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- Agriculture (2)
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Articles 1 - 30 of 48
Full-Text Articles in Physical Sciences and Mathematics
Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang
Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang
Walden Dissertations and Doctoral Studies
Algal blooms result in the formation of cyanotoxic conditions in a freshwater lake causing severe detrimental impacts to community and public health. Nitrogen, phosphorous, and ammonia stimulate the growth of phytoplankton biomass and algae, as measured by chlorophyll. This retrospective quantitative research study, grounded in the socioecological model, examined the relationship between nutrient pollutants and chlorophyll-a (Chl-a) that forecast harmful algal blooms, a precursor to cyanotoxins. A former impaired lake, Machado Lake in California, provided an ideal setting to assess relationships among nutrient indicators and Chl-a post-lake rehabilitation. Correlation and multiple regression analyses were performed to determine if a relationship …
Occupational Risk Perceptions Among Foreign-Born Construction Workers In Central Florida, Matthew Edison Law
Occupational Risk Perceptions Among Foreign-Born Construction Workers In Central Florida, Matthew Edison Law
Walden Dissertations and Doctoral Studies
Hispanic and Latino foreign-born construction workers in the United States experience higher rates of serious injuries and fatalities in the workplace than their native-born peers. Previous research has pointed to specific vulnerabilities among this population, including birthplace, age of the worker, language barriers, and education level, but little to no research has examined addressable risk factors, such as occupational risk perceptions, among this population. The purpose of this quantitative study was to determine the relationship between birthplace, number of years working in the United States, and occupational risk perceptions while controlling for age of the worker, language barriers, and education …
Sun Exposure And Protective Behaviors Among U.S. Hispanic Farmworkers, Claudia Marie Delgado Cebollero
Sun Exposure And Protective Behaviors Among U.S. Hispanic Farmworkers, Claudia Marie Delgado Cebollero
Walden Dissertations and Doctoral Studies
Sun exposure increases the risk of sun-related illnesses and skin cancer among U.S. Hispanic farmworkers. Reinforced by the health belief model, the purpose of this study was to determine the association between socio-demographic factors (i.e., age, educational attainment, gender, income, and marital status) and skin cancer with the level of sun exposure (sun’s effect on skin, sunburn reported) and protective behaviors (use of cap/visor, use of sunscreen) among adult Hispanic farmworkers in the United States. The study included Hispanic farmworkers aged 21 or older (N = 112) who responded to the 2015 National Health Interview Survey. Ordinal logistic regression showed …
Occupational Risk Perceptions Among Foreign-Born Construction Workers In Central Florida, Matthew Edison Law
Occupational Risk Perceptions Among Foreign-Born Construction Workers In Central Florida, Matthew Edison Law
Walden Dissertations and Doctoral Studies
Hispanic and Latino foreign-born construction workers in the United States experience higher rates of serious injuries and fatalities in the workplace than their native-born peers. Previous research has pointed to specific vulnerabilities among this population, including birthplace, age of the worker, language barriers, and education level, but little to no research has examined addressable risk factors, such as occupational risk perceptions, among this population. The purpose of this quantitative study was to determine the relationship between birthplace, number of years working in the United States, and occupational risk perceptions while controlling for age of the worker, language barriers, and education …
Laboratory Practices And Antimicrobial Resistance In A Florida Hospital, Crispina Marie Sy-Trias
Laboratory Practices And Antimicrobial Resistance In A Florida Hospital, Crispina Marie Sy-Trias
Walden Dissertations and Doctoral Studies
Antibiotic resistance is a health threat affecting millions of Americans. Microorganisms develop resistance to antibiotics, rendering them useless for treating infections. The purpose of this quantitative study was to assess the associations between sample processing time and antibiotic resistance and is based on the health belief model. A retrospective specimen tracking activity of data from November 2019 to November 2020 was obtained by random sampling of 246 bacterial cultures. One hundred ninety-six (80%) samples were processed on time, and 50 (20%) were delayed; 167 (68%) samples were determined to have the presence of antimicrobial resistance (AMR), and 79 (32%) with …
Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang
Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang
Walden Dissertations and Doctoral Studies
