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Articles 301 - 330 of 417
Full-Text Articles in Public Health
The Effect Of Changes In Tort Laws On Cesarean Section Rates In The United States, Allison Jean Taylor
The Effect Of Changes In Tort Laws On Cesarean Section Rates In The United States, Allison Jean Taylor
All ETDs from UAB
"Defensive medicine", medical practice decisions based on fear of malpractice litigation and where risks may outweigh health and cost benefits, is a proposed contributor to increasing cesarean rates in the U.S. Some studies suggest that changes in laws governing medical malpractice actions may decrease the cesarean rate by relieving pressures driving defensive medicine. This study examined whether, in states that have adopted certain tort reform measures, the probability of having a cesarean delivery is lower following implementation of the reform measures. A database of state legislation and court decisions and National Center for Health Statistics natality data files (1991-2004) were …
Conceptualization Of Cervical Cancer And Screening Experiences Among Zambian Women Attending A Cervical Screening Program, Heather Leah White
Conceptualization Of Cervical Cancer And Screening Experiences Among Zambian Women Attending A Cervical Screening Program, Heather Leah White
All ETDs from UAB
Invasive cervical cancer (ICC) is the second most commonly diagnosed malignancy worldwide, and approximately 85% of the disease burden occurs in underdeveloped countries. In 2006, the Zambian government launched a cervical screening program within primary health clinics using visual inspection with acetic acid (VIA) coupled with immediate treatment via cryotherapy. The objective of this dissertation was to determine whether the VIA screening program is responsive to the needs and concerns of Zambian women in an effort to improve screening uptake, and for human immunodeficiency virus (HIV) positive women who are potentially subject to increased ICC screening and treatment, increase long-term …
Statistical Methods In The Analysis Of Copy Number Variation Data, Nathan Wineinger
Statistical Methods In The Analysis Of Copy Number Variation Data, Nathan Wineinger
All ETDs from UAB
Copy number variation is a significant form of genetic variation that has been shown to influence many traits. However, current methods used to estimate copy number variation are imprecise and prone to errors. This property is demonstrated in a study examining copy number variation in African Americans recruited into the Hypertensive Genetic Epidemiology Network study, and who were genotyped on the Affymetrix 6.0 array. The effect this has on downstream association analyses is explored, an alternative methods are proposed. Finally, a method is proposed that uses linkage disequilibrium between copy number variants and single nucleotide polymorphisms to improve the accuracy …
Fenofibrate And Insulin Resistance, Corrie E. Paeglow
Fenofibrate And Insulin Resistance, Corrie E. Paeglow
All ETDs from UAB
Both animal and human models suggest that fenofibrate, a medication widely prescribed to decrease triglycerides, also decreases insulin resistance. In the Genetics of Lipid Lowering Drugs and Diet Network (GOLDN) cohort, which included 780 individual who took 160 mg of micronized fenofibrate daily for three weeks, fenofibrate was found to decrease HOMA-IR by -0.24 units, (95% CI: -0.32, -0.14), insulin by -0.65 uU/mL (95% CI: -0.97, -0.34) and glucose by 2.46 mg/dL (95% CI: -2.51, -2.42). In a meta-analysis of 19 studies that included 1,297 individuals without diabetes and 196 individuals with diabetes treated with fenofibrate for three weeks or …
An Examination Of Statistical Methods For Longitudinal Mediation Modeling, John Paul Bentley
An Examination Of Statistical Methods For Longitudinal Mediation Modeling, John Paul Bentley
All ETDs from UAB
The use of mediation modeling is quite prevalent in a number of disciplines to answer questions about how or why one variable exerts its influence on another variable. Although mediation can be assessed in the context of several types of study designs, the use of cross-sectional data and a single-mediator model tend to be the most commonly reported features in empirical tests of mediation. There are several limitations associated with assessing mediation with cross-sectional data, perhaps the most significant is that mediated effect estimates are biased in the case of true longitudinal mediation. For this and several other reasons, there …
The Effect Of An Inclusive Trauma System On Homicide Risk In An Urban Population, Russell Griffin
The Effect Of An Inclusive Trauma System On Homicide Risk In An Urban Population, Russell Griffin
All ETDs from UAB
Homicide is a leading cause of mortality in the United States, with approximately 18,000 homicides occurring annually. Most prevention efforts for homicide are aimed at primary (e.g., culling aggressive behaviors among youth) or secondary (e.g., preventing repeat violence) efforts. To date, there has been limited research on tertiary prevention efforts of homicide (i.e., preventing homicide by preventing deaths from assault-related injuries). With the advent of trauma systems (TS), which allow for rapid emergency medical response for injured individuals, it is possible that these systems may be an ef-fective effort of tertiary prevention of homicides. Using data from the Jefferson County …
