Public Health Education and Promotion Commons^™

Optimal Control Applied To A Discrete Time Influenza Model, Paula Andrea Gonzalez Parra

Open Access Theses & Dissertations

For the last decades, mathematical epidemiological models have been used to understand the dynamics of infectious diseases and guide public health policy.

In particular, several continuous models have been considered to study influenza outbreaks and their controls policies. However, most epidemiological data is discrete; therefore, a discrete formulation is more convenient to compare collected data with the output of the model. We introduce a discrete time model in order to study optimal control strategies for influenza transmission.

In our model, we divide the population into four classes: susceptible, infectious, treated, and recovered individuals.

In particular, we evaluate the potential effect …

Development And Evaluation Of A Personalized Normative Feedback Intervention For Hispanic Youth At High Risk Of Smoking, Holly Mata

Open Access Theses & Dissertations

Despite reductions in overall smoking rates, data show that adolescents continue to smoke at higher rates than adults and that adolescents living in the Texas-Mexico border area are more likely than their counterparts living elsewhere in Texas to smoke. While adult smoking in the Paso del Norte Region has decreased significantly over the past decade, area youth smoking rates exceed both state and national averages. Recent estimates report cigarette smoking among El Paso youth in the past month to be slightly more than 28% as compared with 21% among Texas youth participating in the 2009 statewide Youth Risk Behavior Survey …

Assessment Of Intra-Urban Traffic-Related Air Pollution On Asthmatic Children's Exposure At Schools In The Paso Del Norte Region, Amit Ugamraj Raysoni

Open Access Theses & Dissertations

Traffic-related air pollution can be a major public health concern in any urban area. This problem is compounded in the Paso del Norte region that has experienced rapid economic growth, and a substantial number of people living in close vicinity of major roadways. The desert surroundings, arid weather, frequent temperature inversions, heavy border traffic at the international ports of entry between El Paso and Ciudad Juárez, and poorly maintained vehicle fleet further exacerbates this problem. A growing body of air quality and epidemiologic research has discerned the linkage between traffic emissions and respiratory disorders.

Initial health investigations in the Paso …

Application Of The Water Poverty Index In Border Colonias Of West Texas, Marcelo Korc

Open Access Theses & Dissertations

This study applied the Water Poverty Index (WPI) in border colonias and other rural areas of west Texas. The colonias are mostly unincorporated communities located primarily in New Mexico and Texas along the border with Mexico and are characterized by high poverty rates and substandard living conditions. In Texas, access to drinking water and sanitation services has been identified as one of the most significant determinants of health in over 350 colonias with about 50 thousand residents.

The WPI is a multidimensional measure that links household welfare with water availability. WPI components were identified and prioritized by a wide range …

Gender Differences In Food Habits, Beliefs, And Fast Food Consumption Among A Predominantly Hispanic College Student Population, Alma Xochitl Ortega Gomez

Open Access Theses & Dissertations

Fast food consumption in the United States (U.S.) has been increasing steadily during the last decades. This trend has been linked to the increased prevalence of overweight and obesity among the population (Barnard, 2010; Currie, Della Vigna, Moretti & Pathania, 2009). Several sociodemographic characteristics that have been associated with the likelihood of frequent fast food consumption include income, ethnicity, gender and age (Block, Scribner, DeSalvo, 2004; Bowman & Vinyard, 2004; Drewnoski & Darmon, 2005; Driskell et al., 2006; Morse & Diskell, 2009; Paeratakul et al., 2003). Most studies related to fast food consumption have been conducted in adult population, only …

Development Of A Novel Metallo-Lipid Microparticle Delivery System For A Leishmania Mexicana Dna Vaccine Candidate, Joanna B. Valencia

Open Access Theses & Dissertations

ABSTRACT

Background and Significance.

The leishmaniases are an important group of neglected tropical parasitic diseases caused by parasitic protozoa of the genus Leishmania. International health authorities estimate that 350 million people around the world are at risk for contracting leishmaniasis. Two million new cases occur each year and 12 million people are presently infected worldwide. Leishmaniasis is endemic throughout the Americas region including all of Central America, most of South America, Mexico and southern Texas. Leishmania is also considered a threat to the military readiness of U.S. troops deployed to the Middle East or Latin America.

