Digital Commons Network^™

Does Unemployment Decrease Cancer Mortality?, Benjamin Torres Galick

Economics Honors Projects

Recent research indicates that healthier lifestyles during recessions decrease the most common U.S. mortalities, but not cancer. However, they combine specific cancer mortalities with different progressions into one, possibly obscuring cancer’s link to unemployment. This paper estimates a fixed-effects regression model on unemployment and the nine most prevalent cancers between 1988 and 2002 using state-level panel data. Five cancers and total cancer are procyclical, and suggest that unemployment affects both incidence and gestation for some cancers. Consistent with the medical literature, this paper contradicts previous economic research and suggests that behavioral factors significantly impact cancer mortality.

Exploring The Sensitivity Of Horn's Parallel Analysis To The Distributional Form Of Random Data, Alexis Dinno

Community Health Faculty Publications and Presentations

Horn's parallel analysis (PA) is the method of consensus in the literature on empirical methods for deciding how many components/factors to retain. Different authors have proposed various implementations of PA. Horn's seminal 1965 article, a 1996 article by Thompson and Daniel, and a 2004 article by Hayton et al., all make assertions about the requisite distributional forms of the random data generated for use in PA. Readily available software is used to test whether the results of PA are sensitive to several distributional prescriptions in the literature regarding the rank, normality, mean, variance, and range of simulated data on a …

Women, Birth Control Pills, And Thrombophilia: An Analysis Of Risk Communication, Kerry Gomer

All Theses

The Surgeon General recently issued a call to action to reduce the incidents of blood clots, which can cause pulmonary embolism, deep vein thrombosis, and stroke. This research study was conducted to assess what risk information is available to women regarding thrombosis (blood clots) and thrombophilia (clotting disorders) in combination with birth control pills, what women know about this issue, and how to increase this awareness. A media analysis showed that very little information is available to women about thrombosis and thrombophilia with regard to birth control pills. It also demonstrated that the information that is available is often inadequate …

Cooking With A Chef: A Culinary Nutrition Intervention For College Aged Students, Andrew Warmin

All Theses

The primary objective of this study is to provide evidence that a culinary nutrition intervention is appropriate for, and of value to college students. A secondary objective is to provide evidence that the nutrition component of a culinary nutrition course can be delivered online through an interactive presentation. The study initially involved a review of literature highlighting the nutrition habits of college students, the strengths and weakness of existing cooking and nutrition classes, and other factors relating to the college student's health. Based on this literature review it was determined that a culinary nutrition course is an appropriate way to …

Correlates Of Soy Food Consumption In Adventist Health Study-2, Yen Ang

Loma Linda University Electronic Theses, Dissertations & Projects

Much has been discussed about the health benefits and risks of soy consumption but very little is known about who the consumers are. Most of what is known has been observed mainly in Asian populations who consume high levels of soy. Very little is known about soy food intake in the western population who typically has low consumption level. The Seventh-Day Adventist cohort in North America is the only population known in the West with soy food intake that is comparable to the Asian population living in the East.

Soy consumers in a population known for its healthier lifestyle and …

Advance Practice Nurses Readiness To Change Assessment Methods In Parents Of Obese Children, Carolyn Leach

UNLV Theses, Dissertations, Professional Papers, and Capstones

The worldwide epidemic of child and adolescent overweight and obesity continues to increase at disturbing rates. Unhealthy dietary practice is one of multiple causative behaviors leading to child and adolescent overweight and obesity. This behavior can contribute to short and long-term health consequences. Parents are modulators in the development of children's dietary behavior practices. It is recommended clinical practice that pediatric nurse practitioners (PNPs) assess readiness to change behavior in parents of overweight or obese children. The components of the Prochaska and DiClemente's Transtheoretical Model (TTM) in correlation with the counseling style of Rollnick, Miller and Butler's methods of Motivational …

An Evaluation Of Methicillin Resistant Staphylococcus Aureus Survival On Five Environmental Surfaces Under Two Different Humidities, With And Without The Addition Of Bovine Serum Albumin, Courtney Ann Coughenour

UNLV Theses, Dissertations, Professional Papers, and Capstones

The spread of antibiotic resistant bacteria is a major public health concern, as they result in greater healthcare costs and increased morbidity and mortality rates. Methicillin resistant Staphylococcus aureus (MRSA) is one organism of particular concern, with the number of infections increasing in epidemic proportion. Bacterial surface contamination with MRSA is significant, as it may serve as a reservoir for transmission and have negative health implications. The purpose of this study was to evaluate survival of MRSA on five environmental surface materials; glass, wood, vinyl, plastic, and cloth. The effect of relative humidity (RH) and bovine serum albumin (BSA) were …

