2/27/2015 Friday 1:30pm - 2:50pm, Geno Café (E3607)
3/27/2015 Shanshan Ding, University of Delaware
Title: Nonparametric Methods for Interval Censored Data
Speaker: Michael Fay, Biostatistics Research Branch, National Institute of Allergy and Infectious Diseases, NIH.
Interval censored data are time to event data where for each
observation we do not observe the event but only know that it is bracketed
between two assessment times. For
example, if the event is time until HIV is first detectable in the blood, then
we only know that the event happened after the last blood draw with no
detectable HIV and before the first blood draw with detectable HIV. The talk will be a review, focusing on the
nonparametric maximum likelihood estimator of survival and different types of weighted
logrank tests. I will discuss the
validity of testing treatment effects using different logrank implementations
(e.g., permutation tests, score tests, multiple imputation tests) when assessment
times may depend on treatment.
4/3/2015 Zhezhen Jin, Department of Biostatistics, Columbia University
4/24/2015 "A Framework for Quantifying Risk Stratification from Diagnostic Tests"
Hormuzd A. Katki, National Cancer Institute, NIH
5/8/2015 Gary Chan, University of Washington5/15/2015 TBA