First- and second-line treatments …

Awareness And Knowledge Of Hiv/Aids Among Female Indian University Students In South India And As Immigrants In The U.S.-Mexico Border Region, Thenral D. Mangadu

Open Access Theses & Dissertations

ABSTRACT

The prevention of HIV/AIDS is a major global public health goal. The Joint United Nations Programme on HIV and AIDS (UNAIDS) estimates that 33 million individuals are infected with HIV worldwide and over two million of these cases are from India. The main mode of transmission of HIV in India is heterosexual contact.

In the past decades there has been a steady increase in immigration rates from India to the U.S. Education and marriage are the main reasons for immigration from India to the U.S. In general, the frequently risky sexual and substance use behaviors of college students in …

Identifying Influential Observations Through The Intraclass Correlation Coefficient, Angel De Jesus Davalos

Open Access Theses & Dissertations

In this thesis, we analyze the performance of adapting the DFBETA statistic for identifying influential observations on the intraclass correlation coefficient under the assumptions of the one-way random effects model. Additionally, we introduce an approach for transforming negative intraclass correlation coefficient estimation values using the method of moments estimator. We apply this method on a data set of repeated blood pressure measurements, after which we will investigate implications of identifying influential observations.

Atopy In Us-Mexico Border Elementary School Children: A Pilot Study, Julia Laura Alvarez

Open Access Theses & Dissertations

Background and Significance. Atopy is a hypersensitivity disorder that mainly affects the mucous membranes and the skin. It is reported to be the most prevalent type of clinical allergy syndrome. Persons who have atopy suffer from various combinations of asthma, rhino-conjunctivitis and/or eczema. Atopy is defined as an inherited predisposition to generate IgE against common environmental allergens. Atopy is a type I hypersensitivity condition mediated by IgE immune response, while allergy is any excessive immune response to a foreign antigen. Thus, all atopic disorders are allergic response but some allergic conditions are not atopic per se.

The etiology of pediatric …

Experimental Study Of The Effects Of Green Tea, Alejandra Avila

Open Access Theses & Dissertations

Background. Leishmaniasis is a parasitic disease caused by an intracellular parasite belonging to the genus Leishmania. The cutaneous form of the disease causes often significant disfigurement, accelerates progression to clinical AIDS and tuberculosis, and is associated with a number of adverse economic, psychosocial, and nutritional consequences. An estimated 350 million persons are at risk for this globally distributed disease and 1.5-2 million new cases occur annually. Leishmaniasis is endemic in 88 countries on five continents. It is distributed throughout most of the Americas ranging from southern Texas to northern Argentina. It is also regarded as a threat to the readiness …

The Effects Of Self Management, Education And Their Combination On Glucose Control Among Hispanics Visting A Community Health Clinic, Isela De Baca

Open Access Theses & Dissertations

The purpose of the present study was to measure the impact of diabetes self-management instruction alone, and in combination with diabetes education, on glucose control among diabetic patients at a local community clinic. The researcher of the study was particularly interested in assessing whether self-management goals and diabetes classes positively influence A1C values in this sample.

For this study, the medical charts of 131 patients at Centro San Vicente Health Clinic, a Federally Qualified Community Health Center in El Paso, Texas were reviewed. In addition to collecting A1c values at pretest (baseline) and at three and six months post intervention, …

Predicting Walking Using The Theory Of Planned Behavior In A Worksite Wellness Setting., Lucia Hernandez

Open Access Theses & Dissertations

The study examined constructs from the Theory of Planned Behavior (TpB) as predictors of walking behavior among adult university employees. Specifically, attitudes, subjective norms, and perceived behavioral control towards walking were used to predict behavioral intentions to walk and concurrent walking behavior in a sample of adult university employees. The study is a secondary analysis of data already collected on a sample of 118 employees enrolled in a Worksite Wellness Program from a large southwestern university who completed a self-administered questionnaire regarding, TpB constructs and actual walking behavior. The questions from the survey where derived from the Theory of Planned …