Evaluation Of X-Ray Fluorescence (Xrf) Lead Detection Method For Candy, Ashley Marie Phipps

UNLV Theses, Dissertations, Professional Papers, and Capstones

The harmful effects of childhood exposure to environmental lead continue to be a major health concern. Due to the significance of this hazard, a Healthy People 2010 objective was set to reduce all young children's blood lead levels to less than 10 micrograms per deciliter. Identification and removal of lead-contaminated candies is an integral part of the primary prevention of lead poisoning in children.

This research examined the efficacy of a protocol to use a portable XRF to screen candies for lead contamination. Method Detection Limits (MDLs) of 5.45 ppm and 7.05 ppm were determined in the Bulk Sample and …

The Effect Of Concurrent Cell Phone Use And Walking On Gait Characteristics, Jennifer Marie Aldridge

UNLV Theses, Dissertations, Professional Papers, and Capstones

This study examined the effects that cell phone use has on gait and situation awareness. Subjects (n=18; 24.67±3.60 yrs) completed three five-minute treadmill walking conditions (self-selected speed): (1) CONTROL (walking only), (2) TALK (walking and talking), and (3) TEXT (walking and texting). The number of detected lights presented in the visual field was recorded, as were kinematic data of the feet. Using a one-way repeated measure ANOVA it was determined light detection (F _(2,17) =39.777, p<0.001) and TC_min (F_(2,17) =8.574, p=0.001) were different between conditions. Specifically, light detection decreased during TEXT (2.6±2.2 lights) versus TALK (5.8±0.05 lights, p<0.001) or CONTROL (5.9±0.05 lights, p<0.001); TC_min decreased …

Mercury Concentrations In Muscle Tissue From Sportfish In Lake Mead, Nevada, Joanna L. Kramer

UNLV Theses, Dissertations, Professional Papers, and Capstones

Lake Mead is the largest reservoir by volume in the United States and provides fishing opportunities for numerous anglers. Considerable attention has been given to the bioaccumulation of methylmercury in fish tissues, however, no formal study utilizing approved USEPA methodology has been conducted to quantify the amount of mercury present in fish tissue from Lake Mead. The purpose of this study is to determine the concentrations of mercury present in the most commonly consumed fish from Lake Mead and to identify if any of the 4 major basins contain fish with elevated concentrations of mercury. Largemouth bass (n=49), striped bass …

Perception Of Power Dynamics And Risky Sexual Behavior In Indian Men, Amber Haley

Theses and Dissertations

Background: Women account for about a third of all new cases of HIV in India. Based on research examining trends of HIV infection in women, male perception and behaviors have emerged as strong potential risk factors. However, there has been limited research examining the relationship between male’s attitudes toward women and their sexual risk-taking behaviors. This study examined the degree to which men’s beliefs about power dynamics in heterosexual relationships are related to risky sexual behaviors in Indian men. Methods: Data on Indian men from the 2005-2006 National Family Health Survey (NFHS-3) was analyzed (N= 44,727). The outcome variable, risky …

The Pakistan Risk Of Myocardial Infarction Study: A Resource For The Study Of Genetic, Lifestyle And Other Determinants Of Myocardial Infarction In South Asia, Danish Saleheen, Moazzam Zaidi, Asif Rasheed, Usman Ahmad, Abdul Hakeem, Muhammed Murtaza, Waleed Kayani, Rashid Jooma, Nadir Khan, Nabi Shah, Asad Ali Shah, Maria Samuel, Farina Hanif, Madiha Yameen, Sobia Naz, Aisha Sultana, Aisha Nazir, Shehzad Raza, Muhammad Shazad, Sana Nasim, Muhammad Ahsan Javed, Syed Saadat Ali, Mehmood Jafree, Muhammad Imran Nisar, Altaf Hussain, Ayeesha Kamran Kamal, Philippe M. Frossard

Department of Biological & Biomedical Sciences

The burden of coronary heart disease (CHD) is increasing at a greater rate in South Asia than in any other region globally, but there is little direct evidence about its determinants. The Pakistan Risk of Myocardial Infarction Study (PROMIS) is an epidemiological resource to enable reliable study of genetic, lifestyle and other determinants of CHD in South Asia. By March 2009, PROMIS had recruited over 5,000 cases of first-ever confirmed acute myocardial infarction (MI) and over 5,000 matched controls aged 30-80 years. For each participant, information has been recorded on demographic factors, lifestyle, medical and family history, anthropometry, and a …

