Epidemiology Commons^™

Meat Intake And Prostate Cancer In African American Men, Uchenna Njoku

Walden Dissertations and Doctoral Studies

African American men have more prostate cancer and are more than twice as likely to die of the disease as Caucasian men, and the reasons for this racial disparity have not been clarified. Identifying lifestyle and dietary risk factors of prostate cancer is an important public health issue. Studies on the association between meat intake and prostate cancer risk have produced inconsistent results. The purpose of this cross-sectional quantitative study was to determine whether there is an association between total meat intake and total prostate cancer risk among African American men when controlling for age, income, educational level, physical activity, …

Impact Of Demographic Characteristics And Therapy On Tuberculosis Incident Cases, Iliedor Garcon

Walden Dissertations and Doctoral Studies

For more than two decades, tuberculosis (TB) has ranked second among the top killers of infectious diseases, with an estimated 10.4 million incident cases in 2018. Demographic characteristics and drug susceptibility influence TB incidence worldwide. Using a retrospective cohort design, the purpose of this quantitative study was to investigate whether race/ethnicity, age, sex (gender), therapy completion within one year (COT), and testing for isoniazid and rifampin susceptibility (TIRS) were predictors of 672 cases of TB in New York-Newark-Jersey City from 1993 to 2017. Guided by the epidemiological triad theory, this research was conducted using a secondary TB dataset from the …

Sexual Orientation, Body Mass Index, And Methamphetamine Use Among Chicago Youth, Nileshkumar Panchal

Walden Dissertations and Doctoral Studies

Drug use and obesity are two of the most challenging health-related issues that young people face. Obesity, substance abuse, and drug addiction lead to brain dysfunction, which can decrease the quality of life and academic performance as well as increase the vulnerability of developing chronic diseases. To date, there has been little research to determine whether sexual orientation influences the relationship between body mass index (BMI) and methamphetamine use. Focusing on youth, the relationship between BMI, methamphetamine use, and sexual orientation were examined in this study through secondary data analysis of the Youth Risk Behavioral Surveillance System in Chicago. Guided …

Association Between Metabolic Syndrome And Second Primary Cancer Among Colorectal Cancer Patients, Olukayode Ayodeji Agbeyomi

Walden Dissertations and Doctoral Studies

Colorectal cancer (CRC) is the third most common diagnosed cancer in both women and men in the United States. The gradual increase of incidence of second primary cancer (SPC) among CRC individuals has been a concern in recent times. Many CRC survivals have been forced back to be hospitalized for life-threatening cancers that are nonmetastatic cancers of CRC. Literature has suggested that there may be a relationship between metabolic syndrome (MetS) and CRC cases. The importance of early surveillance, detection, and treatment of SPC in CRC patients is significant to achieve better survival rates. The aim of this retrospective quantitative …

Predictors Of Colorectal Cancer Screening Among Maryland Adults, Aged 50–75 Years, Pamela Manwi Asangong

Walden Dissertations and Doctoral Studies

Screening plays an essential role in reducing colorectal cancer (CRC) incidence and mortality rates, yet CRC screening use remains low in Maryland and lower in some age and racial/ethnic groups with limited resources to participate in CRC screening programs. The purpose of this quantitative, cross-sectional study is to investigate whether age group, sex, race/ethnicity, education level, income level, health insurance coverage, and access to health care professional can predict an individual, 50–75 years of age, in Maryland to take action to fully meet the United States Preventive Services Task Force CRC screening test recommendation within the recommended time interval. The …

Association Between Childhood Secondhand Smoke Exposure And Inflammatory Bowel Disease Development, Stephanie Eve Walsh

Walden Dissertations and Doctoral Studies

Inflammatory bowel disease (IBD) is a group of diseases that affect the gastrointestinal tract. Environmental factors, such as smoking, have been shown to play a role in the development of IBD; however, minimal research regarding secondhand smoke (SHS) exposure and the development of IBD has been conducted. The purpose of this study was to examine whether there was a relationship between childhood SHS exposure and the development of IBD. Bronfenbrenner’s ecological systems theory was used in this study as a basis that the environment can aid in the development of disease. The research questions addressed the potential association between childhood …