The Relationship Between Sunlight And Cerebrovascular Health, Shia T. Kent
The Relationship Between Sunlight And Cerebrovascular Health, Shia T. Kent
All ETDs from UAB
Sunlight radiation may be related to stroke risk through increased vitamin D production. The latter has been associated with a number of conditions including stroke, cognitive function and cardiovascular disease. We performed three sets of analyses to determine whether higher levels of sunlight radiation were associated with lower rates of stroke incidence, all-cause mortality, and cognitive decline. We explored these relationships using the REasons for Geographic And Racial Differences in Stroke (REGARDS) study, a national longitudinal cohort of 30,239 participants. We merged the participants' residential histories with a ground and satellite-derived NASA dataset to characterize 15-year average sunlight radiation and …
A Cluster Analysis Based On The Health Belief Model Of Alacare Patients At High Risk For Osteoporosis, Elizabeth M. Kitchin
A Cluster Analysis Based On The Health Belief Model Of Alacare Patients At High Risk For Osteoporosis, Elizabeth M. Kitchin
All ETDs from UAB
The prevalence of osteoporosis and subsequent fragility fractures will continue to rise as the American population ages. The high personal and medical costs of fragility fractures have been well documented. Taking calcium and vitamin D supplements are important strategies for lowering the risk of sustaining a fragility fracture and for improving the efficacy of prescription osteoporosis medications. The purpose of this study was to determine if patients in a home health setting in Alabama (Alacare) who are defined as high risk for a fragility fracture could be segmented via cluster analysis based on the constructs of the Osteoporosis Health Belief …
Individual, Socio-Cultural And Structural Factors Associated With Cervical Cancer Screening And Treatment In Tanzania, Renicha Tomeka Mccree-Hale
Individual, Socio-Cultural And Structural Factors Associated With Cervical Cancer Screening And Treatment In Tanzania, Renicha Tomeka Mccree-Hale
All ETDs from UAB
Most African countries including Tanzania have limited cervical cancer screening and treatment programs. Only about 5% of women have ever been screened for cervical cancer. A constellation of individual and structural factors contributes to the challenge of cervical cancer screening and treatment in countries that bear significant burdens of disease. Yet, little is known about country specific factors that may constrain or facilitate scale up of health services. This dissertation is an attempt to identify and understand the country specific individual and structural barriers along with facilitators to cervical cancer screening and treatment in Tanzania. Individual, institutional and structural level …
Occupational Stress In Veterinary Support Staff, Sandra Morales Foster
Occupational Stress In Veterinary Support Staff, Sandra Morales Foster
All ETDs from UAB
OCCUPATIONAL STRESS IN VETERINARY SUPPORT STAFF Sandra Morales Foster DOCTOR OF PUBLIC HEALTH ABSTRACT Limited information exists about veterinary support staff and the occupational stressors of this workforce. Concern for workers in occupations of high or prolonged stress such as caregivers in hospitals and emergency situations has been noted in many studies. Occupational stress can cause harmful physical and emotional outcomes when the homeostatic balance is upset. This study explored occupational stress, health status, and coping strategies of veterinary support staff. A mixed-method collected quantitative and qualitative data. Demographic information and three validated instruments were ad-ministered using a web-based survey; …
Experimental Determination Of Shielding Requirements For Pet Medical Facilities, Bradley Scott Brinkley
Experimental Determination Of Shielding Requirements For Pet Medical Facilities, Bradley Scott Brinkley
All ETDs from UAB
Purpose: Shielding considerations are important for designing a positron emission tomography/computed tomography (PET/CT) imaging facility, because of the high energy (511 keV) of electron-positron annihilation photons. Since radiation emitted from patients administered PET radiopharmaceuticals includes lower-energy scattered photons, a given thickness of lead attenuates more of the radiation than it would for a monoenergetic beam of 511 keV photons. A more accurate determination of the effective attenuation coefficient of lead for the spectra of photon energies emitted from PET/CT patients could reduce the shielding requirements necessary to adequately protect public health. In this work, the spectra of energies emitted from …
Adsorption Characteristics Of Activated Carbon Fibers (Acfs) For Toluene, Jo Anne Goot Balanay
Adsorption Characteristics Of Activated Carbon Fibers (Acfs) For Toluene, Jo Anne Goot Balanay
All ETDs from UAB
