X. Joan Hu

Professor of Statistics

Department of Statistics and Actuarial Science
Simon Fraser University
8888 University Drive
Burnaby, BC V5A1S6
Canada
Email: joanh@stat.sfu.ca
Tel: (778) 782-6714
Fax: (778) 782-4368


Research Interests  |  Teaching  |  Brief Biography  |  Publications


Research Interests

Dr. Hu's statistical research has been primarily in the development of methodology for complex data analysis. Her contributions in the area include pseudo-likelihood based and estimating function approaches with supplementary information. Evolving from her early work dealing with event history data, such as censored/truncated lifetimes and panel counts, Dr. Hu's recent interests are in analyzing various incomplete stochastic process data. Her on-going projects include analyses of longitudinal data with latent classes and marked point processes with a spatial correlation. Another research area is statistical monitoring in clinical trials. Jointly with Steve Lagakos, she proposed the repeated confidence bands approach for interim reviews.

Dr. Hu has collaborated with investigators in a variety of research fields, including HIV/AIDS, cancer, public health, reliability, forest fire control, political science and marketing. She enjoys identifying statistical problems from practical projects and developing approaches to dealing with the issues. She is currently working on a CIHR sponsored project in pediatric mental health, and has been collaborating with the researchers of the CAYACS program at BC Cancer Agency to analyze medical insurance data of young cancer survivors.



Teaching




Brief Biography



Featured Publications

Papers in Statistical Journals

  • Lawless, J.F., Hu, X.J., and Cao, J. (1995). ``Methods for the Estimation of Failure Distributions and Rates from Automobile Warranty Data," Lifetime Data Analysis 1: 227-240. (pdf file)
  • Hu, X.J. and Lawless, J.F. (1996). ``Estimation from Truncated Lifetime Data with Supplementary Information on Covariates and Censoring Times," Biometrika 83: 747-761. (pdf file)
  • Hu, X.J. and Lawless, J.F. (1996). ``Estimation of Rate and Mean Functions from Truncated Recurrent Event Data," J. Amer. Statist. Assoc. 91: 300-310. (pdf file)
  • Hu, X.J. and Lawless, J.F. (1997). ``Pseudolikelihood Estimation in a Class of Problems with Response-Related Missing Covariates," The Canadian Journal of Statistics 25: 125-142. (pdf file)
  • Hu, X.J., Lawless, J.F., and Suzuki, K. (1998). ``Nonparametric Estimation of a Lifetime Distribution When Censoring Times are Missing," Technometrics 40: 3-13. (pdf file)
  • Hu, X.J. and Lagakos, S.W. (1999). ``Interim Analyses for the Mean Function of a Stochastic Process, with application to AIDS Clinical Trials," Statistics in Medicine 18: 2287-99. (pdf file)
  • Hu, X.J. and Lagakos, S.W. (1999). ``Interim Analyses Using Repeated Confidence Bands," Biometrika 86: 517-29. (pdf file)
  • Hu, X.J., Sun, J. and Wei, L.J. (2003). ``Regression Analysis of Panel Count Data," Scandinavian Journal of Statistics, 25: 25-43. (pdf file)
  • Hu, X.J., Schroeder, R.J., Wang, W.C., and Boyett, J.M. (2007). ``Pseudoscore-based estimation from biased observations", Statistics in Medicine, 26: 2836-52. (pdf file)
  • Hu, X.J. and Lagakos, S.W. (2007). ``Nonparametric Estimation of the Mean Function of a Stochastic Process with Missing Observations", Lifetime Data Analysis, 13: 51-73. (pdf file)
  • Wu, L., Hu, X.J., and Wu, H. (2008). ``Joint Inference for Nonlinear Mixed-Effects Models and Time-to-Event at the Presence of Missing Data", Biostatistics, 9: 308-320. (pdf file)
  • Hu, X.J., Lagakos, S.W., and Lockhart, R.A. (2009). ``Generalized Least Squares Estimation of the Mean Function of a Counting Process Based on Panel Counts", Statistic Sinica, 19: 561-80. (pdf file)
  • Zhao, L., Hu, X.J., and Lagakos, S.W. (2009). ``Statistical Monitoring of Clinical Trials with Multivariate Response and/or Multiple Arms: a Flexible Approach", Biostatistics, 10: 310-23. (pdf file)
  • Hu, X.J., Lagakos, S.W., and Lockhart, R.A. (2009). ``Marginal Analysis of Panel Counts Through Estimating Functions", Biometrika, 96: 445-456. (pdf file)
  • Wu, L., Liu, W. and Hu, X.J. (2010). ``Joint Inference on HIV Viral Dynamics and Immune Suppression in Presence of Measurement Errors", Biometrics, 66: 327-335. (pdf file)
  • Hu, X.J. and Zhang, B. (2010). ``Pseudolikelihood Based Testing Procedures with Response-Related Incomplete Data", Statistical Papers, July 2010. (pdf file)
  • Hu, X.J., Lorenzi, M., Spinelli, J., Ying, S.C., and McBride, M. (2011). ``Analysis of Recurrent Events with Non-negligible Event Duration", Lifetime Data Analysis, 17: 215-233. (pdf file)
  • Cook, V.J., Hu, X.J. and Swartz, T.B. (2011). ``Cox Regression with Missing Non-Random Covariates," Statistics in Biosciences, 3: 208-222. (pdf file)
  • Zhao, L. and Hu, X.J. (2013). ``Estimation with Right-Censored Observations Under Semi-Markov Model," Canadian Journal of Statistics, 41: 237-256. (pdf file)
  • Huang, Y., Hu, X.J., and Dagne, G.A. (2014). ``Jointly modeling time-to-event and longitudinal data: a Bayesian approach," Statistical Methods & Applications, 23: 95-121. (pdf file)
  • Wang, H., Hu, X.J., McBride, M.L., and Spinelli, J.J. (2014). ``Analysis of Counts with Two Latent Classes, with Application to Risk Assessment Based on Physician-Visit Records of Cancer Survivors," Biostatistics, 15: 384-397. (pdf file and Supplementary Material)
  • Review Papers

