Physical Sciences and Mathematics Commons^™

Hierarchical Vector Auto-Regressive Models And Their Applications To Multi-Subject Effective Connectivity, Cristina Gorrostieta, Mark Fiecas, Hernando Ombao, Erin Burke, Steven Cramer

Mark Fiecas

Active Presecription Drug Safety Surveillance: Exploring Omop 2011-2012 Experiments, Susan Gruber, James M. Robins

Susan Gruber

The Observational Medical Outcomes Partnership (OMOP), a consortium of pharmaceutical, FDA, and academic researchers focuses on developing and evaluating electronic records-based methods for enhancing post-market drug safety surveillance. The OMOP 2011-2012 experiment consists of applying variants of seven analysis methods to five different EMR or claims databases to estimate the increase (decrease) in risk associated with drug-outcome pairs whose causal association has been previously established, and serves as a gold standard for comparison. Variants of each method can produce very different effect estimates, sometimes at odds with the gold standard. We explore the reasons behind this heterogeneity, and in doing …

Critical Assessment Of Outcomes In Acute Aortic Dissection (Type A) At A Community Hospital: A 10 Year Review, Tim S. Misselbeck Md, James K. Wu Md, Stephen Deturk Ba, Michael F. Szwerc Md, Sanjay M. Mehta Md, Theodore G. Phillips Md, Gary W. Szydlowski Md, Raymond L. Singer Md

James K. Wu, M.D.

No abstract provided.

Conventional Isolated Aortic Valve Replacement In Octogenarians: A 10-Year Single Center Experience, James K. Wu Md, Justin D. Roberts Do, Gregory S. Troutman Bs, Michael J. Weiss Mph, Sanjay M. Mehta Md, Theodore G. Phillips Md, Michael F. Szwerc Md, Gary W. Szydlowski Md, Tim S. Misselbeck Md, Raymond L. Singer Md

James K. Wu, M.D.

No abstract provided.

Critical Assessment Of Outcomes In Acute Aortic Dissection (Type A) At A Community Hospital: A 10 Year Review, Tim S. Misselbeck Md, James K. Wu Md, Stephen Deturk Ba, Michael F. Szwerc Md, Sanjay M. Mehta Md, Theodore G. Phillips Md, Gary W. Szydlowski Md, Raymond L. Singer Md

James K Wu MD

No abstract provided.

Conventional Isolated Aortic Valve Replacement In Octogenarians: A 10-Year Single Center Experience, James K. Wu Md, Justin D. Roberts Do, Gregory S. Troutman Bs, Michael J. Weiss Mph, Sanjay M. Mehta Md, Theodore G. Phillips Md, Michael F. Szwerc Md, Gary W. Szydlowski Md, Tim S. Misselbeck Md, Raymond L. Singer Md

James K Wu MD

No abstract provided.

Causes Of Death In Surgically Treated Patients With Type A Aortic Dissection - A Ten Year Review, James K. Wu Md, Eilizabeth Depaolo Bs, Theodore G. Phillips Md, Tim S. Misselbeck Md

James K. Wu, M.D.

No abstract provided.

Designing The Search Trial: Ph250b In Practice, Laura Balzer

Laura B. Balzer

No abstract provided.

The Challenge Of Early Inpatient Postpartum Depression Screening, Elizabeth A. Berger Do, John C. Smulian Md, Mph, Joanne Quiñones Md, Msce, Rory L. Marraccini Md, Amy Wu Bs, Elizabeth A. Smulian Bs, Sandra L. Curet Md

John C Smulian MD, MPH

No abstract provided.

Participation In Perinatal Interventional Research: Which Characteristics Matter?, Hai-Yen T. Nguyen Md, Joanne Quiñones Md, Msce, Daniel G. Kiefer Md, Anita Kurt Phd, Rn, Felisa Saldutti, John C. Smulian Md, Mph

John C Smulian MD, MPH

No abstract provided.

Near-Unity Nuclear Polarization With An Open-Source 129xe Hyperpolarizer For Nmr And Mri, Panayiotis Nikolaou, Aaron M. Coffey, Laura L. Walkup, Brogan M. Gust, Nicholas Whiting, Hayley Newton, Scott Barcus, Iga Muradyan, Mikayel Dabaghyan, Gregory D. Moroz, Matthew S. Rosen, Samuel Patz, Michael J. Barlow, Eduard Y. Chekmenev, Boyd M. Goodson

Nicholas Whiting

Natural History Of Concentric Left Ventricular Geometry In Community-Dwelling Older Adults Without Heart Failure During Seven Years Of Follow-Up, Ravi Desai, Mustafa Ahmed, Marjan Mujib, Inmaculada Aban, Michael Zile, Ali Ahmed

Ravi V Desai MD

No abstract provided.