Granular activated carbon (GAC) is currently the standard adsorbent in respirators against several gases and vapors because of its efficiency, low cost and available technology. However, a drawback of GAC due to its granular form is its need for containment, adding weight and bulkiness to respirators. This makes respirators uncomfortable to wear, resulting to poor compliance in its use. Activated carbon fiber (ACF) is considered a viable alternative adsorbent material for developing thinner, light-weight and efficient respirators because of their larger surface area, lighter weight and fabric form. This study aims to determine the critical bed depth and adsorption capacity …
Investigation Of Numerical Approaches To Analyze Flapping Wings, Nitin Bhagat
Investigation Of Numerical Approaches To Analyze Flapping Wings, Nitin Bhagat
All ETDs from UAB
For centuries, the agility and maneuverability of flying insects have been an inspiration to fluid dynamists. A large number of research activities have been conducted within the biological, aerodynamics, and computational science communities to understand the complex flow fields around flapping insects and their capability for rapid maneuvers. However, the understanding of these natural phenomena is still in its infancy. Recent experimental flow visualizations have shown the complex vortical structures around flapping wings and vortex interactions. Even with the advent of faster and better computer processors and improved numerical algorithms, computational fluid dynamics (CFD) techniques to accurately predict flow features …
Hierarchical And Bayesian Approaches For Estimating Prevalence Based On Pool Screening, Thomas Birkner
Hierarchical And Bayesian Approaches For Estimating Prevalence Based On Pool Screening, Thomas Birkner
All ETDs from UAB
Pool screening is a method that combines individual items into pools. Each pool will either test positive (at least one of the items is positive) or negative (all items are negative). Pool screening is commonly applied to the study of tropical diseases where pools consist of vectors (e.g. black flies) that can transmit the disease. The goal is to estimate the proportion of infected vectors. In paper 1, we present a frequentist Bernoulli-Beta hierarchical model to relax the constant prevalence assumption underlying the traditional frequentist prevalence estimation approach. This assumption is called into question when sampling from a large geographic …
Three Topics In Eye Injury Research, Justin Blackburn
Three Topics In Eye Injury Research, Justin Blackburn
All ETDs from UAB
Eye injuries are a leading cause of monocular blindness, with approximately 2 million Americans sustaining an eye injury annually. Occupational eye injuries resulting in at least one missed day of work total nearly 28,000 each year. Eye injuries have many different etiologies, although most are "minor" injuries such as corneal abrasions and foreign bodies. Chemical-related eye injuries have not been described epidemiologically. The most widely advocated prevention method for eye injuries is protective eyewear, but evidence to support this is surprisingly absent. Furthermore, the use of eye protection among workers who have previously sustained an eye injury remains a question …
Radiological Population Monitoring: Views Of Public Health Professionals In The Southeastern United States, Gwendolyn N. Hudson
Radiological Population Monitoring: Views Of Public Health Professionals In The Southeastern United States, Gwendolyn N. Hudson
All ETDs from UAB
In the immediate aftermath of a radiological disaster, it is essential to rapidly screen the population to identify contaminated persons, those needing urgent medical treatment, and those requiring long-term follow-up. This process, known as "radiological population monitoring," is vital to reducing morbidity and mortality and effectively addressing people's health needs and concerns. Radiological population monitoring has become a significant new focus of attention and responsibility for government agencies in recent years, due in large part to growing concerns about the possibility of a terrorist attack involving radioactive materials. The primary responsibility for radiological population monitoring resides within state and local …
Bayesian Hierarchical Generalized Linear Models For Detecting (Rare) Haplotype-Haplotype And Haplotype-Environment Interactions In Genetic Association Analysis, Jun Li
All ETDs from UAB
This dissertation research focuses on genetic association analysis based on haplotypes in the context of both population-based and family-based studies. Haplotype-based association analysis is powerful in the discovery and characterization of the genetic basis of complex human diseases. However, statistical models that fit haplotype-haplotype and haplotype-environment interactions have not yet been fully developed. Furthermore, statistical methods for detecting the association between rare haplotypes and disease have not kept pace with their counterpart of common haplotypes. For both population-based and family-based association analyses, we herein propose two efficient and robust methods to separately tackle these problems based on Bayesian hierarchical generalized …
Factors Associated With Prescribing Antiviral Medications For Treatment Of Influenza Among Primary Care Physicians In The United States, Payal Patel