Algal blooms result in the formation of cyanotoxic conditions in a freshwater lake causing severe detrimental impacts to community and public health. Nitrogen, phosphorous, and ammonia stimulate the growth of phytoplankton biomass and algae, as measured by chlorophyll. This retrospective quantitative research study, grounded in the socioecological model, examined the relationship between nutrient pollutants and chlorophyll-a (Chl-a) that forecast harmful algal blooms, a precursor to cyanotoxins. A former impaired lake, Machado Lake in California, provided an ideal setting to assess relationships among nutrient indicators and Chl-a post-lake rehabilitation. Correlation and multiple regression analyses were performed to determine if a relationship …
Length Of Stay In A Homeless Shelter And Mitigating Homelessness, Uwemedimo S. Etteyit
Length Of Stay In A Homeless Shelter And Mitigating Homelessness, Uwemedimo S. Etteyit
Walden Dissertations and Doctoral Studies
AbstractHomelessness is a major public health issue in the United States. Every night, thousands of people have no residence to call their own. Most homeless persons turn to homeless shelters for help. Despite the homeless shelters, the problem of homelessness persists. This study examined the concept that the length of time spent at a homeless shelter is related to the homeless persons mitigating their homelessness through home placement, jobs, and healthcare access. Homelessness was examined using the socioecological model with its attendant levels of influence. On the intrapersonal level, socioeconomic status, education, old age, veteran status, and disability were factors. …
Effects Of Indoor Air Pollutants On Childhood Asthma: African American Parents’ Perspective, Marcia Maureen Haughton Lewis
Effects Of Indoor Air Pollutants On Childhood Asthma: African American Parents’ Perspective, Marcia Maureen Haughton Lewis
Walden Dissertations and Doctoral Studies
AbstractIndoor air pollution has been implicated in many chronic health conditions, including childhood asthma, which is more prevalent among African American children. Children are more susceptible than adults to the effects of exposure to indoor air pollution; however, many parents may not be aware of the polluting impacts of products in their homes and are inadvertently placing their families at risk for adverse health outcomes. Understanding parents’ perceptions and experiences is essential for planning and developing educational programs and interventions for improving indoor environment management as part of asthma management in children. This descriptive phenomenological study aimed to explore parents’ …
Stigma And Discrimination’S Effect On Hiv Testing Of Pregnant Women In Nigeria, Charles Echezona Nzelu
Stigma And Discrimination’S Effect On Hiv Testing Of Pregnant Women In Nigeria, Charles Echezona Nzelu
Walden Dissertations and Doctoral Studies
The utilization of HIV testing services among pregnant women in Nigeria has not been optimal. Although much is known about the determinants of HIV testing among pregnant women, there is a gap in knowledge on determinants for pregnant women infected with the virus, specifically whether stigma and discrimination are barriers. The purpose of this study was to examine the effect of stigmatizing attitudes and personal knowledge of discriminatory practices towards persons living with HIV/AIDS on the decision by pregnant Nigerian women aged 15-49 years to test for HIV during antenatal visits or childbirth. The health belief model served as the …
Meaningful Use Criteria And Staff Accountability In An Office Setting, Marcia Ionie Pender
Meaningful Use Criteria And Staff Accountability In An Office Setting, Marcia Ionie Pender
Walden Dissertations and Doctoral Studies
Proper documentation for meaningful use (MU) criteria within electronic health records (EHRs) was identified as an issue for office staff at a local primary care office in a metropolitan area of Central Florida. The project question addressed the local gap in knowledge about MU standards necessary to ensure correct documentation of EHRs. The purpose of this doctoral project was to provide an educational program for staff to ensure compliance with the HITECH Act of 2009. Lewin’s Change Theory and Knowles Theory of Adult learning were the conceptual foundations for the educational program. The project question was to determine whether a …
Risk Factors For Foodborne Illness Outbreaks In Retail Food Establishments, Brendalee Viveiros
Risk Factors For Foodborne Illness Outbreaks In Retail Food Establishments, Brendalee Viveiros
Walden Dissertations and Doctoral Studies
Despite policies and interventions over the last two decades, foodborne illness remains a significant public health concern. According to the CDC’s Foodborne Disease Outbreak Surveillance System, 60% of reported foodborne illness outbreaks involved food that was prepared at a restaurant. Reducing foodborne illness outbreaks that occur at restaurants would have a significant impact on the overall number of foodborne illnesses that occur each year. The purpose of this study was to quantitatively analyze the differences in risk factors in food establishments that have had a foodborne illness outbreak compared to food establishments that have not. This study used Reckwitz’s theory …
The Causes And Control Measures Of Extended Spectrum Beta-Lactamase Producing Enterobacteriaceae In Long-Term Care Facilities, Ismaila Olatunji Sule
The Causes And Control Measures Of Extended Spectrum Beta-Lactamase Producing Enterobacteriaceae In Long-Term Care Facilities, Ismaila Olatunji Sule
