Showing 1 - 10 of 67
Common approaches to monotonic regression focus on the case of a unidimensional covariate and continuous dependent … based on AIC-type measures. The method is applied to several data sets. -- monotonic regression ; additive models …
Persistent link: https://www.econbiz.de/10002753340
In this paper we consider regression models for count data allowing for overdispersion in a Bayesian framework. Besides … autoregressive prior based on Pettitt et al. (2002). Apart from the Poisson regression model, the negative binomial and the … generalized Poisson regression model are addressed. Further, zero-inflated models combined with the Poisson and generalized …
Persistent link: https://www.econbiz.de/10002753399
(2004b) show that by data augmentation via the introduction of two sequences of latent variables a Poisson regression model … can be transformed into a normal linear model. We show how this methodology can be extended to spatial Poisson regression …
Persistent link: https://www.econbiz.de/10002753420
Kalyanam and Shively (1998) and van Heerde et al. (2001) have proposed semiparametric models to estimate the influence of price promotions on brand sales, and both obtained superior performance for their models compared to strictly parametric modeling. Following these researchers, we suggest...
Persistent link: https://www.econbiz.de/10002753423
Persistent link: https://www.econbiz.de/10002754539
This paper aims at proposing suitable statistical tools to address heterogeneity in repeated measures, within a Multiple Sclerosis (MS) longitudinal study. Indeed, due to unobservable sources of heterogeneity, modelling the effect of covariates on MS severity evolves as a very difficult feature....
Persistent link: https://www.econbiz.de/10002636905
strategies for therapy and research. In order to increase our understanding we developed a segmented regression model which …
Persistent link: https://www.econbiz.de/10002637052
Parameter estimates of logistic and Cox regression models are biased for finite samples. In a simulation study we …
Persistent link: https://www.econbiz.de/10002637276
We describe a stochastic model based on a branching process for analyzing surveillance data of infectious diseases that allows to make forecasts of the future development of the epidemic. The model is based on a Poisson branching process with immigration with additional adjustment for possible...
Persistent link: https://www.econbiz.de/10002638731
for such general mixed hazard regression models is derived using penalized likelihood for regression coefficients and … application to leukemia survival data in Northwest England. -- extended Cox model ; structured hazard regression ; mixed models …
Persistent link: https://www.econbiz.de/10002638738