Motivators And Barriers Affecting Physical Activity Participation In Online Graduate Students, Gloria Christine Bales

Walden Dissertations and Doctoral Studies

Physical inactivity is a major contributor to chronic diseases, especially coronary heart disease. The American College Health Association’s National College Health Assessment II showed that only 47.4% of college students are meeting suggested physical activity requirements. As the nontraditional student population increases, research is needed to identify motivators and barriers specifically for online graduate students. The purpose of this case study was to examine the relationships of barriers and motivators for physical activity in online graduate students at Walden University. The study addressed research questions on what physical activity barriers existed in this study sample, (b) what intrinsic motivators and …

Medical Skepticism And Diabetes Management In African Americans, Pamela Bouyer

Walden Dissertations and Doctoral Studies

Type 2 diabetes (T2DM) in African Americans is a manageable disease, and self-management interventions reduce complications and hospital stays. However, in the African American population, traditional T2DM self-management interventions do not produce long-term effects on lifestyle and behavior changes. Researchers have analyzed the barriers and interventions associated with the disease, but the problem still exists. Medical skepticism may influence T2DM management and health outcomes in African Americans. However, there is scarce literature addressing the relationship between medical skepticism and health outcomes (eye and kidney problems). The purpose of the study is to assess the relationship between medical skepticism and outcomes …

Association Between Certificate-Of-Need Laws And The Health Outcomes Of Home Health Patients, Peter A. Atemnkeng

Walden Dissertations and Doctoral Studies

The Certificate of Need (CON) law on home health limits start-ups and expansions by providers. Seventeen states and the District of Columbia maintained CON restrictions in 2015. The regulation was intended to control health care cost and expenditure, and to promote quality public health outcomes, as postulated in the public interest theory. The purpose of the study was to assess the association between the CON laws by the states and the health outcomes of the Medicare patients that used home health services in 2015. The provider ratings data from Home Health Compare were analyzed using multiple linear regression models and …

Demographic, Lifestyle, And Psychosocial Predictors Of Obesity Among Nigerian Igbo Immigrants, Ahamefula Arthur Duru

Walden Dissertations and Doctoral Studies

Obesity is known as a risk factor for chronic diseases, and a contributor to health disparities among minorities and vulnerable persons. There is a paucity of data on Nigeria Igbos on obesity risks in the United States; therefore, studying obesity in this population may help policymakers tailor interventions that could reduce the prevalence of obesity. The purpose of the study was to examine the predictors of obesity among Nigerian Igbo immigrants in the United States. This study sought to examine lifestyle, psychosocial, and demographic factors as unique predictors of obesity in Nigeria Igbo immigrants. The social-ecological model and acculturation theory …

Mortality Disparities Among Puerto Rican Infants In 2015, Maria Del Carmen Medina

Walden Dissertations and Doctoral Studies

There is a well-established disparity between infant mortality rates among women residing in rural areas in Puerto Rico in comparison with woman residing in urban areas of Puerto Rico. There is a significant amount of research that connects infant mortality to low birth weight, congenital malformations, and premature births. The purpose of this study was to determine infant mortality and its relationship with the geographical location of Puerto Rican mothers. The study also examined whether there is a relationship between infant mortality and the area of residence (rural/urban) of the mother, marital status, race, and education level of the mother. …

Association Of Landfall Atlantic Tropical Storms And Human Cases Of Locally Acquired West Nile Virus Infection In Florida, Jackson G. Mosley

Walden Dissertations and Doctoral Studies

West Nile virus (WNv) is the most widely distributed flavivirus and considered a vector-borne pathogen of global significance. During the study period from 2002 to 2018, WNv had the highest incidence of locally acquired human cases when compared to any other mosquito borne illness in Florida with 373 cases documented during the study period. The purpose of the study is to determine if there is an association between Florida landfall tropical storms (LTS) and the incidence of locally acquired human WNv cases from 2002 through 2018. The study used a retrospective ecological study design guided by the epidemiological triad model …

Population-Level Determinants Of Cholera Incidence In African Countries, Ngoy Nsenga

