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Analysis Of An Sirs Age-Structured Epidemic Model With Vaccination And Vertical Transmission Of Disease, Mohammed El-Doma

Applications and Applied Mathematics: An International Journal (AAM)

An SIRS age-structured epidemic model for a vertically as well as horizontally transmitted disease under vaccination is investigated when the fertility, mortality and removal rates depend on age and the force of infection of proportionate mixing assumption type, and vaccination wanes over time. We prove the existence and uniqueness of solution to the model equations, and show that solutions of the model equations depend continuously on the initial age-distributions. Furthermore, we determine the steady states and obtain an explicitly computable threshold condition, in terms of the demographic and epidemiological parameters of the model; we then study the stability of the …

Commencement Program 2006, Loma Linda University

Commencement Programs

CONTENTS

2 | 2006 Events of Commencement

3 | The Academic Procession

4 | Significance of Academic Regalia

5 | The Good Samaritan

6 | The Speakers

15 | The University Honorees

23 | The School Honorees

37 | The Program

• School of Medicine, 38
• School of Pharmacy, 47
• School of Dentistry, 52
• School of Science and Technology and Faculty of Religion, 63
• School of Nursing, 74
• School of Allied Health Professions - Physical Therapy, 80
• School of Allied Health Professions, 86
• School of Public Health, 95

Hepatitis B And C: Prevalence And Risk Factors Associated With Seropositivity Among Children In Karachi, Pakistan, Wasim Jafri, Nadim Jafri, Javed Yakoob, Muhammad Islam, Syed Farhan Ali Tirmizi, Tazeen Jafar, Saeed Akhtar, Saeed Hamid, Hasnain Ali Shah, Sheikh Qamaruddin Nizami

Section of Gastroenterology

Background

Infections with hepatitis B virus (HBV) and hepatitis C virus (HCV) can lead to chronic liver disease and hepato-cellular carcinoma (HCC). This cross-sectional study estimated the prevalence and identified risk factors associated with Hepatitis B surface antigen (HBsAg) and HCV antibody (anti-HCV) sero-positivity among children 1 to 15 years of age.

Methods

The study targeted the low to middle socioeconomic population that comprises 80% to 85% of the population. Consent was obtained from parents of the eligible children before administering questionnaire and collected a blood sample for anti-HCV and HBsAg serology.

Results

3533 children were screened for HBsAg and …

Association Of Physical Activity With Hormone Receptor Status: The Shanghai Breast Cancer Study, Swann Arp Adams, Charles E. Matthews, James R. Hébert, Charity G. Moore, Joan E. Cunningham, Xiou-Oi Shu, Jeanette Fulton, Yutang Gao, Wei Zheng

Faculty Publications

Evidence exists that breast tumors differing by estrogen receptor (ER) and progesterone receptor (PR) status may be phenotypically distinct diseases resulting from dissimilar etiologic processes. Few studies have attempted to examine the association of physical activity with breast cancer subtype. Such research may prove instructive into the biological mechanisms of activity. Consequently, this investigation was designed to assess the relationship between physical activity and hormone receptor-defined breast cancers in a population of Asian women in which the distribution of receptor types differed from traditional Western populations. Participants, ages 25 to 64 years, were recruited into this population-based, case-control study of …

Criterion Validity Of The Pittsburgh Sleep Quality Index: Investigation In A Non-Clinical Sample, Michael A. Grandner, Daniel F. Kripke, In-Young Yoon, Shawn D. Youngstedt

Faculty Publications

The objective of this study was to investigate the reliability and validity of the Pittsburgh Sleep Quality Index (PSQI) in a non-clinical sample consisting of younger and older adults. There has been little research validating the PSQI with respect to multinight recording as with actigraphy, and more validation is needed in samples not specifically selected for clinical disturbance. Also, the degree to which the PSQI scores may reflect depressive symptoms versus actual sleep disturbance remains unclear. One-hundred and twelve volunteers (53 younger and 59 older) were screened for their ability to perform treadmill exercises; inclusion was not based on sleep …

Low Birth Weight, Very Low Birth Weight And Infant Mortality In San Bernardino County : A Secondary Analysis Of Maternal Factors, Rebecca D. Nanyonjo

Loma Linda University Electronic Theses, Dissertations & Projects

Purpose: National and state infant mortality rates have slowly declined over the last several years. Despite this reduction, San Bernardino County still has one of the highest infant mortality rates in California and racial disparities between Black and White infants not only persist but continue to widen. These disparities remain at the forefront of concern. Healthy People 2010 target objectives have yet to be reached, while national and state proposed plans have supported the statement that a community's largest health problem is initiated by its infant mortality. The purpose of this study was to investigate maternal factors through use of …