What Motivates Young Latina Females Along The U.S. Mexico Border Region To Participate In Team Sports?, Dora A. Pichardo

Open Access Theses & Dissertations

Physical activity gives women and girls an overall better quantity of life and positive health benefits. Statistics indicate lack of participation in physical activity and exercise by the U.S. general population and among the Latino population in particular. The primary purpose of this study is to explore the variables that motivate young Latinas to play and eventually continue to stay involved in team sports. This is a survey correlational study including young Latina females a U.S.-Mexico border community. Statistical analysis included frequencies, means, and Pearson Product Momentum Correlations. Sixty-nine participants (12 to 15 years old) completed the survey. The response …

Safe Medication Use Among Hispanic College Students: Knowledge, Attitudes And Behaviors, Tania Guadalupe Quiroz

Open Access Theses & Dissertations

College students are at increased risk of medication errors. Research suggests that young adults are active users of over-the- counter (OTC) medications and other products that may increase the risk for negative health outcomes. Therefore, it is very important to analyze young adults' attitudes, beliefs, and behaviors about medication use among college students in order to provide them with the necessary information. Due to language and cultural factors, the issue is particularly relevant in U.S.-Mexico border communities. This casual-comparative study examined knowledge, attitudes, and behaviors regarding medication use among Hispanic college students. Data was collected through a survey developed by …

Health Risk And Health-Seeking Behaviors Of Migrant And Seasonal Farmworkers On The Us-Mexico Border, Claudia Delilah Saenz

Open Access Theses & Dissertations

Background and Significance

The estimated 1–3 million migrant and seasonal farmworkers (MSFW) employed in the U.S. play a crucial role in assuring the success of the multi-billion dollar agricultural industry and the nation's access to a safe and nutritious food supply. This predominantly Mexican immigrant occupational group is documented to be at–risk for chronic and infectious disease morbidity and premature mortality but published studies are limited which describe their reproductive/sexual health, mental health, substance abuse, and workplace violence situation. Prior studies are especially scant regarding U.S.–Mexico border MSFW.

Objectives and Hypothesis

The major objective of the pilot study was to …

Evaluation Of A Community-Based Cervical Cancer Education Program On Perceptions And Knowledge Of Screening Among Low-Income Hispanic Women, Claudia S. Lozano

Open Access Theses & Dissertations

Cervical cancer affects Hispanic women disproportionately in comparison to their non-Hispanic white counterparts. In 2004, the incidence rate was 12.2 per 100,000 persons among Hispanic women compared to 7.5 per 100,000 among non-Hispanic white women (U.S. Cancer Statistics Working Group, 2007). Although this form of cancer is easily diagnosed through recommended screening tests, Hispanic women are often less likely to get screened (U.S. Department of Health and Human Services, 2000). Research based on the Health Belief Model (HBM) examining attitudes and beliefs about cervical cancer and screening among Hispanic women has demonstrated that non-compliance with Pap smear screening was attributed …

The Association Of Dust Events With Asthma Exacerbation In The U.S.-Mexico Border Children: A Pilot Study, Monika Gaytan

Open Access Theses & Dissertations

Background. Asthma is one of the most prevalent chronic pediatric illnesses in the U.S. and a major cause of childhood disability, hospitalization, and missed schooldays. Air pollution is one of a number of known environmental triggers known to exacerbate pediatric asthma. Emerging evidence also suggests that exposure to dust aerosols associated with dust storm events may trigger asthmatic symptoms. The Paso del Norte (PDN) region is the single most dust-prone major metropolitan area in the U.S., averaging 14.5 major dust events/yr. The annual peak in dust event activity occurs during March to May where there is a 42% chance of …

Prenatal Physical Activity Patterns And Determinants In An Urban Ecuadorian Population, Erika Gonzalez Beltran

