I am an attending biostatistician at Memorial Sloan-Kettering Center and a fellow of
the American Statistical Association. I am an associate editor of Clinical Trials:
Journal of the SCT and a co-director of the ASCO/AACR Methods in Clinical Research
Workshop.

Clinical Trials

PDF

Assessing noninferiority in a three-arm trial using the Bayesian Approach (with Pulak Ghosh, Farouk S. Nathoo, and Ram C. Tiwari), Memorial Sloan-Kettering Cancer Center, Dept. of Epidemiology & Biostatistics Working Paper Series (2010)
 

Link

Planning a dose-response study with subject-specific doses, Statistics in Medicine (2005)
 

PDF

Computing the Total Sample Size When Group Sizes Are Not Fixed, Memorial Sloan-Kettering Cancer Center Department of Epidemiology and Biostatistics Working Paper Series (2005)
 

Link

A Bayesian look at enrolling additional patients at the maximum tolerated dose in phase I trials, Contemporary Clinical Trials (2005)
 

Link

Sample size and power for McNemar’s test with clustered data, Statistics in Medicine (2004)
 

View More »

General Biostatistics

PDF

A Hybrid Bayesian Laplacian Approach for Generalized Linear Mixed Models (with Marinela Capanu and Colin B. Begg), Memorial Sloan-Kettering Cancer Center, Dept. of Epidemiology & Biostatistics Working Paper Series (2011)
 

Statistical Theory and Methods

Link

The Bayesian two-sample t-test (with Wesley O. Johnson, Yonggang Lu, and Peter H. Westfall), The American Statistician (2005)
 

Link

The limiting density of unit-root test statistics: unknown mean, dependent errors (with Madan Puri, Frits Ruymgaart, and Martin van Zuijlen), Journal of Time Series Analysis (2000)
 

Bayesian methods

PDF

Semiparametric Bayesian Modeling of Multivariate Average Bioequivalence (with Pulak Ghosh Dr.), Statistics in Medicine (2007)
 

Link

A Bayesian look at enrolling additional patients at the maximum tolerated dose in phase I trials, Contemporary Clinical Trials (2005)
 

Link

The Bayesian two-sample t-test (with Wesley O. Johnson, Yonggang Lu, and Peter H. Westfall), The American Statistician (2005)
 

Link

Bayesian multiple testing for two-sample multivariate endpoints. (with Peter Westfall and Wesley Johnson), Biometrics (2003)
 
Bayes factors for variance components in the mixed linear model, ETD Collection for Texas Tech University (1996)
 

Survival Analysis

PDF

Building a Nomogram for Survey-Weighted Cox Models Using R (with Marinela Capanu), Memorial Sloan-Kettering Cancer Center, Dept. of Epidemiology & Biostatistics Working Paper Series (2011)
 

PDF

Optimal Cutpoint Estimation with Censored Data (with Camelia Sima), Memorial Sloan-Kettering Cancer Center, Dept. of Epidemiology & Biostatistics Working Paper Series (2008)
 

Link

Concordance Probability and Discriminatory Power in Proportional Hazards Regression (with Glenn Heller), Biometrika (2005)
 

ROC Curves

PDF

Mixtures of Receiver Operating Characteristic Curves, Academic Radiology (2013)
 

PDF

Comparing ROC Curves Derived From Regression Models (with Venkatraman E. Seshan and Colin B. Begg), Memorial Sloan-Kettering Cancer Center, Dept. of Epidemiology & Biostatistics Working Paper Series (2011)
 

Link

Analyzing Receiver Operating Characteristic Curves Using SAS (2007)
 

PDF

Lehmann Family of ROC Curves (with Glenn Heller), Under review (2007)
 

Link

Software for "Analyzing Receiver Operating Characteristic Curves Using SAS" (2007)
 

View More »

Cancer Staging and Prognosis

PDF

A Systematic Selection Method for the Development of Cancer Staging Systems (with Yunzhi Lin and Richard Chappell), Memorial Sloan-Kettering Cancer Center, Dept. of Epidemiology & Biostatistics Working Paper Series (2012)
 

Software

PDF

WinBUGS Code for Semiparametric Bayesian Modeling of Multivariate Average Bioequivalence (2007)
 

No subject area

PDF

Bland-Altman Plots for Evaluating Agreement Between Solid Tumor Measurements (with Chaya S. Moskowitz), Memorial Sloan-Kettering Cancer Center, Dept. of Epidemiology & Biostatistics Working Paper Series (2011)