Body Mass Index and Methamphetamine pdf

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Running Head: STUDY PROSPECTUS
Study Prospectus
Body Mass Index and Methamphetamine Use by Sexual Orientation among Chicago Youth

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STUDY PROSPECTUS
Prospectus
Body Mass Index and Methamphetamine Use and correlation with sexual Orientation among
Chicago Youth
Problem Statement
Two of the most challenging health problems in America today are obesity and substance
use in young people (Barry and Petry, 2009). Obesity, defined as a body mass index (BMI)
greater than 30 kg/m2, has a prevalence rate 33% of men and 35% of women among American
Adults in 2005-2006 (Ogden, 2007). Obesity will cost U.S. health care $344 billion a year.
Methamphetamine is classified as an illicit substance and it is highly addictive central nervous
system stimulant that can be injected, snorted, smoked, or ingested orally.
The use of methamphetamines is increasing among college students. Approximately 85-
90 percent of stimulant-related drug deaths involve methamphetamine, and 5,716 people died as
a result of stimulant overdose in 2015 (U.S. Department of Justice, 2017). Chicago has a higher
obesity and methamphetamine use rate as compared to other major cities in USA (YRBS, 2018).
The obesity rate is 18.2 % in Chicago, 13.5% in New York, and 16.4% in LA which are higher
than national obesity rate 14.8% in 2017 (CDC. 2018). The methamphetamine use rate is 4.7% in
Chicago which is higher than 2.7% in Los Angles 3.5% in San Francisco, 4.2% in Miami-Dade
County, and almost double than the national methamphetamine use rate of 2.5 % in 2017 (CDC.
2018).
Both obesity and drug addiction have been linked to a dysfunction in the brain’s reward
system. The study found that a higher body mass index (BMI) was associated with lower illicit
drug use in a sample of young adult males (Blüml, et al. 2011). There is a correlation between
the drug and obesity, the drug is used to reduce body weight as well as depression. What is less

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understood is whether there are additional factors that impact the relationship between BMI and
methamphetamine use. Research indicates that there is a close relationship between sexual
orientation and BMI.
Smith and colleagues (2010) found that sexual minority females have higher body mass
index (BMI) and sexual minority males have lower BMI than their same-gender heterosexual
counterparts. There is also a known connection between sexual orientation and
methamphetamine use. Results of a meta-analysis conducted by Marshal et al. (2008) showed
that lesbian, gay and bisexual youth reported significantly higher rates of substance abuse,
including methamphetamine use, as opposed to their heterosexual counterparts.
There is a relationship between methamphetamine use and sexual encounters. During
three month evaluation period the drug was used during sex. When the drug is used rarely during
sex by six people it gives a total of 12% but when used always it gives 61%. This clearly shows
there is correlation between the drug and sex. Methamphetamine is highly linked with the
tendency of unprotected sex and behavior which are violent.
Purpose of the Study
The purpose of this study will be to determine whether sexual orientation influences
relationship between BMI and methamphetamine use in a population with higher rates of obesity
and methamphetamine use rates. The proposed study will use data from the Youth Risk
Behavioral Surveillance System (YRBS) in Chicago to examine the association between BMI
and methamphetamine use by sexual orientation.
Significance
The study will be helpful in addressing the research gap regarding the complex
association between BMI and methamphetamine use, and generate knowledge that can be used to

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understand factors that might impact youth behavior and early stages of drug addiction. The
study outcomes will be helpful for public health interventions to prevent drug addiction among
adolescents with the possibility of reducing morbidity and mortality related to obesity and drug
use (Vera-Villarroel et al. 2014).
Background
1. Barry and Petry (2009) investigated the role of gender in the association between body
mass index and substance use.
2. Barry, Clarke, and Petry (2010) conducted research focusing on obesity and its
relationship to addiction. The research aimed to determine whether overeating leads to
addictive behavior.
3. Blüml et al. (2011) suggested that a higher BMI was associated with lower illicit drug use
in a sample of young adult males.
4. Herrmann and Blackstone (2015) reported a significant relationship between the number
of illicit drugs used and body mass index.
5. Smith et al. (2010) study suggested that lesbian women had a significant higher risk of
becoming obese than heterosexual women. The sexual orientation associated with BMI
and played vital role in development of obesity.
6. Vera-Villarroel, Piqueras, Kuhne, Cuijpers, and Van Straten (2014) identified a
significant relationship between men and women in self-reported body mass index and
drug use. The study results could play a vital role in public health interventions to prevent
drug addiction among teenagers.
7. Eliason, et al. (2014), A systematic review of the literature found sexual minority women
have greater weight than heterosexual women, and lesbian and bisexual women had

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significantly greater body mass index (BMI) or a higher percentage with a BMI over 30
than heterosexual women.
Theoretical Framework
The most appropriate theoretical model for this research study is Bandura's (2002) social
cognitive theory (SCT). Bandura's (2002) SCT offers a likely framework to explain behaviors
related to obesity and drug use among youth. Oldenburg, French, and Glanz (1999) explained a
similar concept of SCT based on environmental factors. Because environmental factors are not
used for this study, below is the modify version of Bandura's model 1986 (Figure 1).
Figure 1. Modification of Bandura's theory, Based on Pajares (2002)
The modified Bandura model was developed to demonstrate how personal and behavioral
factors are the major risk factors in the study population. SCT helps to explain how sexual
orientation (personal factors) impact relationship of body mass index and methamphetamine use
(behavior factors). SCT is based on the factors likely to determine a behavior change and how
these factors could influence specific behavioral change (Bandura, 1986).
Research Questions and Hypotheses
The following research question and hypotheses will be addressed in this study:
1. Is there an association between Body Mass Index and Methamphetamine use by sexual
orientation among Chicago youth?
Personal Factors
(Cognitive, affective,
and biological events)
Behavior
(Risky behaviors)