Bacillus Anthracis In China And Its Relationship To Worldwide Lineages, Tatum S. Simonson, Richard T. Okinaka, Bingxiang Wang, W. Ryan Easterday, Lynn Huynh, Jana M. U'Ren, Meghan Dukerich, Shaylan R. Zanecki, Leo J. Kenefic, Jodi Beaudry, James M. Schupp, Talima Pearson, David M. Wagner, Alex Hoffmaster, Jacques Ravel, Paul Keim

United States Public Health Resources

Background: The global pattern of distribution of 1033 B. anthracis isolates has previously been defined by a set of 12 conserved canonical single nucleotide polymorphisms (canSNP). These studies reinforced the presence of three major lineages and 12 sub-lineages and sub-groups of this anthrax-causing pathogen. Isolates that form the A lineage (unlike the B and C lineages) have become widely dispersed throughout the world and form the basis for the geographical disposition of "modern" anthrax. An archival collection of 191 different B. anthracis isolates from China provides a glimpse into the possible role of Chinese trade and commerce in the spread …

Eligibility, Recruitment, And Retention Of African Americans With Severe Mental Illness In Community Research, Michelle Hampton, Mary White, Linda Chafetz

Faculty Publications

Data that addresses severely mentally ill (SMI) African Americans (AAs) likelihood to participate in clinical research is limited. This study’s purpose was to determine if differences exist between races regarding eligibility, recruitment, and retention in a community-based clinical trial. The sample included 293 participants. Data sources included clinical records and interviews. Logistic regression was used for analysis. AAs were as likely to participate and to complete followup interviews as Whites. In contrast to studies about non-mentally ill AAs, AAs with SMI appeared to be as willing to consent to and to remain in clinical research studies as Whites.

The Effect Of Obesity On State Health Care Expenditures: An Empirical Analysis, Kristen Collins

Honors Projects in Economics

The purpose of this study is to examine the effects of obesity rates on per capita state health care expenditures. A two-stage least square regression model is used. In the first stage of the estimation, factors influencing obesity rates are determined. The determinants of obesity rates are outlined throughout the research process. In the second stage, the impact of obesity rates on per capita health expenditures across states is evaluated. The empirical results indicate that obesity rates do indeed have a direct effect on state health care expenditures. After reviewing the project’s results, various solutions are proposed as possible methods …

Knowledge Of Emergency Contraception Among Women Of Childbearing Age At A Teaching Hospital Of Karachi, Farhana Irfan, Syed Irfan Karim, Saman Hashmi, Sajid Ali, Syed Arif Ali

Department of Family Medicine

OBJECTIVES: To assess knowledge and attitudes about Emergency Contraception among women of childbearing age in Karachi, Pakistan.

METHODS: A questionnaire based survey was conducted on 400 married women, attending the family practice clinics at a teaching hospital in Karachi, Pakistan from July to December 2006. Questionnaire was administered to women at the family practice clinic-seeking level of knowledge of emergency contraception (EC) and attitudes towards its use, Ethical requirements of informed consent and confidentiality were ensured Data was entered into Epi data and analyzed in SPSS.RESULTS: Eighty-eight percent of women were not aware of EC. 83% were housewives. Only a …

The Dynamics Of Income And Neighborhood Context For Population Health: Do Long Term Measures Of Socioeconomic Status Explain More Of The Black/White Health Disparity Than Single-Point-In-Time Measures?, D. Phuong Do

Faculty Publications

Socioeconomic status, though a robust and strong predictor of health, has generally been unable to fully explain the health gap between blacks and whites in the Untied States. However, at both the individual and neighborhood levels, socioeconomic status is often treated as a static factor with only single-point-in-time measurements. These cross-sectional measures fail to account for possible heterogeneous histories within groups who may share similar characteristics at a given point in time. As such, ignoring the dynamic nature of socioeconomic status may lead to the underestimation of its importance in explaining health and racial health disparities.