All ETDs from UAB
Influenza is a contagious respiratory illness that affects millions each year. The illness, if not contained, can be a paramount public health threat in the U.S. and the world. Primary care physicians play an essential role in administering antiviral medications as a treatment for influenza yet the factors that influence their prescribing of these medications remain unclear. The present study aims to identify factors associated with physicians' prescribing of antiviral medications in the ambulatory care setting. The data utilized for this study were obtained from the National Ambulatory Medical Care Survey for each influenza season between the years of 2005-2008. …
Robust Nonparametric Regression Approach For Competing Cause Censored Survival Mortality Data With Covariates, Milind Arvind Phadnis
Robust Nonparametric Regression Approach For Competing Cause Censored Survival Mortality Data With Covariates, Milind Arvind Phadnis
All ETDs from UAB
In the case of two or more competing risks when only the time to the event due to one risk is observable with times due to the other outcomes treated as censored observations, standard methods of survival analysis fall short of assessing the association of a set of predictors with the outcomes of interest. This problem is particularly severe when there is a differential association of a predictor with two competing risks (harmful for one risk and protective for the other risk) such as stroke and myocardial infarction and in situations where the predictor is associated with only one risk …
Survival Analysis With Censored Outcomes, Henry T. Robertson
Survival Analysis With Censored Outcomes, Henry T. Robertson
All ETDs from UAB
This dissertation is arranged in the three-paper format. The unifying theme of the dissertation is estimating longevity in terms of years of life lost (YLL). The papers are presented in order of increasing methodological focus. The first paper, No compelling evidence that sibutramine prolongs life in rodents despite providing a dose-dependent reduction in body weight, was published in the International Journal of Obesity in 2010. Although sibutramine reduced food intake and body weight, it had no association with longevity. The conclusions were based on data from a 2-year toxicology trial required by the FDA. Although this paper was largely applied …
Pick It Up, Put It Down: A Grounded Theory Study Of How Low Income African American Patients In The Deep South Start Smoking And Quit Smoking, Jessica Hillman Williams
Pick It Up, Put It Down: A Grounded Theory Study Of How Low Income African American Patients In The Deep South Start Smoking And Quit Smoking, Jessica Hillman Williams
All ETDs from UAB
The purpose of this qualitative was to use data extracted from the narrative stories of African American patients to generate a grounded theory to explain the process and act of initiating and of quitting smoking among low income African American patients in the Deep South. This is important since African Americans are more likely to suffer from smoking-related illnesses, which are the leading cause of death among African Americans. Data were analyzed from interviews conducted in 2005 as part of the Stories Project and supplementary interviews conducted in 2011. Convenience sampling strategies guided participant recruitment for primary interviews and theoretical …
Characterization And Modeling Of Styrene Emission From A Thermoset Composite Material, Shaun Anthony Crawford
Characterization And Modeling Of Styrene Emission From A Thermoset Composite Material, Shaun Anthony Crawford
All ETDs from UAB
Diffusive emissions of volatile compounds from building materials have been well documented as a source of indoor air pollution. While laboratory testing can quantify these emissions and predict volatile concentrations in indoor air, the ability to precisely model emission rates from any given building material would provide a useful tool to air quality professionals to anticipate, identify and mitigate potential sources of indoor air pollution. Composite materials, some made with vinyl ester resins, are replacing metal in transportation applications (bus bodies, airplane fuselages) but contain volatile styrene. Here, a mass transfer model for predicting volatile emissions from a dry building …
Social Connectedness And Its Association With Violence Commission In Adolescents Living In Low-Income Inner-City Neighborhoods, Thomas Norton Creger
Social Connectedness And Its Association With Violence Commission In Adolescents Living In Low-Income Inner-City Neighborhoods, Thomas Norton Creger
All ETDs from UAB
ABSTRACT For nearly two decades, violence has been viewed as a major public health issue. According to the Centers for Disease Control and Prevention, 4,141 young people between the ages of 10 and 19 were murdered in 2008, and over 480,238 young people were treated for violence-related injuries in U.S. emergency rooms that same year. That translates to an average of 11 young people murdered each day, and a daily average of 1,315 young people who sustained violence-related injuries so severe that they required treatment at a hospital. The purpose of this study was to test a multilevel model linking …