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H0: There is no statistically significant association between Body Mass Index and
Methamphetamine use by sexual orientation among Chicago youth?
H1: There is a statistically significant association between Body Mass Index and
Methamphetamine use by sexual orientation among Chicago youth?
Nature of the Study
This study will utilize quantitative research, specifically secondary data analysis,
consistent with understanding the relationship between BMI and methamphetamine use by
sexual orientation. Data will be drawn from the YRBS national school-based survey conducted
by the CDC (CDC. 2018). The target population will be Chicago youth and data will come from
the last ten year collected, 2007 - 2017. The YRBS dataset contains 124 variables collected for
1883 participants; however, in the analysis, eight variables (city, year, weight, age, bmi, sexual
orientation, methamphetamine use) will be used to determine the relationship between BMI and
methamphetamine use by sexual orientation.
Secondary Data Types and Sources of Information
The secondary data source is the Youth Risk Behavior Survey (YRBS), a national school-
based survey conducted by CDC as well as school-based state, territorial, tribal, and large urban
school district surveys conducted by education and health agencies (CDC. 2018). The survey
population includes students in grades 9–12 attending U.S. high schools, but this study will focus
only on Chicago youth.
Possible Analytical Strategies
SPSS version 24.0 will be used to analyze the collected data. Descriptive and inferential
statistics will be used to summarize the data. Multiple logistic regression analysis will be used to
answer the study’s research question.

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References
Addiction Center. (2018, September 10). Statistics of Addiction in America. Addiction Statistics.
Retrieved from https://www.addictioncenter.com/addiction/addiction-statistics/
Bandura, A. (2002). Social cognitive theory in cultural context. International Association
for Applied Psychology, 51(2), 269-290.
Bandura, A. (1987). Self-efficacy: The Exercise of Control. New York: Freeman.
Bandura, A. (1986). Social Foundations of Thought and Action: A Social Cognitive
Theory. Englewood Cliffs, NJ: Prentice Hall.
Barry, D., & Petry, N. M. (2009). Associations between body mass index and substance use
disorders differ by gender: results from the National Epidemiologic Survey on Alcohol
and Related Conditions. Addictive behaviors, 34 (1): 51-60. doi:
10.1016/j.addbeh.2008.08.008. Retrieved
from https://www.biomedarticles.com/articles/detail/18819756
Barry, D., Clarke, M., & Petry, N. M. (2010). Obesity and its relationship to addictions: is
overeating a form of addictive behavior? The American journal on addictions, 18 (6):
439-51. doi: 10.3109/10550490903205579. Retrieved from
https://www.biomedarticles.com/articles/detail/19874165

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Blüml, V., et al. (2011, December 15). Relationship between Substance Use and Body Mass
Index in Young Males. The American Journal of Addictions. Retrieved
from https://doi.org/10.1111/j.1521-0391.2011.00192.x
CDC. (2018). Compare District and National Results. YRBSS Fact Sheets and Comparison of
State/District and National Results. YRBSS Results. Adolescent and School Health.
Centers for Disease Control and Prevention. Retrieved from
https://www.cdc.gov/healthyyouth/data/yrbs/results.htm
Eliason, M. J., Ingraham, N., Fogel, S. C., McElroy, J. A., Lorvick, J., Mauery, D. R., & Haynes,
S. (2014). A systematic review of the literature on weight in sexual minority women.
Women's health issues: official publication of the Jacobs Institute of Women's Health, 25
(2): 162-75. doi: 10.1016/j.whi.2014.12.001. Retrieved from
https://www.biomedarticles.com/articles/detail/25747521
Herrmann, L., and Blackstone, S. (2015, April 4). Relationships Between Illicit Drug Use and
Body Mass Index Among Adolescents. Health Education & Behavior. Vol 43, Issue 1,
pp. 21 – 24. Retrieved from https://doi.org/10.1177/1090198115579414
Marshal, M. P., Friedman, M. S., Stall, R., King, K. M., Miles, J., Gold, M. A., ...Morse, J. Q.
(2008). Sexual orientation and adolescent substance use: a meta-analysis and
methodological review. Addiction (Abingdon, England), 103 (4): 546-56. doi:
10.1111/j.1360-0443.2008.02149.x. Retrieved from
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2680081/
Oldenburg, B., French, M., & Glanz, K. (1999). The application of staging models to the
understanding of health behavior change and the promotion of health. Psychology
& Health, 14(3), 503-517.

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Smith, H. A., Markovic, N., Danielson, M. E., Matthews, A., Youk, A., Talbott, E. O., ...Hughes,
T. (2010). Sexual abuse, sexual orientation, and obesity in women. Journal of women's
health (2002), 19 (8): 1525-32. doi: 10.1089/jwh.2009.1763. Retrieved from
https://www.biomedarticles.com/articles/detail/20524896
U.S. Department of Justice (2017). National Drug Threat Assessment Oct 2017. Drug
Enforcement Administration. Retrieved from
https://www.dea.gov/sites/default/files/docs/DIR-040-17_2017-NDTA.pdf
Vera-Villarroel, P., Piqueras, J. A., Kuhne, W., Cuijpers, P., & van Straten, A. (2014).
Differences between men and women in self-reported body mass index and its relation to
drug use. Substance abuse treatment, prevention, and policy, 9 1. doi: 10.1186/1747-
597X-9-1. Retrieved from https://www.biomedarticles.com/articles/detail/24383608