Medicine and Health Sciences Commons^™

Computational Analysis Of The Sir Mathematical Model For The Dengue Fever, Joseph Phillip Diaz

Theses and Dissertations

Dengue fever is a disease affecting people in more than 100 countries. Here we consider a host and vector model for the transmission of dengue fever. This SIR model consists of three compartments of susceptible, infective and removed for host (human) and two compartments of susceptible and infective for vector (dengue mosquitos). These five compartments yield five coupled nonlinear ordinary differential equations (ODEs). After non-dimensionalization, we have a system of three nonlinear ODEs. Reproductive number and two equilibrium points are calculated for various cases. Simulation is carried out for susceptible, infective and removed and the results are presented in graphical …

Depression, Obesity, And Metabolic Syndrome: Prevalence And Risks Of Comorbidity In A Population-Based Study Of Mexican Americans, Rene L. Olvera, Douglas E. Williamson, Susan P. Fisher-Hoch, Kristina Vatcheva, Joseph B. Mccormick

School of Mathematical and Statistical Sciences Faculty Publications and Presentations

Introduction: We examined the prevalence of depression, obesity, and metabolic syndrome and associations between them in a population-based representative cohort of Mexican Americans living on the United States-Mexico border.

Method: The sample in this cross-sectional analysis consisted of 1,768 Mexican American adults (≥ 18 years of age) assessed between the years 2004 and 2010, with whom we tested our central hypothesis of a significant relationship between obesity and depression. Depression was measured using the Center for Epidemiologic Studies-Depression scale (CES-D) with a cutoff score of ≥ 16 for depression and a cutoff score of ≥ 27 for severe depression. We …

Modification Of Traffic-Related Respiratory Response By Asthma Control In A Population Of Car Commuters, Maria C. Mirabelli, Rachel Golan, Roby Greenwald, Amit U. Raysoni, Fernando Holguin, Priya Kewada, Andrea Winquist, W Dana Flanders, Jeremy A. Sarnat

School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations

Background: Effects of traffic-related exposures on respiratory health are well documented, but little information is available about whether asthma control influences individual susceptibility. We analyzed data from the Atlanta Commuter Exposure study to evaluate modification of associations between rush-hour commuting, in- vehicle air pollution, and selected respiratory health outcomes by asthma control status.

Methods: Between 2009 and 2011, 39 adults participated in Atlanta Commuter Exposure, and each conducted two scripted rush-hour highway commutes. In-vehicle particulate components were measured during all commutes. Among adults with asthma, we evaluated asthma control by questionnaire and spirometry. Exhaled nitric oxide, forced expiratory volume in …

Does Maternal Asthma Contribute To Racial/Ethnic Disparities In Obstetric And Neonatal Complications?, Katrina F. Flores, Candace Robledo, Beom Seuk Hwang, Kira Leishear, Katherine Grantz, Pauline Mendola

School of Medicine Publications and Presentations

Purpose

Examine whether maternal asthma contributes to racial/ethnic differences in obstetric and neonatal complications.

Methods

Data on White (n=110,603), Black (n=50,284) and Hispanic (n=38,831) singleton deliveries came from the Consortium on Safe Labor. Multi-level logistic regression models, with an interaction term for asthma and race/ethnicity, estimated within-group adjusted odds ratios (aOR) for gestational diabetes, gestational hypertension, preeclampsia, placental abruption, premature rupture of membranes, preterm delivery, maternal hemorrhage, NICU admissions, small for gestational age (SGA), apnea, respiratory distress syndrome, transient tachypnea of the newborn, anemia and hyperbilirubinemia after adjustment for clinical and demographic confounders. Non-asthmatics of the same racial/ethnic group were …

Environmental Justice And Community-Based Participatory Research In Texas Borderland Colonias, Adelita G. Cantu, Margaret A. Graham, Ann V. Millard, Isidore Flores, Meaghan K. Mugleston, Iris Y. Reyes, Ester C. Carbajal

Anthropology Faculty Publications and Presentations

Objective

An innovative academic-community partnership studied daily decisions in communities of mostly Spanish-speaking, low-income residents of colonias in Hidalgo County, TX, about risk of exposure to fish contaminated by PCBs at an Environment Protection Agency (EPA) Superfund site.

Design and Sample

The team used focus group interviews with colonia residents and content analysis to assess knowledge of risk related to the Superfund site, the Donna Reservoir and Canal System.

Results

(1) many lacked knowledge of the Superfund site contamination; (2) a few participants fished at the lake, knew people who did so, and consumed the catch, but most participants feared …

Preconception And Early Pregnancy Air Pollution Exposures And Risk Of Gestational Diabetes Mellitus, Candace Robledo, Pauline Mendola, Edwina H. Yeung, Tuija Männistö, Rajeshwari Sundaram, Danping Liu, Qi Ying, Seth Sherman, Katherine Grantz

School of Medicine Publications and Presentations

Background: Air pollution has been linked to gestational diabetes mellitus (GDM) but no studies have evaluated impact of preconception and early pregnancy air pollution exposures on GDM risk.

Methods: Electronic medical records provided data on 219,952 singleton deliveries to mothers with (n=11,334) and without GDM (n=208,618). Average maternal exposures to particulate matter (PM) ≤ 2.5μm (PM2.5) and PM2.5 constituents, PM ≤ 10μm (PM10), nitrogen oxides (NOx), carbon monoxide, sulfur dioxide (SO2) and ozone (O3) were estimated for the 3-month preconception window, first trimester, and gestational weeks 1-24 based on modified Community Multiscale Air Quality models for delivery hospital referral regions. …