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Biostatistics Seminars

Department of Biostatistics Seminar Series


The Department of Biostatistics presents a regular speaker series each semester, generally on Thursday afternoon each week. Diverse experts lecture on their work in biostatistics.

Upcoming Biostats Seminars

Biostatistics Seminar Series

Nonparametric Procedures for Testing Order Among Multivariate Distributions - Shyamal D. Peddada

Thursday 2/15 3:30PM - 4:30PM
Public Health Auditorium (G23)

Shyamal D. Peddada, PhD, Professor & Chair, Department of Biostatistics, will present, "Nonparametric procedures for testing order among multivariate distributions."

Comparison of two or more ordered experimental groups on the basis of multivariate data is a common problem of interest in a wide range of applications such as in economics, finance, toxicology, clinical trials, etc.  Marginally, not only are the data not normally distributed, the shape of the distribution may even change with population (or experimental groups).  Thus the data are not likely to be multivariate normally distributed. Secondly, from an application point of view, often researchers are not only interested in determining whether the experimental groups are different from each other but whether they are “ordered” (in some sense) in the response vector.  Since the shape of the distribution may change over the experimental groups, it may not be sufficient or even meaningful to compare the mean vectors.  For example, even though the population means are identical the probability distributions could be very different. Consequently, standard multivariate methods such as the multivariate analysis of variance (MANOVA) may not suitable.   In this talk we describe some notions of stochastic ordering of multivariate random vectors and develop methodologies for testing such orders.  Resulting methodologies are illustrated using some examples from toxicology.  Time permitting, we shall discuss multivariate tests for the case of nearly singular distributions that can occur due to high dimensionality.  

Last Updated On Monday, February 12, 2018 by Temp, GSPH Marketing & Development
Created On Tuesday, February 06, 2018

Previous Biostats Seminars

Thu 9/20/2018
Biostatistics at the FDA - Jessica (Jeongsook) Kim, FDA Biostatistics Seminar Series
Biostatistics at the FDA - Jessica (Jeongsook) Kim, FDA
Thu 9/20/2018 3:30PM - 4:30PM
Public Health Auditorium (G23)

Jessica Kim, Lead Mathematical Statistician, Food and Drug Administration, will present, “Biostatistics at the FDA”.
Thu 9/6/2018
Joint Modeling of Multiple Time-to-Event Outcomes - Shanshan Zhao, NIH/NIEHS Biostatistics Seminar Series
Joint Modeling of Multiple Time-to-Event Outcomes - Shanshan Zhao, NIH/NIEHS
Thu 9/6/2018 3:30PM - 4:30PM
Public Health Auditorium (G23)

This talk will focus on some recent development in this area, including a nonparametric and a semiparametric approach of estimating the joint survival function. These proposed methods have the ability to explore and estimate dependency between event times as well as to understand the relationship between dependency and risk factors. Simulation evaluations as well as an application to the Women’s Health Initiative’s hormone therapy trial will be presented.
Thu 6/14/2018
Biostatistics Seminar: Jenna Carlson, University of Pittsburgh Biostatistics Seminar Series
Biostatistics Seminar: Jenna Carlson, University of Pittsburgh
Thu 6/14/2018 3:00PM - 4:00PM
1149 Public Health, Foster Conference Room

Biostatistics guest speaker, Jenna Carlson, University of Pittsburgh, will present, "Population-Specific Reference Panels and Genetic Association Studies in Sāmoans."
Tue 5/29/2018
Biostatistics Seminar: Zeda Li, City University of New York Biostatistics Seminar Series
Biostatistics Seminar: Zeda Li, City University of New York
Tue 5/29/2018 2:00PM - 3:00PM
1149 Public Health, Foster Conference Room

Zeda Li, Paul H. Chook Department of Information Systems and Statistics, City University of New York, will present, “Adaptive Bayesian Time-Frequency Analysis of Multivariate Time Series”.

Thu 4/19/2018
Dynamic functional clustering with applications to the MAPP Study-Wensheng Guo-UPenn Biostatistics Seminar Series
Dynamic functional clustering with applications to the MAPP Study-Wensheng Guo-UPenn
Thu 4/19/2018 3:30PM - 4:30PM
Public Health Lecture Hall (A115)

Biostatistics guest speaker, Wensheng Guo, University of Pennsylvania, will present, "Dynamic functional clustering with applications to Multidisciplinary Approach to the Study of Chronic Pelvic Pain (MAPP) study."
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Contact

For information on seminars and events in the department, contact:

Bernadette Kapko
bkapko@pitt.edu
412-624-3022

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