Now showing items 11-20 of 20
On weighting the rates in non-response weights
(John Wiley & Sons, Ltd., 2003-05-15)
A basic estimation strategy in sample surveys is to weight units inversely proportional to the probability of selection and response. Response weights in this method are usually estimated by the inverse of the sample-weighted ...
Variance estimation for clustered recurrent event data with a small number of clusters
(John Wiley & Sons, Ltd., 2005-10-15)
Often in biomedical studies, the event of interest is recurrent and within-subject events cannot usually be assumed independent. In semi-parametric estimation of the proportional rates model, a working independence assumption ...
Group sequential monitoring of years of life saved with paired censored survival data
(John Wiley & Sons, Ltd., 2002-01-30)
This research develops non-parametric methodology for sequential monitoring of paired time-to-event data when comparing years of life saved, or years where any unpleasant outcome is delayed, is of interest. The recommended ...
The Use of Simulation Models for the Surveillance, Justification and Understanding of Tobacco Control Policies
(Kluwer Academic Publishers; Springer Science+Business Media, 2002-04)
Debates over national tobacco legislation and the use of state settlement funds demonstrate a need for information on the effects of tobacco control policies. Computer simulation models that are based on empirical evidence ...
On summary measures analysis of the linear mixed effects model for repeated measures when data are not missing completely at random
(John Wiley & Sons, Ltd., 1999-09-15)
Subjects often drop out of longitudinal studies prematurely, yielding unbalanced data with unequal numbers of measures for each subject. A simple and convenient approach to analysis is to develop summary measures for each ...
Chronic Illness, Treatment Choice and Workforce Participation
(Kluwer Academic Publishers; Springer Science+Business Media, 2003-09)
Choices with respect to labor force participation and medical treatment are increasingly intertwined. Technological advances present patients with new choices and may facilitate continued employment for the growing number ...
A Bayesian hierarchical approach to multirater correlated ROC analysis
(John Wiley & Sons, Ltd., 2005)
In a common ROC study design, several readers are asked to rate diagnostics of the same cases processed under different modalities. We describe a Bayesian hierarchical model that facilitates the analysis of this study ...
Simulating the Allocation of Organs for Transplantation
(Kluwer Academic Publishers; Springer Science+Business Media, 2004-11)
The demand for donated organs greatly exceeds supply and many candidates die awaiting transplantation. Policies for allocating deceased donor organs may address equity of access and medical efficacy, but typically must be ...