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Faculty Bio - Abdus Wahed, PhD
Associate Professor Personal Webpage: http://www.pitt.edu/~wahed ATSRG Webpage: http://www.biostat.pitt.edu/atsrg/ Education PhD, Statistics, North Carolina State University, 2003. MA, Mathematical Statistics, Ball State University, 2000. MSc, Statistics, University of Dhaka, 1994. BSc (Hons.), Statistics (minor in Mathematics and Economics), University of Dhaka, 1992. Research Interests Design and Analysis of Multi-stage randomization Trials Adaptive Treatment Strategies Dynamic treatment regimes Survival Analysis Causal Inference Missing Data Skew-Symmetric Distributions Viral Hepatitis Bariatric Surgery Click here for complete research details Health Sciences Faculty Research Interests Project Awards
Courses BIOST 2083: Linear Models (Fall 2004) Selected Publications Tang X and Wahed AS. Comparison of treatment regimes with adjustment for auxiliary variables. Journal of Applied Statistics. In Press, 2011. Wahed AS. On the equivalence of inverse-probability-of-censoring-weighted and Kaplan-Meier estimators. Invited Article, Journal of the Applied Statistical Science. Accepted, 2011. Miyahara S and Wahed AS. Weighted Kaplan-Meier estimators for two-stage treatment regimes. Statistics in Medicine. 2010;29:2581-2591. Wahed AS. Inference for two-stage adaptive treatment strategies using mixture distributions. Journal of Royal Statistical Society Series C (Applied Statistics). 2010;59. [Longitudinal Assessment of Bariatric Surgery (LABS) Consortium] Flum D, Belle SH, ..., Wahed AS, et al. Peri-operative safety in the longitudinal assessment of bariatric surgery. New England Journal of Medicine. 361:445-454 July 30, 2009 Number 5. Feng W and Wahed AS. Sample Size for Two-Stage Studies with Maintenance Therapy. Statistics in Medicine. 2009;28:2028-2041. Wahed AS, Luong T and Jeong J-H. A new generalization of Weibull distribution with application to a breast cancer data set. Statistics in Medicine. 2009;28:2077-2094. Wahed AS. Estimation of survival quantiles in two-stage randomization designs, Journal of Statistical Planning and Inference. 2009;139:2064–2075. Feng W and Wahed AS. A supremum log rank test for comparing adaptive treatment strategies and corresponding sample size formula, Biometrika. 2008;95(3):695-707. Ali MM, Woo J, Pal M, Wahed AS. Some skew-symmetric double inverted distributions. International Journal of Statistical Sciences. 2008;7:1-12. Wahed AS. The family of curvi-triangular distributions. International Journal of Statistical Sciences. 2007;6:7-18. Wahed AS and Tsiatis AA. Semi-parametric efficient estimation of the survival distribution for treatment policies in two-stage randomization designs in clinical trials with censored data. Biometrika 2006;93:147-161. Wahed AS. Bayesian inference using Burr model under asymmetric loss function: An application to carcinoma survival data. Journal of Statistical Research, 2006;40(1):45-57. Wahed AS. A general method of constructing extended families of distributions from an existing continuous class. Journal of Probability and Statistical Science 2006;4(2):165-177. Feng W and Wahed AS. A review of inferential procedures for survival analysis in two-stage randomization designs. Far East Journal of Theoretical Statistics 2006;19(1):117–139. Wahed AS and Tsiatis AA. Optimal estimator for the survival distribution and related quantities for treatment policies in two-stage randomization designs in clinical trials. Biometrics. 2004;60(1):124-133. Wahed AS and Ali MM. The skew-logistic distribution. Journal of Statistical Research. 2001;(35)2:71-80. Wahed AS and Uddin B. Bayes estimation under asymmetric loss. Dhaka University Journal of Science. 1998;46. Click here for a complete list of collaborative and other publications
