Digital Commons Network^™

Identification Of Medicare Recipients At Highest Risk For Clostridium Difficile Infection In The Us By Population Attributable Risk Analysis, Erik R. Dubberke, Margaret A. Olsen, Dustin Stwalley, Ciarán P. Kelly, Dale N. Gerding, Yinong Young-Xu, Cedric Mahé

Dartmouth Scholarship

Background: Population attributable risk percent (PAR%) is an epidemiological tool that provides an estimate of the percent reduction in total disease burden if that disease could be entirely eliminated among a subpopulation. As such, PAR% is used to efficiently target prevention interventions. Due to significant limitations in current Clostridium difficile Infection (CDI) prevention practices and the development of new approaches to prevent CDI, such as vaccina- tion, we determined the PAR% for CDI in various subpopulations in the Medicare 5% random sample. Methods: This was a retrospective cohort study using the 2009 Medicare 5% random sample. Comorbidities, infections, and healthcare …

Multilevel Analysis Of Individual, Neighborhood, And Health Care Facility Characteristics Associated With Achievement And Maintenance Of Hiv Viral Suppression Among Persons Newly Diagnosed With Hiv In New York City, Ellen W. Wiewel

Dissertations, Theses, and Capstone Projects

Objective

To investigate the effect of individual, health care facility, and neighborhood characteristics on achievement and maintenance of HIV viral suppression, among New York City residents aged 13 years and older diagnosed with HIV between 2006 and 2012.

Methods

I used individual-level data from the New York City HIV surveillance registry and Case Surveillance-Based Sampling, facility-level data from the surveillance registry, and neighborhood-level data from the U.S. Census and American Community Survey. The outcomes of interest were first viral suppression after diagnosis (Aims 1 and 3; ≤400 copies/mL) and virologic failure after first suppression among persons who achieved suppression (Aim …

The Impact Of Climate Variability And Conflict On Childhood Diarrhea And Malnutrition In West Africa, Gillian Dunn

Dissertations, Theses, and Capstone Projects

Objectives: This dissertation aims to contribute to our understanding of how climate variability and armed conflict impacts diarrheal disease and malnutrition among young children in West Africa. Two studies examine the associations between climate and diarrheal disease across the whole study area – ten countries in West Africa during the period 2008-2013. The third study examines diarrheal disease and malnutrition in Northeast Nigeria before (2008) and after (2013) the start of the current armed conflict in the area.

Methods: Outcome variables and child, caregiver, and household characteristics for these studies are from the Demographic and Health Surveys. Additional datasets include …

Models For Hsv Shedding Must Account For Two Levels Of Overdispersion, Amalia Magaret

UW Biostatistics Working Paper Series

We have frequently implemented crossover studies to evaluate new therapeutic interventions for genital herpes simplex virus infection. The outcome measured to assess the efficacy of interventions on herpes disease severity is the viral shedding rate, defined as the frequency of detection of HSV on the genital skin and mucosa. We performed a simulation study to ascertain whether our standard model, which we have used previously, was appropriately considering all the necessary features of the shedding data to provide correct inference. We simulated shedding data under our standard, validated assumptions and assessed the ability of 5 different models to reproduce the …

Bleeding Control - The Next Step In Active Shooter Guidance, Birch X. Barron

Homeland Security Publications

No abstract provided.

Genomic Diversity Of Epec Associated With Clinical Presentations Of Differing Severity, Tracy H. Hazen, Michael S. Donnenberg, Sandra Panchalingam, Martin Antonio, Anowar Hossain, Inacio Mandomando, John Benjamin Ochieng, Shahida Qureshi, Farheen Quadri, Anita K. M. Zaidi

Department of Paediatrics and Child Health

Enteropathogenic Escherichia coli (EPEC) are diarrhoeagenic E. coli, and are a significant cause of gastrointestinal illness among young children in developing countries. Typical EPEC are identified by the presence of the bundle-forming pilus encoded by a virulence plasmid, which has been linked to an increased severity of illness, while atypical EPEC lack this feature. Comparative genomics of 70 total EPEC from lethal (LI), non-lethal symptomatic (NSI) or asymptomatic (AI) cases of diarrhoeal illness in children enrolled in the Global Enteric Multicenter Study was used to investigate the genomic differences in EPEC isolates obtained from individuals with various clinical outcomes. A …

