and Fagan, P. (2015). Appeal and Impact of Characterizing Flavors on Young Adult Small Cigar Use. Tobacco Regulatory Science, 1(1), 42-53.



For further information, collaboration, or volunteer opportunities, please contact:

Dr. Craig S. Fryer at or (301) 405-0818