Walden Dissertations and Doctoral Studies

Cholera remains endemic in Africa, with limited access to safe drinking water and inadequate sanitation as 2 of the main drivers of its dissemination. Few studies have examined the impact of health system capacity, even though it plays an important role in prevention, early detection, and response to a cholera outbreak. Grounded in the ecosocial theory of infectious disease dissemination, this quantitative ecological study explored the effect of social vulnerability (as measured by access to safe drinking water and sanitation, rate of open defecation, poverty, income inequality, gender inequality, and adult literacy) and health system (as measured by health financing …

Sociodemographic Factors Associated With Abortion Rates Among Black Women In The United States, Lincoln Don Washington

Walden Dissertations and Doctoral Studies

Abortion has been a public health issue since the procedure became legal 47 years ago and, clinicians have performed 60,069,971 abortions from 1973 to 2017 in the United States. In 2014, a significant decline in abortion rates has been recorded in almost every state, as well as across different subpopulations when segregated by age, race/ethnicity, education, income, or geographic locations. However, abortion rates were still significantly higher among Black women relative to the U.S. average, prompting the need to examine the causes of this disparity. The main purpose of this quantitative study was to investigate and determine the sociodemographic causing …

Mothers' Knowledge, Clinic Staff, Community Support, And Breastfeeding Practices, Ubong Usua

Walden Dissertations and Doctoral Studies

Among low-income mothers enrolled in the Women Infant and Child (WIC) program and Medicaid, the rate of initiating breastfeeding immediately after delivery is low (57%) compared to high-income mothers (74%). Among the many factors contributing to this are low-income mothers' poor knowledge of the benefits of breast-feeding and lack of support and encouragement from clinical staff, family, and community. However, few studies have singled out the role of community and family support in improving maternal knowledge and breastfeeding practices. Using the Theory of Planned Behavior framework, this quantitative study used WIC data from the Texas Department of Health and Human …

Socioeconomic Status, Benzathine Penicillin Prophylaxis, And Clinical Outcomes In Patients With Rheumatic Heart Disease, Christopher Sabo Yilgwan

Walden Dissertations and Doctoral Studies

Rheumatic heart disease (RHD) is the major cause of acquired heart disease and death for children and young adults in developing countries. Poverty and social disadvantage are thought to influence the clinical outcomes in RHD patients. Guided by the health lifestyle theory, this study assessed the relationship between socioeconomic status and clinical outcomes (heart failure events and mortality) in patients with RHD. It also examined how adherence to penicillin prophylaxis mediates the effect of socioeconomic status (SES) on clinical outcomes. Using the Nigerian database of the REMEDY study, this study was conducted with 243 participants using Poisson regression and logistic …

Area-Level Factors Linked To Obesity In African American And Caucasian Women In Michigan, Marjorie Arrey

Walden Dissertations and Doctoral Studies

Obesity is a major public health crisis, affecting every segment of the U.S. population. African American women have higher prevalence of obesity than all other subpopulations and are disproportionately burdened by the disease and its comorbidities. Despite this disparity, African American women are often underrepresented in obesity research. This research examined obesity-related risk factors specific to African American women compared to those for Caucasian women. The design was based on the socioecological model and social cognitive theory, both emphasizing the impact of social factors on health outcomes. The data set included only adult Michigan women from the NHANES study. Multiple …

Sexual Education, Sexual Initiation, And Contraceptive Use Among African American Young Women, Kineka J. Hull

Walden Dissertations and Doctoral Studies

Unintended pregnancy is associated with adverse social, economic, and health outcomes making it a public health concern. African American (AA) women aged 18–24 are at higher risk of unintended pregnancy due to earlier sexual initiation and non-use, inconsistent, or improper use of contraceptive methods (CM). The purpose of this study was to investigate the extent to which receipt of formal sexual health education (FSHE) impacts age of sexual initiation and contraceptive use and selection of more effective CMs (ECMs) among AA women aged 18–24 (N = 242) who have sex with men. Driven by the reasoned action approach, 2015–2017 National …