Walden Dissertations and Doctoral Studies
Due to extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-PE), infections among residents are increasing in long-term care facilities (LTCFs), resulting in high rate of morbidity and healthcare costs. ESBL-PE resists empirical antibiotics and reduces treatment options, and a designated infection control team is unavailable to prevent the prevalence of the disease. Ecological theory guided this study. A systematic review and meta-analysis were conducted to characterize the causes of ESBL-PE and evaluate the infection control strategies within LTCFs. Multiple regression analysis (MRA) was included as supplementary statistical analysis to identify relationships between LTCFs, geographical locations, infection control measures (ICMs), and ESBL-PE. A systematic search …
Impact Of Case Management On Childhood Lead Exposure In Marion County, Indiana, Maliki Yacouba
Impact Of Case Management On Childhood Lead Exposure In Marion County, Indiana, Maliki Yacouba
Walden Dissertations and Doctoral Studies
The Centers for Disease Control and Prevention recently declared that no amount of childhood blood lead level (BLL) is safe. The purpose of this quantitative study with a retrospective cohort design was to evaluate the effectiveness of case management intervention on children diagnosed with elevated BLL (EBLL; ≥ 5 μg/dL) in Marion, County, Indiana. The health belief model was used as the theoretical foundation for the study. A data set of 160 lead exposure case management records was analyzed to find whether: (a) BLL at post-case-management time significantly differ from BLL at baseline (b) BLL at post-case-management time is affected …
Predictors Of Colorectal Cancer Screening Among Maryland Adults, Aged 50–75 Years, Pamela Manwi Asangong
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 …
Lifestyle Factors And Social Determinants As Predictors Of Weight/Body Mass Index, Uthman Alhaji Baba
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 …
Microcystins And Liver Disease Mortality, Insights From An Ecological Study, Rajesh Tirpaul Melaram
Microcystins And Liver Disease Mortality, Insights From An Ecological Study, Rajesh Tirpaul Melaram
Walden Dissertations and Doctoral Studies
Microcystins (MCs) are toxic secondary metabolites produced by freshwater cyanobacteria. Algal bloom subsidence can stimulate MC release, which can impair liver function if orally exposed to in large doses. The purpose of this retrospective, U.S. ecological study was to determine if MC exposure represented an environmental risk factor for liver disease mortality using a socioecological approach. A longitudinal ecological substudy investigated the association between average total MCs in Lake Washington and Lake Manatee and age-adjusted chronic liver disease (CLD)/cirrhosis death rates in Brevard County and Manatee County, Florida (FL). A prediction model of total MCs was deduced by quantifying levels …
Hazardous Waste Site Proximity And Type 2 Diabetes: From Youths To Adults, Theresa Ann Johnson
Hazardous Waste Site Proximity And Type 2 Diabetes: From Youths To Adults, Theresa Ann Johnson
Walden Dissertations and Doctoral Studies
Type 2 diabetes has reached epidemic proportions in adults and youths. Persistent organic pollutants and endocrine-disrupting chemicals (EDCs), such as pesticides, dioxins, and organochlorines, are omnipresent and persist in the environment with potential for human exposure via contaminated air, waterways, soil, and human food supply. EDCs have been correlated with diabetes incidence and risks. Residential proximity to hazardous waste sites (HWS) has been correlated with increased hospital admission rates for diabetes. The study used a sample population (N = 1,724), ages ≥ 12 years from the 2005-2012 Continuous NHANES and HWS data from the National Priorities List of Superfund Sites. …
The Role Of Glucose Level On The Performance Of The Framingham Risk Score, Uohna June Thiessen
The Role Of Glucose Level On The Performance Of The Framingham Risk Score, Uohna June Thiessen
Walden Dissertations and Doctoral Studies
Cardiovascular diseases (CVD) are responsible for more deaths than any other disease, continue to threaten the quality of life for many, and is a major burden to the health care system. The Framingham Heart Study (FHS) identified the major CVD risk factors that became essential to effective CVD screening strategies and the Framingham Risk Score (FRS), is used to assess CVD risk. Based on the concepts of the health behavior model and CVD as a cardiometabolic disorder, multivariate logistic regression analysis was used to evaluate the association between fasting blood glucose (FBG) levels and a CHD event, and to determine …
A Geographic Study Of Lung And Bronchus Cancer Rates In Kentucky, Gabriel Njoh Dikong
A Geographic Study Of Lung And Bronchus Cancer Rates In Kentucky, Gabriel Njoh Dikong
Walden Dissertations and Doctoral Studies