Chronic Alcohol Consumption Promotes Opening Of The Mitochondrial Permeability Transition Pore And Increases Mitochondrial Injury In Liver, Adrienne Lester King
Chronic Alcohol Consumption Promotes Opening Of The Mitochondrial Permeability Transition Pore And Increases Mitochondrial Injury In Liver, Adrienne Lester King
All ETDs from UAB
Alcoholic liver disease is a serious public health concern. In particular, the mitochondrion is a specific target of ethanol toxicity and much of the damage can be related to unregulated Ca2+ homeostasis and oxidative stress which are key players in the induction of the mitochondrial permeability transition pore (MPTP) within the organelle. The mechanism behind the induction of the MPTP remains elusive. Therefore, this body of work will provide insight on what effects chronic alcohol consumption has on mitochondrial dysfunction with an emphasis on the MPTP. Chapter 2: Assessment of mitochondrial dysfunction arising from treatment with hepatotoxicants provides a description …
The Effects Of Paternal Absence On The Sexual Behaviors Of African-American Adolescents Living In Impoverished Neighborhoods, Cheri Nicolette Langley
The Effects Of Paternal Absence On The Sexual Behaviors Of African-American Adolescents Living In Impoverished Neighborhoods, Cheri Nicolette Langley
All ETDs from UAB
According to the 2005 Youth Risk Behavior Survey (YRBS), 47% of the surveyed high school students reported ever having sexual intercourse, with 6% reporting having initiated their first sexual intercourse before the age of 13 (Eaton et al., 2006). Using the Mobile Youth Survey (1998-2008), the purpose of this study is four-fold: (a) to describe the MYS sample (1998-2008) in terms of its primary independent variable (the absence of a father figure) and its primary outcomes (sexual debut, sexual frequency, number of sex partners, condom use, pregnancy in the last year, and pregnancy intention); (b) to determine the impact of …
A Pilot Study Of A Computer-Tailored Program To Increase Calcium And Vitamin D Consumption In Young Women: Does Adding Heel Quantitative Ultrasound Feedback Change Outcomes?, Donald H. Lein
All ETDs from UAB
Osteoporosis and osteoporosis-related fractures are costly personal and national
The Role Of Socioeconomic Factors In Racial And Ethnic Disparities Among Child And Adult Tuberculosis Cases, Spatial And Non-Spatial Analysis: Alabama 1993-2007, Sharada Adolph
All ETDs from UAB
This study aimed to evaluate the role of individual and community/population level socioeconomic factors on racial/ethnic disparities among children and adults with TB, and used area-based socioeconomic measures (ABSMs) for the identification of high-risk geographic areas for populations-at-risk. Joinpoint, multivariable and Poisson regression, and spatial methods were used to determine the trends and risks of disease in a low TB incidence state. General disease trends declined significantly by factors of -0.044838 from 1993-1998, and -0.061821 from 2001-2007; but, were disparate and increased for the foreign-born, African Americans (AA) and Latinos, and in long-term care settings. The average annual percentage change …
Determinants Of Self-Efficacy To Seek Care For Tuberculosis And Complete Tuberculosis Treatment Among Hiv-Positive Patients Attending Government Hiv/Aids Clincis In Honduras, Mayra Silvana Arias
Determinants Of Self-Efficacy To Seek Care For Tuberculosis And Complete Tuberculosis Treatment Among Hiv-Positive Patients Attending Government Hiv/Aids Clincis In Honduras, Mayra Silvana Arias
All ETDs from UAB
control
Hypothesis Testing Based On Pool Screening With Unequal Pool Sizes, Hongjiang Gao
Hypothesis Testing Based On Pool Screening With Unequal Pool Sizes, Hongjiang Gao
All ETDs from UAB
Pool screening is a widely applied technique to estimate the prevalence of a rare event. This focus of this research is on developing statistical test of hypothesis procedures under the assumption that pool sizes are unequal but known. One of the proposed test procedures is , an exact test based on the number of positive pools (denoted by T). Another set of proposed test procedures is a modification of the likelihood ratio, Wald's and Score tests which are commonly-used likelihood-based tests. In paper 1, we derive the distribution of T which will be the basis of the exact test. Other …
Intimate Partner Violence Among Latinas In Central Alabama: Sociodemographic Characteristics, Perceptions Of Abuse, And Help-Seeking Behaviors, Angela Boy
All ETDs from UAB
This study utilized a cross-sectional design to survey 272 Latinas in the Birmingham metropolitan area and interview 29 Latinas who were known victims of IPV in the community. Prevalence, socio-demographic characteristics, perceptions of abuse, and help-seeking behaviors were examined, and the psychometric properties of the Woman Abuse Screening Tool (WAST) were assessed. Survey findings indicated current and lifetime IPV prevalence rates of 39.4% and 44.9%, respectively, among women aged 19-55. Victims were 1.9 times more likely to have been born in Central/South America than non-victims. Survey respondents had an average score of 32.5 (range 11-44) on the Perceptions of Abuse …