Racial Disparities In Periconceptual Folic Acid Levels, Kelvin Gibson

Walden Dissertations and Doctoral Studies

Periconceptional folate level deficiencies are associated with birth defects of the brain and spinal cord, posing a significant public health problem. In 2009, Black and Hispanic women exhibited lower periconceptual folate levels and higher rates of folate-related birth defects compared with non-Hispanic White women, prior to enactment of the Affordable Care Act (ACA) of 2010. It is not known if improved access to prenatal care under the ACA narrowed the gap in mean periconceptual folate levels between non-Hispanic White, Black, and Hispanic women between 2009 and 2017. The purpose of this causal-comparative cross-sectional quantitative study was to determine whether there …

Examining The Mortality Risk Of A Population With Mental Illness, Glorimar Ortiz

Walden Dissertations and Doctoral Studies

Individuals with mental illness experience increased mortality and premature death. In a sample composed of 88% decedents with mental illness who were Black, the findings from three research studies provided insight about excess and premature mortality, odds of dying by cause of death, and risk factors associated with premature mortality. The purpose of this quantitative study was to examine the mortality of a population group with mental illness that was served in a public mental health system (PMHS). The ecoepidemiological life course framework for health, disease, and mortality was used to link mechanisms that may influence health and longevity in …

The Relationship Between Mental Illness And Mass Shooting, Priscilla Ngozi Chukwueke

Walden Dissertations and Doctoral Studies

AbstractWhenever a mass shooting occurs, it impacts the immediate families of the perpetrator, victims, and the whole nation: emotionally and financially. The research on the association between mental illness (MI) and mass shooting fatalities is limited. The purpose of this quantitative, cross-sectional study was to explore the association between MI and mass shooting using the archival data of the Stanford University database of mass shootings in America from 2000 to 2016. The theoretical framework was based on Bronfenbrenner’s social-ecological theory and the cognitive-behavioral theory to explain socio-environmental factors that impact human growth and development. The results showed that the proportion …

Understanding Characteristics Of Chronic Obstructive Pulmonary Disease Readmissions In An Acute Care Hospital, Jordan Danyale Brautigam

Walden Dissertations and Doctoral Studies

Patients suffering from chronic obstructive pulmonary disease (COPD) not only face difficulties managing their disease but are also faced with a higher risk of being readmitted to a hospital after an initial visit for acute exacerbation of their condition. Despite hospitals’ many attempts to offset this burden, readmission reduction programs are not effective. The purpose of this quantitative study was to further research an organization’s specific population surrounding patient comorbidities, reasons for readmissions, and demographic characteristics that may lend insight into reasons for readmissions. The research design was a retrospective analysis of a health system’s electronic medical record with a …

Retention, Viral Suppression, And Care Models In Hiv Positive Children And Adolescents In Cameroon, Eveline Mboh Khan

Walden Dissertations and Doctoral Studies

Human Immunodeficiency Virus (HIV) remains a significant public health problem in Sub-Saharan Africa with poor treatment outcomes in children and adolescents (C&As). There is a lack of information on the effects of various HIV care models (Child and Adolescent Friendly Clinic model and Support Group model) on retention in care and Viral Suppression (VS) in Cameroon. This study was carried out to identify the care model with the best outcomes for C&As, inform national scale-up strategies, resource prioritization, and contribute to the existing literature. A quantitative retrospective cohort review approach guided by the social cognitive theory was used to analyze …

Lifestyle Factors And Social Determinants As Predictors Of Weight/Body Mass Index, Uthman Alhaji Baba

Walden Dissertations and Doctoral Studies

Obesity is a major public health concern that includes the risk of developing cardiovascular disease and premature death in adults. Previous studies have established the relationship between gender, educational level, household income and respondents’ weight but additional research is needed to factor the nature of education in relation to gender differences, diet, and other important behavioral mediators such as social determinants. The purpose of this quantitative cross-sectional study is to determine the extent to which frequency of physical activity, household income, social determinants of health (money for balanced meals, finances at the end of month, and poor mental health), respondent …

Mandibular Attachment Device Effects On African American Veterans With Heart Failure, Tracey T. F. Carter