In this study, I …

Interdisciplinary, Translational, And Community-Based Participatory Research: Finding A Common Language To Improve Cancer Research, James R. Hébert, Heather M. Brandt, Cheryl A. Armstead, Swann Arp Adams, Susan E. Steck

Faculty Publications

Preventing cancer, downstaging disease at diagnosis, and reducing mortality require that relevant research findings be translated across scientific disciplines and into clinical and public health practice. Interdisciplinary research focuses on using the languages of different scientific disciplines to share techniques and philosophical perspectives to enhance discovery and development of innovations; (i.e., from the “left end” of the research continuum). Community-based participatory research (CBPR), whose relevance often is relegated to the “right end” (i.e., delivery and dissemination) of the research continuum, represents an important means for understanding how many cancers are caused as well as for ensuring that basic science research …

“The Womb People” : Detection, Treatment, And Prevention Of Cervical Cancer With The Khayelitsha Cervical Cancer Screening Project In Khayelitsha, South Africa, Kirsten Lynch

Independent Study Project (ISP) Collection

The current policy concerning cervical cancer screenings is not effectively addressing the specific needs of the female South African population. The program, as outlined by the South African Department of Health, is not sufficiently accessing women due to problems in availability, access, organization, and education. As women are living longer with HIV/AIDS, due to antiretroviral (ARV) treatment, they are becoming more susceptible to opportunistic infections that can lead to cervical cancer, such as Human strains of the virus can be prevented with administration of an HPV vaccination and advancement of precancerous lesions can be detected and treated with current technology. …

The Effect Of Semantic Set Size On Word Learning By Preschool Children, Holly L. Storkel, Suzanne M. Adlof

Faculty Publications

Purpose - The purpose was to determine whether semantic set size, a measure of the number of semantic neighbors, influenced word learning, and whether the influence of semantic set size was broad, showing effects on multiple measures both during and after learning.

Method - Thirty-six preschool children were exposed to 10 nonobjects, varying in semantic set size, paired with 10 nonwords, controlling phonotactic probability and neighborhood density. Nonobject-nonword pairs were presented in a game format. Learning was measured in naming and referent identification tasks administered before, during, and 1 week after training.

Results - Results showed no differences in naming …

Adult And Child Semantic Neighbors Of The Kroll And Potter (1984) Nonobjects, Holly L. Storkel, Suzanne M. Adlof

Faculty Publications

Purpose - The purpose was to determine the number of semantic neighbors, namely semantic set size, for 88 nonobjects (J. F. Kroll & M. C. Potter, 1984) and determine how semantic set size related to other measures and age.

Method - Data were collected from 82 adults and 92 preschool children in a discrete association task. The nonobjects were presented via computer, and participants reported the first word that came to mind that was meaningfully related to the nonobject. Words reported by two or more participants were considered semantic neighbors. The strength of each neighbor was computed as the …

Nonparametric Incidence Estimation From Prevalent Cohort Survival Data, Marco Carone, Masoud Asgharian, Mei-Cheng Wang

COBRA Preprint Series

Incidence is an important epidemiologic concept particularly useful in assessing an intervention, quantifying disease risk, and planning health resources. Incident cohort studies constitute the gold-standard in estimating disease incidence. However, due to material constraints, data are often collected from prevalent cohort studies whereby diseased individuals are recruited through a cross-sectional survey and followed forward in time. We discuss the identifiability of measures of incidence in the context of prevalent cohort survival studies and derive nonparametric maximum likelihood estimators and their asymptotic properties. The proposed methodology accounts for calendar-time and age-at-onset variation in disease incidence while also addressing common complications arising …

What Do Young Adults Know About The Hiv/Aids Epidemic? Findings From A Population Based Study In Karachi, Pakistan., Syed Farid-Ul-Hasnain, Eva Johansson, Gunilla Krantz

Community Health Sciences

Background: HIVAIDS is spreading globally, hitting the younger generations. In Pakistan, the prevalence of HIV in high-risk subpopulations is five per cent or higher. This poses a serious threat of a generalised epidemic especially among the younger population. In the wake of HIVAIDS epidemic this is worrying as a well informed younger generation is crucial in restricting the spread of this epidemic. This study investigated Pakistani young adults' (male and female) knowledge and awareness of the HIV/AIDS disease. Methods: A population-based, cross-sectional study of 1,650 male and female adults aged 17-21 years living in Karachi was conducted using a structured …

The Importance Of Scale For Spatial-Confounding Bias And Precision Of Spatial Regression Estimators, Christopher J. Paciorek