U.S. Biological Quarantine: A Look At The Legal Framework, Katherine T. Rooney

Journal of Legislation

Biological terrorism is a growing problem. Search and seizure protections have an on-going balancing relationship with national security that is balanced by a least restrictive means test. The Kaci Hickox case exposed the difficulty of maintaining the civil rights protections of search and seizure while combating a potentially catastrophic danger.

Poor Drug Adherence And Lack Of Awareness Of Hypertension Among Hypertensive Stroke Patients In Kampala, Uganda: A Cross Sectional Study Neurology, Martha Sajatovic, Cathy Sila, Michael Degeorgia

Faculty Scholarship

Background: Raised blood pressure (BP) remains an important risk factor for cardiovascular diseases such as stroke. Adherence to therapeutic recommendations especially antihypertensive drugs is important in BP control. The aim of the study was to assess the stroke risk factors and levels of adherence among hypertensive patients with stroke in Kampala Uganda. Methods: In a cross-sectional study we describe 112 hypertensive subjects with stroke from two Kampala city hospitals. A standardized pre-tested questionnaire was used to collect medical history, clinical details, radiological findings and laboratory data. Results: A total of 112 hypertensive subjects with stroke were enrolled between May 2013 …

Older Adults With Elevated Bmi Are At Greater Risk Of Accelerated Knee Osteoarthritis: Data From The Osteoarthritis Initiative, Kyle D. Wallace

Master of Public Health Program Student Publications

Background: Around 35% of adults with osteoarthritis (OA) have knee osteoarthritis (KOA), which generally progresses over several years; however, some individuals experience accelerated KOA (AKOA), a rapid progression to end-stage disease within 48-months. Purpose: To assess baseline differences among those who develop the different types of KOA, and to determine if baseline characteristics and measures can be used to predict an individual’s KOA status (Common KOA or AKOA) 48 months later.

Methods: Cross-sectional analysis of data from the Osteoarthritis Initiative (OAI) was completed. At baseline, 4,769 participants were enrolled. Data from individuals (n = 1,561) free of radiographic KOA (Kellgren-Lawrence …

A Set Of Smart Practices For Public Health Department Accreditation By Public Health Accreditation Board, Veer Raghava Kumar Marthy

Master of Public Health Program Student Publications

Purpose: The purpose of this research is to determine smart practices that could be used by a public health department to have an efficient, productive and successful accreditation by the Public Health Accreditation Board (PHAB).

Methodology: Accreditation coordinators of eight accredited Ohio-based public health departments were interviewed in 2016. A qualitative study was conducted using semi-structured interviews with funneling. Results were generated using a hybrid model of analysis that included a content analysis to make valid inferences from the interview data.

Results: The accreditation coordinators identified a series of smart practices. Six prominent themes that were identified and labeled as …

Sub-Saharan Africa’S “Other Diseases”: A Comparison Of The Global Response To Neglected Tropical Diseases And Hiv/Aids In Ghana, Rebecca Brosch

Political Science: Student Scholarship & Creative Works

Neglected tropical diseases (NTDs) refer to a group of diseases that affect 1.4 billion people worldwide, most commonly in low and low-middle income nations. These conditions can cause disabling and disfiguring effects that keep those inflicted from escaping poverty, leading to increased economic losses in already impoverished areas in Ghana and the rest of Sub-Saharan Africa. Although NTDs affect significantly more of the Ghanaian population, more government resources are given to HIV/AIDS (which only affects an estimated 1.5% of citizens). This research identifies the current response to NTDs (including government policy and NGO support) as well as how more global …

Public Health Measures Derived From The Jewish Tradition, Noam Zeffren, Tova Chein, Robert Stern

Touro College of Osteopathic Medicine (New York) Publications and Research

The authors discuss public health measures that are described in the Torah and rabbinic literature.