Walden Dissertations and Doctoral Studies

Heart failure is a growing epidemic that affects people nationwide and is disproportionate to African Americans. The purpose of this quantitative repeated measures study was to determine whether mandibular attachment device (MAD) therapy impacts symptoms of heart failure in African American male veterans diagnosed with obstructive sleep apnea (OSA). The oxidative stress theory was applied in this study to assess whether MAD therapy received from Veterans Affairs (VA) dental clinics impacted heart failure symptoms, after controlling for patient body mass index (BMI) levels and smoking status. Research questions examined whether MAD had a significant effect on symptoms of heart failure …

Impact Of Education On Hiv Testing Among African American Women In The United States, Florence Matimbah Mbangowah

Walden Dissertations and Doctoral Studies

Improved and increased human immunodeficiency virus (HIV) testing among African American women in the United States could facilitate early detection of the virus. The purpose of this cross-sectional quantitative study was to determine if there was a significant association between HIV testing participation and education level (i.e., high school, college, post-college level) based on access to healthcare after accounting for insurance, income, employment, marital status, English language proficiency, and vision quality. The integrated theory of health behavior change, the theoretical framework used for this research, proposes that changes in health behavior can be improved by various factors such as fostering …

Prevention Practices And West Nile Virus Infection Among Ethnic Minorities, Texas, Bayabel Debebe Mengistu

Walden Dissertations and Doctoral Studies

Abstract

West Nile virus (WNV) is a major public health problem and the cause of nearly 25% of the world's economic burden of disease. While the risk factors for developing West Nile fever and West Nile disease from WNV infection have been identified, it is not known how knowledge, attitude, behavior (KAB), access to health care (AHC), and comorbidities are associated with prevention practices of WNV infection among ethnic minorities. The aim of this study was to examine the association between KAB, AHC, comorbidities, and prevention practices of WNV infection among ethnic minorities in Texas. KAB, AHC. Comorbidities were used …

Planned Behavior And Congolese Physicians’ Practice: Predicting Advanced Preventive Health Services Provision, Jean-Clément Milabu Mumbusi

Walden Dissertations and Doctoral Studies

The provision of preventive services, health promotion, and health maintenance has become the cornerstone of primary care practice in the United States and other Western countries to prevent morbidity and premature mortality and to increase the quality and years of a healthy life. Unfortunately, the delivery of these advanced preventive health services (APHS) has been sporadic in the Democratic Republic of Congo, a country with poor health indicators. The purpose of this cross-sectional mixed-method study was to apply Ajzen’s theory of planned behavior (TPB) to predict the intention of Congolese primary care physicians (PCPs) in the provision of APHS. Using …

The Impact Of Dietary Intake On Mortality Risk In Colorectal Cancer Survivors, Ellen Chow

Walden Dissertations and Doctoral Studies

The colorectal cancer (CRC) survivor population is increasing in the United States. The lack of effective dietary recommendations in recurrence prevention undermines the health-related quality of life of survivors. Grounded in the socioecological model, dietary behavior is a personal-level risk factor that individuals may control. This study investigated the CRC-specific mortality risk as predicted by diet quality, dietary fiber intake, and dietary fat intake in hope of contributing to future dietary recommendations. A secondary analysis using data from 1,166 CRC survivors in the Multiethnic Cohort Study was analyzed via Cox proportional hazard regression models to estimate mortality risk. Results from …

Voluntary Male Circumcision And Risk For Human Immunodeficiency Virus In Homa Bay, Kenya, George Obhai Gabriel

Walden Dissertations and Doctoral Studies

The role played by the belief about voluntary medical male circumcision (VMMC) in predicting HIV status has not been examined. The purpose of this study was to investigate whether there were any differences between belief about VMMC, unprotected sex, age, number of sexual partners, relationship status, and HIV status among circumcised males aged between 18-49 years in Homa Bay County, Kenya. Drawing from the health belief model and case-control study design, 936 men were recruited based on their HIV status (468 HIV cases and 468 controls). A bivariate logistic regression was applied, and the results indicated that unprotected sex, age, …