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Biostatistics Dissertation Defenses

Biostatistics Dissertations

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Events that appear on this page are in the Sponsoring Department of "Biostatistics" with "Dissertation Defenses" as its Category.

To add or edit events on this page, go to http://publichealth.pitt.edu/submit

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Biostatistics Dissertation Defense

Yongli Shuai: Multinomial Logistic Regression and Prediction Accuracy for Interval-Censored...

Friday 12/8 11:30AM - 1:30PM
Public Health 7139, Peterson Seminar Room

Yongli Shuai of the Department of Biostatistics defends his dissertation on "Multinomial Logistic Regression and Prediction Accuracy for Interval-Censored Competing Risks Data".

Graduate faculty of the University and all other interested parties are invited to attend


ABSTRACT:

Interval-censored competing risks data are ubiquitous in biomedical research fields. The direct parametric modeling of the cumulative incidence functional (CIF) is appealing due to its intuitive probability interpretation and easy implementation. This dissertation is to study and extend the multinomial logistic regression (MLR) model to interval-censored competing risks data. The MLR model naturally guarantees the additivity property of the event-specific probabilities under competing risks. A cubic B-Spline-based sieve method is then adopted to add flexibility into the proposed MLR model. The second study objective is to develop the prediction error (PE) as a model-free metric to evaluate and validate the prediction accuracy for interval censored competing risks data. Adopting the method of the pseudo-value estimator, this dissertation work proposes a novel approach to estimate the PE under the interval censored competing risks setting. Simulation studies are presented to assess performance of the MLR model and the PE in different scenarios. The proposed methods were then applied to a community-based study of cognitive impairment in aging population.

Public Health Significance: Interval-censored competing risks data could be often encountered in biomedical research that is essential for public health, such as rehabilitation and pain medicine. The proposed methods provide precise yet flexible modeling of such data with straightforward interpretation on how predictors affect the CIF, as well as useful tools to evaluate and validate the prediction accuracy of the developed models.

 

Last Updated On Monday, April 09, 2018 by Valenti, Renee Nerozzi
Created On Tuesday, November 07, 2017

Previous

Biostatistics Dissertation Defense
Tianzhou Ma: Differential Expression and Feature Selection in the Analysis of Multiple Omics Studies Biostatistics Dissertation Defense
Tianzhou Ma: Differential Expression and Feature Selection in the Analysis of Multiple Omics Studies
Fri 3/2/2018 2:00PM - 4:00PM
Public Health 7139, Peterson Seminar Room

Tianzhou "Charles" Ma of the Department of Biostatistics defends his dissertation on "Differential Expression and Feature Selection in the Analysis of Multiple Omics Studies". 

Biostatistics Dissertation Defense
Yongli Shuai: Multinomial Logistic Regression and Prediction Accuracy for Interval-Censored... Biostatistics Dissertation Defense
Yongli Shuai: Multinomial Logistic Regression and Prediction Accuracy for Interval-Censored...
Fri 12/8/2017 11:30AM - 1:30PM
Public Health 7139, Peterson Seminar Room

Yongli Shuai of the Department of Biostatistics defends his dissertation on "Multinomial Logistic Regression and Prediction Accuracy for Interval-Censored Competing Risks Data".


Biostatistics Dissertation Defense
Song Zhang: Diagnostic Accuracy Analysis for Ordinal Competing Risks Outcomes Using ROC Surface Biostatistics Dissertation Defense
Song Zhang: Diagnostic Accuracy Analysis for Ordinal Competing Risks Outcomes Using ROC Surface
Wed 12/6/2017 12:00PM - 2:00PM
Public Health 7139, Peterson Seminar Room

Song Zhang of the Department of Biostatistics defends her dissertation on "Diagnostic Accuracy Analysis for Ordinal Competing Risks Outcomes Using ROC Surface".