Detectable Viral Load In Late Pregnancy Among Women In The Rwanda Option B+ Pmtct Program: Enrollment Results From The Kabeho Study., Michelle M Gill, Heather J Hoffman, Emily A Bobrow, Placidie Mugwaneza, Dieudonne Ndatimana, Gilles F Ndayisaba, Cyprien Baribwira, Laura Guay, Anita Asiimwe

Epidemiology Faculty Publications

There are limited viral load (VL) data available from programs implementing "Option B+," lifelong antiretroviral treatment (ART) to all HIV-positive pregnant and postpartum women, in resource-limited settings. Extent of viral suppression from a prevention of mother-to-child transmission of HIV program in Rwanda was assessed among women enrolled in the Kigali Antiretroviral and Breastfeeding Assessment for the Elimination of HIV (Kabeho) Study. ARV drug resistance testing was conducted on women with VL>2000 copies/ml. In April 2013-January 2014, 608 pregnant or early postpartum HIV-positive women were enrolled in 14 facilities. Factors associated with detectable enrollment VL (>20 copies/ml) were examined …

Computerized Tailored Interventions To Enhance Prevention And Screening For Hepatitis C Virus Among People Who Inject Drugs: Protocol For A Randomized Pilot Study., Ryan P Westergaard, Shawnika J. Hull, Alana Merkow, Laura K Stephens, Karli R Hochstatter, Heidi K Olson-Streed, Lisa M Baker, Timothy M Hess

Prevention and Community Health Faculty Publications

BACKGROUND: Hepatitis C virus (HCV) infection is a growing problem among people who inject drugs. Strategies to reduce disease transmission (eg, syringe exchange programs) and facilitate HCV screening and linkage are available but are under-utilized in many communities affected by injection drug use. Novel approaches to increasing the use of these strategies are needed.

OBJECTIVE: The goals of this project are to (1) develop and pilot test a computerized tailored intervention for increasing HCV screening and decreasing risky drug use behavior among people who inject drugs and (2) determine the feasibility of disseminating such an intervention using peer-based referrals in …

Factors Underlying Ebola Virus Infection Among Health Workers, Kenema, Sierra Leone, 2014-2015, Mikiko Senga, Kimberly Pringle, Andrew Ramsay, David Brett-Major, Robert A. Fowler, Issa French, Mohamed Vandi, Josephine Sellu, Christian Pratt, Josephine Saidu, Nahoko Shindo, Daniel G. Bausch, Sierra Leone Kenema District Task Force And Kenema Government Hospital

Journal Articles: Epidemiology

BACKGROUND: Ebola virus disease (EVD) in health workers (HWs) has been a major challenge during the 2014-2015 outbreak. We examined factors associated with Ebola virus exposure and mortality in HWs in Kenema District, Sierra Leone.

METHODS: We analyzed data from the Sierra Leone National Viral Hemorrhagic Fever Database, contact tracing records, Kenema Government Hospital (KGH) staff and Ebola Treatment Unit (ETU) rosters, and burial logs.

RESULTS: From May 2014 through January 2015, 600 cases of EVD originated in Kenema District, including 92 (15%) HWs, 66 (72%) of whom worked at KGH. Among KGH medical staff and international volunteers, 18 of …

Project Soar's Approach To Research Utilization, Project Soar

HIV and AIDS

Project SOAR (Supporting Operational AIDS Research) conducts operations research (OR) with the aim of producing a large, multi-faceted body of high-quality evidence that can guide the planning and implementation of programs and policies for HIV prevention, care, and treatment. OR provides the needed evidence to make sound policy and program decisions at national, subnational, and service-delivery levels by identifying practical solutions to challenges delivering program services. Translating OR findings into action at these levels requires two-way information exchange between people who can apply research findings and researchers. Project SOAR’s premise is that this exchange will bring about eventual use of …