Harvard University Biostatistics Working Paper Series

Increasingly, regression models are used when residuals are spatially correlated. Prominent examples include studies in environmental epidemiology to understand the chronic health effects of pollutants. I consider the effects of residual spatial structure on the bias and precision of regression coefficients, developing a simple framework in which to understand the key issues and derive informative analytic results. When the spatial residual is induced by an unmeasured confounder, regression models with spatial random effects and closely-related models such as kriging and penalized splines are biased, even when the residual variance components are known. Analytic and simulation results show how the bias …

Smoking Enhances Risk For New External Genital Warts In Men, Dorothy J. Wiley, David Elashoff, Emmanuel V. Masongsong, Diane M. Harper

Dartmouth Scholarship

Repeat episodes of HPV-related external genital warts reflect recurring or new infections. No study before has been sufficiently powered to delineate how tobacco use, prior history of EGWs and HIV infection affect the risk for new EGWs. Behavioral, laboratory and examination data for 2,835 Multicenter AIDS Cohort Study participants examined at 21,519 semi-annual visits were evaluated. Fourteen percent (391/2835) of men reported or were diagnosed with EGWs at 3% (675/21,519) of study visits. Multivariate analyses showed smoking, prior episodes of EGWs, HIV infection and CD4+ T-lymphocyte count among the infected, each differentially influenced the risk for new EGWs.

Field Evaluation Of A Novel Exposure Assessment Strategy Using Respirable Coal Dust Exposures During Heat Plant Coal Receiving Operations, Timothy W. Batten

Theses and Dissertations

An exposure assessment strategy (EAS) determines the number of samples required to characterize an occupational health exposure’s acceptability. A novel EAS (AFIT-EAS) was developed with the objective of maximizing the sensitivity for detecting unacceptable exposures, while minimizing the total number of samples needed. The purpose of this field evaluation was to use data from a comprehensive sampling campaign (SC) to compare the AFIT-EAS with two commonly used EASs: the Occupational Safety and Health Administration’s (OSHA-EAS) and the American Industrial Hygiene Association’s (AIHA-EAS). 10 randomly sampled replicates were selected from the SC. The number of samples selected per replicate was in …

Analysis Of Randomized Comparative Clinical Trial Data For Personalized Treatment Selections, Tianxi Cai, Lu Tian, Peggy H. Wong, L. J. Wei

Harvard University Biostatistics Working Paper Series

No abstract provided.

Controlling Hazardous Noise And Dust Within The Industrial Workforce Using A Simple Barrier, Daniel D. Sweeney

Theses and Dissertations

The United States Air Force (USAF) has experienced a dramatic increase in hearing loss claims since 2001. Additionally, many operations within the USAF expose personnel to hazardous dust levels. Likewise, the US mining industry has difficulties controlling hazardous noise and dust exposures in underground mining. Specifically, studies have shown that coal mine longwall shearer operators are routinely exposed to noise levels at 151 percent of the allowable dose and approximately 20 percent exceed regulatory dust levels. An above ground full scale model of the underground shearing operation was developed to test the feasibility of mounting a permanent partial barrier on …

Fate Of Libby Amphibole Fibers When Burning Contaminated Firewood, Tony Ward, Julie Faroni Hart, Terry M. Spear, Brienne J. Meyer, James S. Webber

Public and Community Health Sciences Faculty Publications

In Libby, Montana, over 70 years of mining amphibole-contaminated vermiculite has led to amphibole contamination in areas surrounding the abandoned mine and in other areas throughout the town. In addition to contaminated soils, tree bark has also been found to be contaminated with amphibole fibers throughout the Libby area. As residential woodstoves are the main source of home heating in Libby, the purpose of this study was to determine if amphibole fibers become liberated into the ambient air when amphibole-contaminated firewood is combusted.

Amphibole-contaminated firewood was combusted in new, EPA-certified stoves during three trials. The results of these trials showed …

Closing The Food Gap In Adams County: A Proposal For Comprehensive Solutions Through Community Action, Vickie Corbett, Rayna Cooper, Kim Davidson, Kathy Gaskin, Kathy Glahn, Aimee S. George, Audrey Hess, Gretchen Natter, Christine Nemetz, Megan Shreve, Sara W. Tower

Center for Public Service Research

Today, in Adams County, we have two food systems. The 20% who live in poverty survive on food stamps, the food pantry, church donations, and trips to discount food vendors. Those with more financial stability could choose from an abundance of healthy, sustainably produced, local and international foods. We have come to accept these two food systems as the norm without critically analyzing how it is affecting individuals and the health of our communities.

In addition to reducing the disparity and closing the food gap, this initiative is focused on building our local economy and educating our community about nutrition …