Absence Of Obesity Paradox In Patients With Chronic Heart Failure And Diabetes Mellitus: A Propensity-Matched Study, Chris Adamopoulos, Philippe Meyer, Ravi Desai, Kyparissi Karatzidou, Fernando Ovalle, Michel White, Inmaculada Aban, Thomas Love, Prakash Deedwania, Stefan Anker, Ali Ahmed

Ravi V Desai MD

No abstract provided.

Relation Of Baseline Systolic Blood Pressure And Long-Term Outcomes In Ambulatory Patients With Chronic Mild To Moderate Heart Failure, Maciej Banach, Vikas Bhatia, Margaret Feller, Marjan Mujib, Ravi Desai, Mustafa Ahmed, Jason Guichard, Inmaculada Aban, Thomas Love, Wilbert Aronow, Michel White, Prakash Deedwania, Gregg Fonarow, Ali Ahmed

Ravi V Desai MD

No abstract provided.

Warfarin Use And Outcomes In Patients With Advanced Chronic Systolic Heart Failure Without Atrial Fibrillation, Prior Thromboembolic Events, Or Prosthetic Valves, Marjan Mujib, Abu-Ahmed Rahman, Ravi Desai, Mustafa Ahmed, Margaret Feller, Inmaculada Aban, Tomas Love, Michel White, Prakash Deedwania, Wilbert Aronow, Gregg Fonarow, Ali Ahmed

Ravi V Desai MD

No abstract provided.

Influence Of Co-Existing Atrial Fibrillation On The Efficacy Of Atorvastatin Treatment In Patients With Dilated Cardiomyopathy: A Pilot Study, Agata Bielecka-Dabrowa, Jan Goch, Jacek Rysz, Marek Maciejewski, Ravi Desai, Wilbert Aronow

Ravi V Desai MD

No abstract provided.

Rheumatic Heart Disease And Risk Of Incident Heart Failure Among Community-Dwelling Older Adults: A Prospective Cohort Study, Marjan Mujib, Ravi Desai, Mustafa Ahmed, Jason Guichard, Margaret Feller, O Ekundayo, Prakash Deedwania, Mahboob Ali, Inmaculada Aban, Thomas Love, Michel White, Wilbert Aronow, Shahbudin Rahimtoola, Robert Bonow, Ali Ahmed

Ravi V Desai MD

No abstract provided.

Relationship Between Left And Right Ventricular Ejection Fractions In Chronic Advanced Systolic Heart Failure: Insights From The Best Trial, Ravi Desai, Philippe Meyer, Mustafa Ahmed, Marjan Mujib, Chris Adamopoulos, Michel White, Inmaculada Aban, Ami Iskandrian, Ali Ahmed

Ravi V Desai MD

No abstract provided.

Design And Rationale Of Studies Of Neurohormonal Blockade And Outcomes In Diastolic Heart Failure Using Optimize-Hf Registry Linked To Medicare Data, Yan Zhang, Meredith Kilgore, Tarun Arora, Marjan Mujib, O. Ekundayo, Inmaculada Aban, Margaret Feller, Ravi Desai, Thomas Love, Richard Allman, Gregg Fonarow, Ali Ahmed

Ravi V Desai MD

No abstract provided.

A Propensity-Matched Study Of The Association Of Diabetes Mellitus With Incident Heart Failure And Mortality Among Community-Dwelling Older Adults, Brita Roy, Pushkar Pawar, Ravi Desai, Gregg Fonarow, Marjan Mujib, Yan Zhang, Margaret Feller, Fernando Ovalle, Inmaculada Aban, Thomas Love, Ami Iskandrian, Prakash Deedwania, Ali Ahmed

Ravi V Desai MD

No abstract provided.

Heart Failure Is A Risk Factor For Incident Driving Cessation Among Community-Dwelling Older Adults: Findings From A Prospective Population Study, Richard Sims, Marjan Mujib, Gerald Mcgwin, Yan Zhang, Mustafa Ahmed, Ravi Desai, Inmaculada Aban, Patrick Sawyer, Stefan Anker, Ali Ahmed

Ravi V Desai MD

No abstract provided.

Managed Care, Hospice Use, Site Of Death, And Medical Expenditures In The Last Year Of Life, Ezekiel Emanuel, Arlene Ash, Wei Yu, Gail Gazelle, Norman Levinsky, Olga Saynina, Mark Mcclellan, Mark Moskowitz

wei yu

BACKGROUND: We examined deaths of Medicare beneficiaries in Massachusetts and California to evaluate the effect of managed care on the use of hospice and site of death and to determine how hospice affects the expenditures for the last year of life.