Retrospective Review Of Task-Shifting Community-Based Programs Supporting Arv Treatment And Retention In Uganda, Sam Kalibala, Jerry Okal, Brady Zieman, Nrupa Jani, Lung Vu, Josephine Birungi, Stephen Okoboi, Jonathan Wangisi, Christine Nabiryo, Joanne Lyavala Okullu, Michael Etukoit, Lydia Buzaalirwa, Augustine Lubanga, Paul Kiyingi, Jonathan Ikapule, Syson Nakyeyune, Stephen Nakibinge, Penninah Lutung, Samuel Waliggo, Joseph Nsamba, Yashien Wamanga, Joseph Kamya, Robina Sentongo, Robert Yiga

HIV and AIDS

The purpose of this study was to examine examples of task-shifting programs in Uganda with the aim of generating data that could inform the development of task-shifting policies, guidelines, and practices. The overall purpose of the study was to contribute to the growing knowledge base about task-shifting by describing the service delivery approaches of three purposively selected major AIDS service organizations (ASOs) in Uganda that have adopted task-shifting. The study showed that in the three ASOs, almost all key tasks in antiretroviral therapy (ART), including determining eligibility, initiating ART, and dispensing antiretrovirals, can be feasibly shifted to lower-level cadres or …

The Trend Of Communicable And Non-Communicable Diseases In East African Community (Eac) Countries: Case Study Of Burundi, Rwanda, And Uganda - 1990 To 2013, Emile Shumbusho

Master of Public Health Program Student Publications

Background: In low and middle-income countries (LMICs), non-communicable diseases (NCDs) are rapidly emerging alongside a well-documented persistence of communicable diseases (CDs) in fragile health care systems. In sub-Saharan Africa, chronic NCDs are expected to overtake CDs as the leading cause of death. The aim of this study was to compare mortality rates due to CDs and NCDs between developed countries, developing countries, Burundi, Rwanda, and Uganda from 1990 to 2013.

Methods: A descriptive study with longitudinal and cross-sectional analyses of mortality rates was conducted using the global burden of disease (GBD) study data. Tableau Public 9.3 software was utilized to …

Is There A Link Between Zika Virus And Microcephaly In Neonates?, Yuliya Salanovich

The Science Journal of the Lander College of Arts and Sciences

With Zika virus spreading worldwide, a lot of attention is drawn to researching its pathogenesis and etiology. It has also been noticed by various research groups and such health agencies such as CDC and WHO that there might be a connection between ZIKV and microcephaly, due to the spiking number of cases of microcephaly reported in areas with affected patients. Temporal and geographical data from the affected ZIKV areas, including Brazil and French Polynesia, suggests a connection between microcephaly and the virus. Tests of amniotic fluids of pregnant women with reported Zika virus infection and microcephalic fetuses revealed the presence …

The Respiratory Protection Effectiveness Clinical Trial (Respect): A Cluster-Randomized Comparison Of Respirator And Medical Mask Effectiveness Against Respiratory Infections In Healthcare Personnel., Lewis J. Radonovich, Mary T. Bessesen, Derek A.T. Cummings, Aaron Eagan, Charlotte A. Gaydos, Cynthia Gibert, Geoffrey J. Gorse, +8 Additional Authors

Medicine Faculty Publications

BACKGROUND: Although N95 filtering facepiece respirators and medical masks are commonly used for protection against respiratory infections in healthcare settings, more clinical evidence is needed to understand the optimal settings and exposure circumstances for healthcare personnel to use these devices. A lack of clinically germane research has led to equivocal, and occasionally conflicting, healthcare respiratory protection recommendations from public health organizations, professional societies, and experts.

METHODS: The Respiratory Protection Effectiveness Clinical Trial (ResPECT) is a prospective comparison of respiratory protective equipment to be conducted at multiple U.S. study sites. Healthcare personnel who work in outpatient settings will be cluster-randomized to …

Improving Hiv Surveillance Data For Public Health Action In Washington, Dc: A Novel Multiorganizational Data-Sharing Method, Joanne Ocampo, J. C. Smart, Adam Allston, Reshma Bhattacharjee, Sahithi Boggavarapu, Amanda D. Castel, +13 More

GW Biostatistics Center

Background: The National HIV/AIDS Strategy calls for active surveillance programs for human immunodeficiency virus (HIV) to more accurately measure access to and retention in care across the HIV care continuum for persons living with HIV within their jurisdictions and to identify persons who may need public health services. However, traditional public health surveillance methods face substantial technological and privacy-related barriers to data sharing.