Biostatistics Dissertation Defense
Zhaowen Sun: Power and Sample Size Determinations in Dynamic Risk Prediction Biostatistics Dissertation Defense
Zhaowen Sun: Power and Sample Size Determinations in Dynamic Risk Prediction
Tue 8/8/2017 10:00AM - 12:00PM
Public Health 7139, Peterson Seminar Room

Zhaowen Sun of the Department of Biostatistics defends her dissertation on "Power and Sample Size Determinations in Dynamic Risk Prediction".


Biostatistics Dissertation Defense
Yi Liu: Novel Test Procedures for Large-scale Bivariate Time-to-event Data on Single and... Biostatistics Dissertation Defense
Yi Liu: Novel Test Procedures for Large-scale Bivariate Time-to-event Data on Single and...
Fri 7/28/2017 1:00PM - 3:00PM
Public Health 7139, Peterson Seminar Room

Yi Liu of the Department of Biostatistics defends her dissertation on "Novel Test Procedures for Large-scale Bivariate Time-to-event Data on Single and Gene-based Markers, with an Application to a Genetic Study of AMD Progression"


Biostatistics Dissertation Defense
Yimeng Liu: Efficient Estimation of the Quantile Residual Lifetime Using Auxiliary Covariates Biostatistics Dissertation Defense
Yimeng Liu: Efficient Estimation of the Quantile Residual Lifetime Using Auxiliary Covariates
Tue 7/18/2017 10:30AM - 1:00PM
Public Health A522

Alice Liu of the Department of Biostatistics defends her dissertation on "Efficient Estimation of the Quantile Residual Lifetime Using Auxiliary Covariates"

Biostatistics Dissertation Defense
Judah Abberbock: Usage of Surrogate Endpoints in the Design and Analysis of Clinical Trials Biostatistics Dissertation Defense
Judah Abberbock: Usage of Surrogate Endpoints in the Design and Analysis of Clinical Trials
Mon 7/17/2017 2:00PM - 4:00PM
Public Health 7139, Peterson Seminar Room

Judah Abberbock of the Department of Biostatistics defends his dissertation on "Usage of Surrogate Endpoints in the Design and Analysis of Clinical Trials"

Biostatistics Dissertation Defense
Abraham Apfel: "A Stability Analysis of Sparse K-means" Biostatistics Dissertation Defense
Abraham Apfel: "A Stability Analysis of Sparse K-means"
Fri 5/5/2017 9:00AM - 11:00AM
Public Health 7139, Peterson Seminar Room

Abraham Apfel of the Department of Biostatistics defends his dissertation on "A Stability Analysis of Sparse K-means"

Biostatistics Dissertation Defense
Chien-Wei Lin: "Power calculation and study design in RNA-Seq and Methyl-Seq" Biostatistics Dissertation Defense
Chien-Wei Lin: "Power calculation and study design in RNA-Seq and Methyl-Seq"
Fri 4/14/2017 3:00PM - 5:00PM
Public Health 7139, Peterson Seminar Room

Chien-Wei Lin of the Department of Biostatistics defends his dissertation on "Power calculation and study design in RNA-Seq and Methyl-Seq"

Biostatistics Dissertation Defense
Yuvika Paliwal: "Generalized Linear Mixed Models for Analysis of Cross-correlated Binary Data in..." Biostatistics Dissertation Defense
Yuvika Paliwal: "Generalized Linear Mixed Models for Analysis of Cross-correlated Binary Data in..."
Thu 4/13/2017 10:00AM - 12:00PM
Public Health 4140, Young Seminar Room

Yuvika Paliwal of the Department of Biostatistics defends her dissertation on "Generalized Linear Mixed Models for Analysis of Cross-correlated Binary Data in Multi-reader Studies of Diagnostic Imaging"

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Questions and Submissions

The schedule of dissertation defenses in the Department of Biostatistics is maintained by:

Renee Valenti

412-624-3023

Share the details for your defense to ensure it is displayed here as well as on the department calendar, Pitt Public Health's calendar, Weekly Update, and LCD screens.

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