The project develops models for analysis of multiple event times. Two projects are considered in this proposal. The first project proposes new methods for regression analysis of a class of stochastic process models called modulated renewal processes. They can be used to model multiple event times representing specific episodes in the disease progression of a patient. In this project we propose extensions of accelerated failure time and transformation models. We also consider parameter estimation in these models. The second project considers matched pair competing risk regression models. Models of this kind arise in biomedical and actuarial follow-up studies. In such studies, matching (or blocking) serves as a method to control for effects of prognostic variables on the variability of the outcomes represented by time and failure type. We propose a class of stochastic process models for analysis of matched pair competing risks. Both projects develop also applications to analysis of follow-up data from bone marrow and kidney transplant studies. We consider prediction of patient post-transplant experience based on pre-transplant characteristics and follow-up history.

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Project (R01)
Project #
5R01AI067943-03
Application #
7578350
Study Section
Biostatistical Methods and Research Design Study Section (BMRD)
Program Officer
Bridges, Nancy D
Project Start
2007-03-01
Project End
2012-02-29
Budget Start
2009-03-01
Budget End
2012-02-29
Support Year
3
Fiscal Year
2009
Total Cost
$248,243
Indirect Cost
Name
University of California Los Angeles
Department
Biostatistics & Other Math Sci
Type
Schools of Public Health
DUNS #
092530369
City
Los Angeles
State
CA
Country
United States
Zip Code
90095
Dabrowska, Dorota M (2012) Estimation in a semi-Markov transformation model. Int J Biostat 8:Article 15
Banerjee, Pinaki P; Orange, Jordan S (2010) Quantitative measurement of F-actin accumulation at the NK cell immunological synapse. J Immunol Methods 355:1-13
Dabrowska, Dorota M (2009) ESTIMATION IN A SEMI-PARAMETRIC TWO-STAGE RENEWAL REGRESSION MODEL. Stat Sin 19:981-996
Gjertson, David W; Clark, Bill D (2008) For an always promising transplant prediction, call ANN. Transplantation 86:1349-50