Factors That Influence The Blood Flow Response Of Skin To Electrical Stimulation, Abdul-Majeed Raja Al-Malty

Loma Linda University Electronic Theses, Dissertations & Projects

Female reproductive hormones, aging, global heating and local heating are factors affecting skin blood flow (SBF), but their effect on electrical stimulation (ES) has never been examined until the present investigation. To investigate female reproductive hormones, nine women (age= 25.6±3.5 years) with a normal menstrual cycle (MC) underwent ES in thermoneutral (25°±0.5°C) and warm environments (35°±0.5°C). To investigate aging, ES was applied on active young (n=15, age=32.1±8.3 years) and old (n=8, 64.5±6.2 years) groups in thermoneutral and warm environments. To investigate the effect of global and local heating, groups of 15 and 18 subjects (age= 18-40 years) experienced ES under …

The Relationship Between High Sensitivity C-Reactive Protein, Metabolic Syndrome And Exercise, Micheline A. Vargas

Loma Linda University Electronic Theses, Dissertations & Projects

Background: It is well known that regular physical activity is associated with lower risk of chronic diseases such as diabetes and cardiovascular disease. Physical activity is also considered an important determinant of metabolic syndrome. All levels of metabolic syndrome, diabetes, and cardiovascular disease are thought to involve inflammation. Physical activity may reduce risk, at least in part, by modifying the inflammatory process. Recent studies have demonstrated an inverse relationship between inflammatory markers, such as high sensitivity C-reactive protein (hs-CRP), and physical activity. Elevated hs-CRP appears to be an independent predictor of both CVD and diabetes. Recent evidence also suggests that …

Patterns Of Smoking Behavior Among Physicians In Yerevan, Armenia, Ray M. Merrill, Gordan B. Lindsay, Paul C. Perrin

Faculty Publications

Physicians can play an important role in smoking prevention and control. This study will identify smoking prevalence among physicians in Yerevan, Armenia. It will also explore how the smoking behaviors of physicians, their perceived ability to influence patient smoking behavior, and their knowledge about health outcomes related to smoking influence their interaction with patients. Methods: A cross-sectional, self-administered, anonymous survey was conducted in July, 2004, among 12 healthcare facilities in Yerevan. Analyses are based on responses from 240 physicians, representing a 70% response rate. Results: The percentage of current smokers was significantly higher in men than women (48.5% vs. 12.8% …

Hierarchical Models For Combining Ecological And Case-Control Data, Sebastien Haneuse, Jon Wakefield

UW Biostatistics Working Paper Series

The ecological study design suffers from a broad range of biases that result from the loss of information regarding the joint distribution of individual-level outcomes, exposures and confounders. The consequent non-identifiability of individual-level models cannot be overcome without additional information; we combine ecological data with a sample of individual-level case-control data. The focus of this paper is hierarchical models to account for between-group heterogeneity. Estimation and inference pose serious compu- tational challenges. We present a Bayesian implementation, based on a data augmentation scheme where the unobserved data are treated as auxiliary variables. The methods are illustrated with a dataset of …

Feasibility Of Gdaha Hospitals Meeting The Surge Capacity And Capability Requirements Of An Avian Flu Pandemic In The Miami Valley, Raymond P. Ten Eyck

Master of Public Health Program Student Publications

Hospital surge capacity is a crucial portion of disaster preparedness planning within a community. The demands generated by a disaster require additional capacity, in the form of beds, equipment, personnel, and special capabilities. The scope and urgency of these requirements must be balanced with a practical approach addressing cost and space concerns. The advent of new infectious disease threats, particularly an avian flu pandemic, have reinforced the need to be prepared for a prolonged surge, lasting six to eight weeks, in addition to the shorter duration surges required for industrial accidents, tornados, chemical disasters and terrorists. Using a standardized data …

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Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

Notices

Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

Jefferson Alumnus Dr. John P. Whitecar Designates His Annual Donation To The Department Of Health Policy

Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

A Medical Student's Experience In The Dean's Summer Research Program, Eric Moskowiz

Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

Department Of Health Policy Fellowship Programs: A Tradition Of Excellence, Laura Pizzi

Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

New Publications From The Department Of Health Policy

Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

Jefferson College Of Health Professions Conducts Second E-Health Promotion Summer Institute, Kevin J. Lyons, Kathy Swenson-Miller, Diane Cornman-Levy

Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

Consumer Driven Health Plans: Wave Of The Future?, Sara L. Thier

Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

Letter To The Editor: Putting Issues In Context, Gerald Miller

Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

Letter To The Editor: Quality And Reporting, Michael P. Kern

Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

Letter To The Editor: Pennsylvania Health Care Cost Containment Council Report On Total Hip And Knee Replacements, Marc P. Volavka

Population Health Matters (Formerly Health Policy Newsletter)

No abstract available.