The average age-adjusted incidence and mortality rates of lung and bronchus cancer is 55% and 56% higher in Kentucky than the national averages in the United States, respectively. Populations with low income and educational attainment, and those who live close to the mining regions across Kentucky are more affected by the high prevalence and resulting mortality rates of lung and bronchus cancer. This study was conducted because of the high incidence of lung and bronchus cancer and resulting mortality rates in the state of Kentucky that may not be caused solely by social and demographic factors. The theoretical foundation for …
Natural Environment Associations With Mental Health And Obesity Status, Adam Edwin London
Natural Environment Associations With Mental Health And Obesity Status, Adam Edwin London
Walden Dissertations and Doctoral Studies
Mental health and obesity were ranked among the health priorities of the 2014 and 2017 Community Health Needs Assessments in Kent County, Michigan. Exposure to nature is correlated to improved health outcomes across a variety of morbidities including poor mental health and obesity. This cross-sectional study set within the frameworks of attention restoration theory, environmental health, and pathways to health benefits from nature assessed county survey data including self-reported nature exposures/interactions separated into 3 domain areas: access to nature, attitudes about nature, and physical activity in nature or in nature-based activities. Binary logistic regression analyses of the 653 respondents found …
Improving Disaster Preparedness And Planning For Chronic Disease Populations, Gladys N. Gichomo
Improving Disaster Preparedness And Planning For Chronic Disease Populations, Gladys N. Gichomo
Walden Dissertations and Doctoral Studies
The significant rise of both chronic diseases and disasters in the last 20 years and the healthcare outcomes of individuals with chronic diseases during and in the aftermath of disasters have raised concerns among public health practitioners, healthcare providers, the U.S government, and the general public. Researchers have indicated that during disasters, the health outcomes of individuals with chronic diseases are significantly unfavorable compared to the general public. However, there is inadequate information on the management of chronic diseases, quality of care, and resource identification and allocation by disaster responders. This qualitative, grounded theory study, explored how the study participants …
A Geographic Study Of Lung And Bronchus Cancer Rates In Kentucky, Gabriel Njoh Dikong
A Geographic Study Of Lung And Bronchus Cancer Rates In Kentucky, Gabriel Njoh Dikong
Walden Dissertations and Doctoral Studies
The average age-adjusted incidence and mortality rates of lung and bronchus cancer is 55% and 56% higher in Kentucky than the national averages in the United States, respectively. Populations with low income and educational attainment, and those who live close to the mining regions across Kentucky are more affected by the high prevalence and resulting mortality rates of lung and bronchus cancer. This study was conducted because of the high incidence of lung and bronchus cancer and resulting mortality rates in the state of Kentucky that may not be caused solely by social and demographic factors. The theoretical foundation for …
Hydraulic Fracturing And Cause-Specific Mortality: A Multicity Comparative Epidemiological Study, Uzoma C. Nduka
Hydraulic Fracturing And Cause-Specific Mortality: A Multicity Comparative Epidemiological Study, Uzoma C. Nduka
Walden Dissertations and Doctoral Studies
Cause-specific mortality (CSM), among other global health estimates, has garnered prominence in the contemporary public health field. CSM has been associated with several factors, however, research comparing CSM for prefracking versus postfracking periods is sparse. Hydraulic fracturing or fracking is a technique of extracting oil and gas from deep underground. The purpose of this study was to evaluate the difference among mean CSM scores from 1975 through 2015 in the available cities and counties of residence in Colorado and to determine the impact of gender, marital status, county of residence, and city of residence on CSM scores (prefracking period 1975-1977 …
The Impacts Of Race, Residence, And Prenatal Care On Infant Mortality, Mary Christine Dorley
The Impacts Of Race, Residence, And Prenatal Care On Infant Mortality, Mary Christine Dorley
Walden Dissertations and Doctoral Studies
Tennessee ranks high for infant mortality (IM) in the United States. Despite public health efforts, the IM rate for Blacks is twice that of Whites mimicking what is observed nationally. Several risk factors for IM have been identified; however, it was still unclear how places of residence and prenatal care (PNC) affect IM for Tennesseans. The purpose of this study was to assess the relationship between places of residence (conceptualized by rurality and racial concentration), PNC, and IM among racial groups across Tennessee and to determine if race modified these associations. This was a cross-sectional study using data from the …
Relationships Among Vitamin D Deficiency, Metabolic Syndrome, Smoking Behavior, And Physical Activity, Ethan Pham
Relationships Among Vitamin D Deficiency, Metabolic Syndrome, Smoking Behavior, And Physical Activity, Ethan Pham
Walden Dissertations and Doctoral Studies