Objective: This study developed a novel data-sharing approach to improve the timeliness and quality of HIV surveillance data in three jurisdictions where persons may often travel across the borders of the District of Columbia, Maryland, and Virginia. …

D-Dimer Levels Before Hiv Seroconversion Remain Elevated Even After Viral Suppression And Are Associated With An Increased Risk Of Non-Aids Events, Matthew S Freiberg, Ionut Bebu, Russell Tracy, Kaku So-Armah, Jason Okulicz, Anuradha Ganesan, Adam Armstrong, Thomas O'Bryan, David Rimland, Amy C Justice, Brian K Agan

GW Biostatistics Center

The mechanism underlying the excess risk of non-AIDS diseases among HIV infected people is unclear. HIV associated inflammation/hypercoagulability likely plays a role. While antiretroviral therapy (ART) may return this process to pre-HIV levels, this has not been directly demonstrated. We analyzed data/specimens on 249 HIV+ participants from the US Military HIV Natural History Study, a prospective, multicenter observational cohort of >5600 active duty military personnel and beneficiaries living with HIV. We used stored blood specimens to measure D-dimer and Interleukin-6 (IL-6) at three time points: pre-HIV seroconversion, ≥6 months post-HIV seroconversion but prior to ART initiation, and ≥6 months post-ART …

Generalized Confidence Intervals And Fiducial Intervals For Some Epidemiological Measures., Ionut Bebu, G. Luta, T. Mathew, B. K. Agan

GW Biostatistics Center

For binary outcome data from epidemiological studies, this article investigates the interval estimation of several measures of interest in the absence or presence of categorical covariates. When covariates are present, the logistic regression model as well as the log-binomial model are investigated. The measures considered include the common odds ratio (OR) from several studies, the number needed to treat (NNT), and the prevalence ratio. For each parameter, confidence intervals are constructed using the concepts of generalized pivotal quantities and fiducial quantities. Numerical results show that the confidence intervals so obtained exhibit satisfactory performance in terms of maintaining the coverage probabilities …

Interruptions Of Antiretroviral Therapy In Children And Adolescents With Hiv Infection In Clinical Practice: A Retrospective Cohort Study In The Usa., Natella Rakhmanina, Kam S Lam, Jaclyn Hern, Heather A. Young, Alex Walters, Amanda D. Castel

Epidemiology Faculty Publications

INTRODUCTION: Changes in combination antiretroviral therapy (cART) throughout childhood challenge the continuity of paediatric HIV treatment. This study aimed to evaluate the prevalence of treatment interruption (TI), including lamivudine (3TC) monotherapy, and the relationship of TI to virologic and immunologic parameters in HIV-infected paediatric patients.

METHODS: Nested within a prospective observational study of a city-wide cohort of HIV-infected persons in the District of Columbia, this sub-study collected retrospective data on antiretroviral therapy, enrolment (endpoint) and historic (lifelong) CD4 counts and HIV RNA viral load (VL) of the paediatric cohort. TI was defined as interruption of cART ≥4 consecutive weeks. Data …

An Analysis Of Water Collection Labor Among Women And Children In 24 Sub-Saharan African Countries., Jay Graham, Mitsuaki Hirai, Seung-Sup Kim

Environmental and Occupational Health Faculty Publications

BACKGROUND: It is estimated that more than two-thirds of the population in sub-Saharan Africa (SSA) must leave their home to collect water, putting them at risk for a variety of negative health outcomes. There is little research, however, quantifying who is most affected by long water collection times.

OBJECTIVES: This study aims to a) describe gender differences in water collection labor among both adults and children (< 15 years of age) in the households (HHs) that report spending more than 30 minutes collecting water, disaggregated by urban and rural residence; and b) estimate the absolute number of adults and children affected by water collection times greater than 30 minutes in 24 SSA countries.