Open Access Theses & Dissertations

Background & Significance. Evidence has accumulated over the past two decades suggesting that healthy pregnant women who engage in regular moderate physical activity (PA) may reduce their risk for certain adverse pregnancy and postnatal health outcomes. The U.S. Department of Health and Human Services (DHHS)/Centers for Disease Control and Prevention (CDC) recently issued the 2008 Physical Activity Guidelines for Americans which recommends at least 150 minutes/week of moderate-intensity aerobic PA for pregnant women. The American College of Obstetricians and Gynecologists (ACOG, 2002) recommends 30 min of moderate-intensity PA, specified as derived from recreational or leisure activities on most or all …

The Relation Of Alcohol Expectancies To Alcohol Consumption And Alcohol-Related Problems Among College Students, Michelle Nicholle Greco

Open Access Theses & Dissertations

The purpose of the present study was to examine the relationships among positive and negative alcohol expectancies and alcohol consumption and alcohol-related problems in a sample of Hispanic, predominantly Mexican-American, college students. It was hypothesized that positive expectancies would be positively related to alcohol consumption and alcohol-related problems and that negative expectancies would be negatively related to alcohol consumption and alcohol related problems. Little is known and understood about the role of positive and negative expectancies in Hispanic college students and even less is known about how expectancies relate to alcohol related problems in this population.

This study was a …

Project L.E.A.N.: An After-School Health And Exercise Project For Elementary School Children In El Paso, Texas, Hendrik De Heer

Open Access Theses & Dissertations

INTRODUCTION: After-school activities provide valuable opportunities for health promotion activities that do not interfere with the regular school day, especially in minority populations with higher rates of obesity and type 2 diabetes. The current study is an evaluation of an after-school health education and physical activity program conducted in nine elementary schools in 2008 in El Paso, Texas. METHODS: The intervention consisted of a 10-12 week (twice a week) after school program consisting of a pilot (with two experimental schools) and main intervention (six schools each including a control and experimental group). The main outcome variables were Body Mass Index, …

In-Vivo Delivery Of Dna Vaccines Using Metallo-Lipid Nanoparticles, Clarissa Sara Gomez

Open Access Theses & Dissertations

There has been a rapidly growing area of research in the design and synthesis of molecules that self-organize in water to form functional nanosystems and due to the high interest in the area metal ligand complexes were tested as drug delivery systems with a Leishmania vaccine. Herein, we present the design, synthesis and functional activity of Cu(II) and Zn(II) complexes that self-assemble in water to form spherical nanoscale structures that exhibit an affinity to bind DNA and deliver it into eukaryotic cells with a high percent efficiency in-vitro. In order to assess the effectiveness of these nanoparticles to deliver DNA …

Theory Of Planned Behavior Constructs As Mediators Of Behavior Change Associated With A Brief Alcohol Intervention, Denise Servo

Open Access Theses & Dissertations

This study examined the Theory of Planned Behavior constructs (attitudes, subjective norms, perceived behavioral control [PBC], and behavioral intentions) as mediators of changes in alcohol consumption and alcohol-related problems in a longitudinal sample of 206 college students. The Brief Alcohol Screening and Intervention for College Students (BASICS) is a program designed to curb risky alcohol consumption and its related consequences among college students. Eligible students completed a baseline assessment battery at assessment and again six months after participating in BASICS. The AUDIT (Alcohol Use Disorders Identification Test) assessed alcohol consumption and the RAPI (Rutgers Alcohol Problem Inventory) assessed alcohol-related problems. …

Evaluation Of A Nutrition Program Targeting Child Care Centers, Kendra Witt

Open Access Theses & Dissertations

Color Me Healthy (CMH) is an interactive nutrition program designed for preschool aged children in child care settings. The current study examined if CMH increases the consumption of fruit and vegetables. Child care centers were randomly assigned to one of two conditions; children (n=165) in ten centers received CMH and children (n=98) in seven centers acted as controls. Consumption of fruit and vegetable snacks was assessed at baseline, one week post-intervention and 3 months post-intervention. Hierarchical linear modeling determined that group assignment was the only significant predictor of fruit and vegetable consumption. Children who were exposed to the CMH program …