Now showing items 71-80 of 280
New variable selection methods for zero‐inflated count data with applications to the substance abuse field
(John Wiley & Sons, Ltd., 2011-08-15)
Zero‐inflated count data are very common in health surveys. This study develops new variable selection methods for the zero‐inflated Poisson regression model. Our simulations demonstrate the negative consequences which ...
Semiparametric regression analysis for alternating recurrent event data
(Methuen and Company, Ltd.Wiley Periodicals, Inc., 2018-03-15)
A multiple imputation strategy for sequential multiple assignment randomized trials
(Springer‐Verlag, Inc.Wiley Periodicals, Inc., 2014-10-30)
Sequential multiple assignment randomized trials (SMARTs) are increasingly being used to inform clinical and intervention science. In a SMART, each patient is repeatedly randomized over time. Each randomization occurs at ...
Optimization of multi‐stage dynamic treatment regimes utilizing accumulated data
(Plenum PublishingWiley Periodicals, Inc., 2015-11-20)
A Dirichlet process mixture model for survival outcome data: assessing nationwide kidney transplant centers
(Wiley Periodicals, Inc.Springer, 2015-04-15)
Propensity score‐based diagnostics for categorical response regression models
(John Wiley & Sons, Inc., 2014-02-10)
On the difficulty of defining disease: A Darwinian perspective
(Kluwer Academic Publishers; Springer Science+Business Media, 2001-03)
Most attempts to craft a definition of disease seem to have tackled two tasks simultaneously: 1) trying to create a series of inclusion and exclusion criteria that correspond to medical usage of the word disease and 2) ...
A robust weighted Kaplan–Meier approach for data with dependent censoring using linear combinations of prognostic covariates
(John Wiley & Sons, Ltd., 2010-09-20)
The weighted Kaplan–Meier (WKM) estimator is often used to incorporate prognostic covariates into survival analysis to improve efficiency and correct for potential bias. In this paper, we generalize the WKM estimator to ...
Mixture cure model with random effects for the analysis of a multi-center tonsil cancer study
(John Wiley & Sons, Ltd., 2011-02-10)
Cure models for clustered survival data have the potential for broad applicability. In this paper, we consider the mixture cure model with random effects and propose several estimation methods based on Gaussian quadrature, ...