METHODS: Medicare data for beneficiaries in Massachusetts (n = 37 933) and California (n = 27 685) who died in 1996 were merged with each state's death certificate files to determine site and cause of death. Expenditure data were Health Care Financing Administration payments and were divided into 30-day periods from the date of death back 12 months.

RESULTS: …

The Collaboration Particle; Applying The Formalism Of Quantum Theory To Cognition., Kelsey E. Landis, Hontas F. Farmer

Hontas F Farmer

We propose that collaboration between two people can be thought of as a quantum cognitive process wherein the relevant reality to be comprehended is an idea being communicated from one person to the other. Through a combination of writing center pedagogy and quantum theory, supported by mathematical evidence, we assert that collaboration can be effectively and equally established in both face-to-face and online writing tutoring sessions through conscious, active meditation to harness what can be thought of as a particle. Included is an analysis of writing center scholarship to show how collaboration is traditionally considered in a writing center context, …

Estimating The Effect Of A Community-Based Intervention With Two Communities, Mark Van Der Laan, Maya Petersen, Wenjing Zheng

Wenjing Zheng

Due to the need to evaluate the effectiveness of community-based programs in practice, there is substantial interest in methods to estimate the causal effects of community-level treatments or exposures on individual level outcomes. The challenge one is confronted with is that different communities have different environmental factors affecting the individual outcomes, and all individuals in a community share the same environment and intervention. In practice, data are often available from only a small number of communities, making it difficult if not impossible to adjust for these environmental confounders. In this paper we consider an extreme version of this dilemma, in …

Microbes In Pool Filter Backwash As Evidence Of The Need For Improved Swimmer Hygiene — Metro-Atlanta, Georgia, 2012, Christopher Hutcheson, Ryan Cira, Stanley L. Gaines, Kevin R. Jones, Walter Howard, David Hornsby, Maurice Redmond, R. Christopher Rustin, Michele C. Hlavsa, Jennifer L. Murphy, Jothikumar Narayanan, Candace D. Miller, Brittany Cantrell, Vincent R. Hill, Michael J. Beach

R. Christopher Rustin

Estimating Effects On Rare Outcomes: Knowledge Is Power, Laura B. Balzer, Mark J. Van Der Laan

Laura B. Balzer

Many of the secondary outcomes in observational studies and randomized trials are rare. Methods for estimating causal effects and associations with rare outcomes, however, are limited, and this represents a missed opportunity for investigation. In this article, we construct a new targeted minimum loss-based estimator (TMLE) for the effect of an exposure or treatment on a rare outcome. We focus on the causal risk difference and statistical models incorporating bounds on the conditional risk of the outcome, given the exposure and covariates. By construction, the proposed estimator constrains the predicted outcomes to respect this model knowledge. Theoretically, this bounding provides …

Compliance With The Centers For Disease Control And Prevention Recommendations For The Diagnosis And Treatment Of Sexually Transmitted Diseases, Bryan Kane, Linda Degutis, Helen Sayward, Gail D'Onofrio

Bryan G Kane MD

No abstract provided.

Rethinking Classroom Participation, Rita Gardiner

Rita A Gardiner

Within the classroom, feelings of alienation can adversely affect students’ ability to speak, and thus serve to reproduce social inequities. This is especially the case with some first year students who may not have had many opportunities to speak, as well as students from different cultures where talking in class may not be the norm. To help mitigate power imbalances, it is necessary to develop a diversity of teaching practices and approaches to learning to ensure that each student feels that her class participation counts. In this workshop, I want to consider ways in which it is possible to encourage …

Evaluation Of Student Outcomes In Online Vs. Campus Biostatistics Education In A Graduate School Of Public Health, John Mcgready, Ron Brookmeyer

Ron Brookmeyer

Objective: To compare student outcomes between concurrent online and on-campus sections of an introductory biostatistics course offered at a U.S. school of public health in 2005. Methods: Enrolled students (95 online, 92 on-campus) were invited to participate in a confidential online survey. The course outcomes were compared between the two sections adjusting for differences in student characteristics. Results: Seventy-two online (76%) and 66 (72%) on-campus enrollees participated. Unadjusted final exam scores for the online and on-campus sections were respectively 85.1 and 86.3 (p = 0.50) in term 1, and 87.7 and 86.9 (p=0.58) in term 2. After adjustment for student …

A Qualitative Review Of Differential Diagnosis Generators, William Bond Md, Ms, Linda M. Schwartz Mde, Ahip, Cm, Kevin R. Weaver Do, Donald Levick Md, Mba, Michael Guliano Md, Med, Mhpe, Mark L. Graber Md

Linda Matula Schwartz MDE, AHIP, CM

No abstract provided.