Hospital Quality Report Cards: Ready For Prime Time?, Susan Wynne, Richard Wells

Population Health Matters (Formerly Health Policy Newsletter)

No abstract provided.

A Blink In Healthcare, David B, Nash

Population Health Matters (Formerly Health Policy Newsletter)

No abstract provided.

Aha/Acc Guidelines For Secondary Prevention For Patients With Coronary And Other Atherosclerotic Vascular Disease: 2006 Update, Sidney C. Smith Jr., Jerilyn Allen, Steven N. Blair, Robert O. Bonow, Lawrence M. Brass, Gregg C. Fonarow, Scott M. Grundy, Loren Hiratzka, Daniel Jones, Harlan M. Krumholz, Lori Mosca, Richard C. Pasternak, Thomas A. Pearson, Marc A. Pfeffer, Kathryn A. Taubert

Faculty Publications

No abstract provided.

Disease Mapping And Spatial Regression With Count Data, Jon Wakefield

UW Biostatistics Working Paper Series

In this paper we provide critical reviews of methods suggested for the analysis of aggregate count data in the context of disease mapping and spatial regression. We introduce a new method for picking prior distributions, and propose a number of refinements of previously-used models. We also consider ecological bias, mutual standardization, and choice of both spatial model and prior specification. We analyze male lip cancer incidence data collected in Scotland over the period 1975–1980, and outline a number of problems with previous analyses of these data. A number of recommendations are provided. In disease mapping studies, hierarchical models can provide …

Évaluation De La Qualité De L'Air Dans Les Porcheries Équipées D'Un Système De Séparation Liquide-Solide Des Déjections, Jacques Lavoie, Yves Beaudet, Claude Létourneau, Stéphane Godbout, Stéphane Lemay, Martin Belzile, Isabelle Lachance, François Pouliot

Rapports de recherche scientifique

L’une des recommandations de la Consultation publique sur le développement durable de la production porcine au Québec tenue en 2002-2003 était de développer des nouveaux types de gestion du lisier porcin. Ce défi comprend une réduction importante des différentes émissions de gaz et d’odeurs ainsi que la gestion agroenvironnementale du phosphore et de l’azote. La revue de littérature indique clairement que la séparation sous les animaux ainsi que le retrait rapide des déjections des bâtiments d’élevage est une solution performante permettant de relever ce défi. En plus d’atteindre une efficacité de séparation du phosphore de 80 %, le …

Knowledge, Attitude And Misconceptions Regarding Tuberculosis In Pakistani Patients, Javaid Ahmed Khan, Muhammad Irfan, Amna Zaki, Madiha Beg, Syed Fayyaz Hussain, Nadeem Rizvi

Section of Pulmonary & Critical Care

Objective:

To assess knowledge of patients with tuberculosis; about their disease and misconceptions regarding TB.

Methods:

A cross sectional study was conducted at Out-patient clinics of two teaching hospitals (private and public) in Karachi, Pakistan. A questionnaire was filled for the purpose.

Results:

A total of 170 patients were interviewed, 112 from private and 58 from a public sector hospital. Cough, fever, bloody sputum and chest pain were recognized as the common symptoms of TB. Eleven (7%) patients thought TB was not an infectious disease and 18 (10.6%) did not consider it a preventable disease. Contaminated food was considered the …

Download Full Pdf Issue Of Thomas Jefferson University Mph Public Health Link, Vol. 2, Iss.4, May 2006

Public Health Link

Vol. 2, Iss. 4 of Public Health Link newsletter includes a summary of the retreat to the Franklin Institute, SAPHE's public health week award luncheon and thesis presenters.

Passenger Dies When Semi-Truck Trailer Hits Cow In Roadway, Kentucky Injury Prevention And Research Center

Fatality Case Reports--Motor Vehicle

On November 8, 2005, a 26-year-old male laborer who was a passenger in a semi-truck died when the driver swerved to avoid hitting a cow that was standing in the parkway lane. The two employees had been traveling westbound for approximately one hour when the driver noticed a cow in his lane. He swerved to avoid hitting the cow but hit it anyway. The tractor and two trailers jack-knifed, traveled through the median with the cab and trailers flipped onto their right sides, slid across the eastbound lanes, then the cab slammed through the guardrail. The cab came to rest …