METHODS: We analyzed data from the Demographic Health Survey (DHS) and the Multiple Indicator Cluster Survey (MICS) (2005-2012) to describe water collection labor in 24 SSA countries.

RESULTS: Among households spending more than …

Legal Space For Syringe Exchange Programs In Hot Spots Of Injection Drug Use-Related Crime., Sean T Allen, Monica S. Ruiz, Jeff Jones, Monique M Turner

Prevention and Community Health Faculty Publications

BACKGROUND: Copious evidence indicates that syringe exchange programs (SEPs) are effective structural interventions for HIV prevention among persons who inject drugs (PWID). The efficacy of SEPs in supporting the public health needs of PWID populations is partially dependent on their accessibility and consistent utilization among injectors. Research has shown that SEP access is an important predictor of PWID retention at SEPs, yet policies exist that may limit the geographic areas where SEP operations may legally occur. Since 2000 in the District of Columbia (DC), SEP operations have been subject to the 1000 Foot Rule (§48-1121), a policy that prohibits the …

Understanding Hiv-Related Vulnerabilities And Stigma Among Egyptian Youth, Nahla G. Abdel-Tawab, Doaa Oraby, Sally Saher, Sarah Ismail

Poverty, Gender, and Youth

The overall objective of this study is to provide an evidence-based description and interpretation of the HIV-related risks and vulnerabilities faced by different subgroups of youth in Egypt. The report is part of a six-country study that was conducted by the Population Council in Egypt, Kenya, Nigeria, Senegal, South Africa, and Uganda. The study examines social, economic, cultural, and legal factors that may contribute to youth’s increased vulnerability to HIV and documents the situation of the policy and programmatic responses. The study identified poverty, unemployment, delayed marriage, and gender inequality as examples of factors that increase young people’s risk-taking behavior …

Using Peers To Improve Sexual And Reproductive Health And Rights Of Young People Living With Hiv In Uganda: Findings From A Link Up Evaluation, Population Council

HIV and AIDS

Link Up, a global consortium led by the International HIV/AIDS Alliance, sought to meet the immediate HIV care needs and also the broader sexual and reproductive health and rights (SRHR) for Ugandan young people living with HIV (YPLHIV), by creating linkages between comprehensive community- and facility-based HIV and SRHR services. In addition, Link Up delivered health education, counseling, and peer support tailored to the needs of YPLHIV in order to educate and empower them to recognize their rights, and feel confident in seeking health services. This brief presents findings from the Population Council’s evaluation of Link Up activities among YPLHIV …

Evaluation Of Guideline-Recommended Combined Antiretroviral Treatment Regimens In Commercially-Insured Patients Living In The United States Between 2007 And 2009, Joye Brigitte Allen

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

Background: Randomized clinical trials of combination antiretroviral therapy (cART) inform the use of specific antiretrovirals (ARV) and their combination for optimizing therapeutic efficacy. It is critical that patients have access to and receive the most appropriate first-line treatment.

Objective: To examine factors that impact receiving initial guideline-recommended cART within a cohort of commercially insured patients in the United States (US)

Research Design: A population based cohort study.

Data Sources: A secondary administrative insurance claims database.

Subjects: Employed, commercially insured individuals with HIV who were continuously eligible for insurance coverage from January 2007 through December 2009 and received a new ARV …

Undiagnosed Pulmonary Obstruction And Restriction And Dust Exposure: Pilot Investigations Examining The Relationship Among Agricultural Workers, Caroline E. Holsinger

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

Chronic obstructive pulmonary disease (COPD) is a progressive disease that is characterized by limited airflow.1 In the United States (U.S.) alone, COPD is the third leading cause of death.2,3 While smoking remains the strongest risk factor for COPD, 20 percent of patients who die from COPD have never smoked.5–7 The American Thoracic 3 Society showed that about 15% of COPD cases might be attributable to workplace exposure.8 Agricultural dust exposure has long been recognized as a cause of decreased respiratory function, and exposures to both forms of dust may exacerbate other important risk factors of COPD and lead to the …