June, 2011. Results from Virahep-C study, SIBS Seminar, Department of Biostatistics, University of Pittsburgh. June, 2011. Personalized Medicine and Dynamic Treatment Regimes, Central Indiana Chapter of the American Statistical Association. June, 2011. Risk Adjustment in Bariatric Surgery, 28th Annual Meeting of the American Society of Metabolic and Bariatric Surgery, Orlando, Florida. March, 2011. Evaluating the Joint Effect of Induction-Salvage Treatment Regimes in the Treatment of Leukemia, International Biometric Society (ENAR) spring meetings. Miami, Florida. December, 2010. (Jointly with Dylan Small of U. of Pennsylvania) Causal Inference in Observational Studies and Sequentially Randomized Designs. Dhaka University Statistics Department Alumni Association. Dhaka, Bangladesh. December, 2010. Accelerated failure time and proportional hazards models for sequentially randomized designs, Dhaka University Statistics Department Alumni Association. Dhaka, Bangladesh. November, 2010. Introduction to Survival Analysis (for non-statisticians), UPMC Mercy Graduate Medical Education Program, UPMC Mercy. Pittsburgh, Pennsylvania. May, 2010. Statistical Inference for Treatment Strategies From Two-Stage Randomization Designs When Second Randomization is Delayed, 2010 ICSA Applied Statistics Symposium. Indianapolis, IN. February, 2010. Adaptive Designs in Clinical Trials. School of Medicine, University of Pittsburgh. December, 2009. Assessing the Effect of Treatment Regimes on Longitudinal Outcome Data. Department of Applied Statistics, University of Dhaka, Bangladesh. December, 2009. A New Generalization to the Weibull Distribution With an Application to a Breast Cancer Dataset. 7th Triennial Statistics and Probability Conference. Kolkata, India. November, 2009. Statistical Methods for Comparing Dynamic Treatment Regimes with Time-To-Event Endpoints. Department of Statistics, University of Pittsburgh. November, 2009. Statistical Methods for Comparing Dynamic Treatment Regimes with Time-To-Event Endpoints. Center for Statistical Sciences, Brown University, RI. August, 2009. Dynamic Treatment Regimes in Leukemia Treatment. Joint Statistical Meetings 2009, American Statistical Association. February, 2009. Adaptive Designs in Clinical Trials. School of Medicine, University of Pittsburgh. September, 2008. Comparing Adaptive Treatment Strategies Following Sequential Multiple Assignment Randomization Trials, Clinical and Translational Sciences Research Institute, CHRC, RAND-Pittsburgh Institute, VA-CHERP. July, 2008. Inference on dynamic treatment regimes following sequential multiple assignment randomization trials, Center for Statistics at Queen Mary, University of London. February, 2008. Adaptive Treatment Strategies – One Step Forward Towards Individualized Treatment Rules. Dean’s Junior Faculty Seminar Series, Graduate School of Public Health, Pittsburgh. February, 2008. Adaptive Designs in Clinical Trials. School of Medicine, University of Pittsburgh. January 2008. Supremum Weighted Log-Rank Test and Sample Size for Comparing Two-Stage Adaptive Treatment Strategies. Department of Epidemiology, Biostatistics and Occupational Health, McGill University. June 2007. Semi-Parametric Methods for Estimating Causal Effect of Treatment Strategies in Two-Stage Randomization Clinical Trials. ICSA 2007 Applied Statistics Symposium, Raleigh, North Carolina. May 2007. Weibull-Based Approaches to Survival Analysis with Applications to Breast Cancer Data. Department of Mathematical Sciences, Ball State University, Muncie, Indiana. February 2007. Comparing Adaptive Treatment Strategies: Challenges and Solutions. Center for Health Equity, Research and Promotions (CHERP), VA Health Care System, Pittsburgh, December 2006. Survival Analysis for Comparing Adaptive Treatment Strategies. Department of Applied Statistics, University of Dhaka, Dhaka, Bangladesh. April 2006. Survival Analysis in Two-stage Randomization Designs in Leukemia Trials. Department of Mathematics and Statistics, University of Windsor, Windsor, Ontario. February 2006. Survival Analysis in Two-stage Randomization Designs in Oncolgy Trials. Invited presentation, Department of Biostatistics, College of Public Health, University of Kentucky. March 2006. Survival Analysis in Two-stage Randomization Designs. Invited lecture in the session CENSORED DATA IN THE ENVIRONMENTAL, AGRICULTURAL AND MEDICAL SCIENCES. International Biometric Society (ENAR) Spring meetings, 2006, Tampa, Florida. Click here for a complete list of presentations Contact Information 318C Parran Hall 130 DeSoto Street Pittsburgh, PA 15261 Telephone: 412-624-3053 Facsimile: 412-624-2183 Email: wahed@pitt.edu Last reviewed: June 16, 2011 |