  • Dean, C.B. and Hu, X.J. (2012). 'Longitudinal Studies' in Encyclopedia of Environmetrics Second Edition , A.-H. El-Shaarawi and W. Piegorsch (eds ). John Wiley & Sons Ltd, Chichester, UK, pp. 1514 - 1518 . DOI 10.1002/9780470057339.val018.pub2 (pdf file)
  • Papers of Statistical Applications

  • Gulick, R.M., Hu, X.J., Fiscus, S.A., Fletcher, C.V., Haubrich, R., Cheng, H., Edward A., Lagakos, S.W., Swanstrom R., Freimuth, W., Snyder, S., Mills, C., Fischl, M., Pettinelli, C., and Katzenstein D.  (2000). ``Randomized Study of Saquinavir with Ritonavir or Nelfinavir Together with Delavirdine, Adefovir or Both in HIV-Infected Adults with Virologic Failure on Indinavir: AIDS Clinical Trials Group (ACTG) Study 359," The Journal of Infectious Diseases, 182: 1375-84. (pdf file)
  • Steen, R.G., Hu, X.J., Elliott, V.E., Miles, M.A., Jones, S., and Wang, W.C (2002) ``Kindergarten Readiness Skills in Children with Sickle Cell Disease: Evidence of Early Neurocognitive Damage?" Journal of Child Neurology, 17: 111-6.
  • Gulick, R.M., Hu, X.J., Fiscus, S.A., Fletcher, C.V., Haubrich, R., Cheng, H., Edward A., Lagakos, S.W., Swanstrom R., Freimuth, W., Snyder, S., Mills, C., Fischl, M., Pettinelli, C., and Katzenstein D. (2002). ``Durability of Response to Treatment for Antiretroviral-experienced Subjects: 48 Week Results from AIDS Clinical Trials Group (ACTG) Study 359," The Journal of Infectious Diseases, 186: 626-33. (pdf file)
  • McBride, M.L., Rogers, P.C., Sheps, S.B., Glickman, V., Broemeling, A.M., Goddard, K., Hu, X.J., Lorenzi, M., Peacock, S., Pritchard, S., Rassekh, S.R., Siegel, L., Spinelli, J.J., Teckle, P. and Xie, L. (2010). ``Childhood, Adolescent, and Young Adult Cancer Survivors Research Program of British Columbia: Objectives, Study Design, and Cohort Characteristics", Pediatr Blood Cancer, 55: 324-330. (pdf file)

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    Last modified in January 2015