American Indians (AI) have the highest smoking rates of any ethnic group in the US (40.8%), followed most closely by African Americans (24.3%) and Whites (23.6%). Additionally, AI women are the only group in whom smoking prevalence has increased over the past two decades, from 34.1% to 40.9%. Smoking rates among AI smokers vary by region and are highest in the Northern Plains 44.1%, and lowest in the Southwest 21.2%. AI smokers also have more difficulty quitting smoking compared to other ethnic groups, evidenced by their significantly lower quit ratios and are among the least successful in maintaining long term abstinence. While health disparities like these have existed for years among AI, the epidemiology of smoking and nicotine dependence has not been optimally described among this underserved population. Our prior work developing a smoking cessation program has revealed that although very high numbers of AI smoke, they typically smoke one-half the number of cigarettes per day compared with a smoker in the majority culture. We have also observed a younger age of initiation. As such, we now propose a formal investigation to understand these patterns. Such factors relating to tobacco use, nicotine dependence and metabolism maybe different between AI and the general U.S. population, and even among AI subgroups. These possible differences have not been previously investigated and must be studied if we are to make significant inroads in developing culturally relevant smoking prevention and cessation strategies for this population. Our overarching thematic hypothesis is that the susceptibility of AI to cigarette smoking and nicotine dependence and its consequences has both an underlying nicotine metabolism component as well as psychosocial, cultural, and environment causes. We are well-positioned to explore this issue for the first time in this population. Our objective is to establish a cohort of AI tribal college/university students to determine the predictors of smoking initiation (non-use to experimentation) and progression (experimentation to established use).

Public Health Relevance

Much of what is known about the process of smoking initiation and progression comes from quantitative studies with non-Native populations. Information related to smoking use among Al tribal college/university (TCU) students is entirely unknown and critically needs further investigation. This study will be the first of its kind among Al college students who are at the highest risk among all ethnic groups for tobacco dependence.

Agency
National Institute of Health (NIH)
Institute
National Institute on Minority Health and Health Disparities (NIMHD)
Type
Exploratory Grants (P20)
Project #
5P20MD004805-04
Application #
8426022
Study Section
Special Emphasis Panel (ZMD1-PA)
Project Start
2013-02-01
Project End
2015-01-31
Budget Start
2013-02-01
Budget End
2014-01-31
Support Year
4
Fiscal Year
2013
Total Cost
$128,526
Indirect Cost
$43,653
Name
University of Kansas
Department
Type
DUNS #
016060860
City
Kansas City
State
KS
Country
United States
Zip Code
66160
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Gajewski, Byron J; Jiang, Yu; Yeh, Hung-Wen et al. (2014) Teaching Confirmatory Factor Analysis to Non-Statisticians: A Case Study for Estimating Composite Reliability of Psychometric Instruments. Case Studies Bus Ind Gov Stat 5:88-101
Filippi, Melissa K; Pacheco, Joseph; James, Aimee S et al. (2014) American Indian Men's Perceptions of Breast Cancer Screening for American Indian Women. J Health Dispar Res Pract 7:25-34

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