Aging increases the risk of both vitamin D deficiency and metabolic syndrome. Vitamin D deficiency and metabolic syndrome may be related, although there are mixed findings. Furthermore, literature suggests other factors such as physical fitness activity and smoking behavior are associated with Vitamin D deficiency and the development of metabolic syndrome. A number of studies have documented associations between Vitamin D levels and physical fitness activities, while other studies found correlations between Vitamin D levels, metabolic syndrome, and smoking behavior. However, no previous study has examined the links between physical fitness activity, smoking behavior, Vitamin D levels, and the risks …
Poverty Rate And Occurrence Of Foodborne Illness Risk Factors In Retail Facilities, Margolite Joseph Cesar
Poverty Rate And Occurrence Of Foodborne Illness Risk Factors In Retail Facilities, Margolite Joseph Cesar
Walden Dissertations and Doctoral Studies
Despite the efforts of food safety regulations and rules, food contamination remains a public health concern and prevalent vehicle of pathogens. This study identifies the predictors of food risk in different types of food establishments in Miami Dade County, Florida during the period November 2014 - November 2016. Guided by the epidemiologic triangle model, this correlational study analyzed the log number of risk factor violations and failure rates controlling for US Census sociodemographic data (2010 to 2014) for the food establishment neighborhoods by using linear and logistic regression. Results indicated that most of food entity types are significant predictors of …
Strategies Small Construction Business Managers Use To Reduce Safety Incidents In Their Organization, Peggy Ann Mcknight
Strategies Small Construction Business Managers Use To Reduce Safety Incidents In Their Organization, Peggy Ann Mcknight
Walden Dissertations and Doctoral Studies
Globally the construction industry struggles to prevent injurious and fatal safety incidents. The purpose of this single case study was to explore strategies used by construction business managers that had significantly reduced the occurance of safety incidents in a Northwest Ohio construction company. Data were collected from organizational records and interviews with 6 construction managers. The conceptual framework for this research was the concept of safety management systems. Data were compiled and organized, disassembled into fragments, grouped, and then interpreted for meaning. Methodological triangulation and member checking were used to enhance reliability and validity. Four themes emerged from the data: …
Public Health Providers' Perceptions Of Electronic Health Records In A Disaster, Sherhonda Yvette Harper
Public Health Providers' Perceptions Of Electronic Health Records In A Disaster, Sherhonda Yvette Harper
Walden Dissertations and Doctoral Studies
The introduction of federal initiatives and incentives regarding health information technology fostered a movement towards the adoption of electronic health records (EHR). Implementation of EHRs sparked discussions among healthcare providers, patients, and others about the benefits or challenges of the move from the traditional paper method to the electronic version in healthcare settings. A knowledge gap in research involving the usefulness of EHRs and their impact to the delivery of care in other settings exists. The purpose of this qualitative study was to explore public health providers' perceptions of the meaningful use of EHRs in a disaster setting. Study participants …
Spatiotemporal Variations In Coexisting Multiple Causes Of Death And The Associated Factors, Emmanuel Oluwatobi Salawu
Spatiotemporal Variations In Coexisting Multiple Causes Of Death And The Associated Factors, Emmanuel Oluwatobi Salawu
Walden Dissertations and Doctoral Studies
The study and practice of epidemiology and public health benefit from the use of mortality statistics, such as mortality rates, which are frequently used as key health indicators. Furthermore, multiple causes of death (MCOD) data offer important information that could not possibly be gathered from other mortality data. This study aimed to describe the interrelationships between various causes of death in the United States in order to improve the understanding of the coexistence of MCOD and thereby improve public health and enhance longevity. The social support theory was used as a framework, and multivariate linear regression analyses were conducted to …
Relationship Between Exposure To Phthalate And Obesity In The United States, Gladys Chidiebere Ezem
Relationship Between Exposure To Phthalate And Obesity In The United States, Gladys Chidiebere Ezem
Walden Dissertations and Doctoral Studies
Obesity is a public health problem. The global obesity problem has been attributed to unhealthy diet, inactivity, and hereditary factors. However, phthalates may also contribute to the obesity epidemic. The purpose of this cross-sectional study was to examine whether there was a relationship between exposure to phthalates and obesity among adults 18 years and older in the United States. The theoretical framework was based on the socioecological model. The quantitative, cross-sectional design, and data analysis were based on the National Health and Nutrition Examination Survey, 2011-2012 database. Descriptive statistics and multiple regression analysis were used to analyze the association between …