SORT

SORT Encontrados 8 registros  La búsqueda tardó 0.00 segundos. 
1.
11 p, 106.1 KB Likelihood for interval-censored observations from multi-state models / Commenges, Daniel (INSERM Team of Biostatistics)
We consider the mixed dicrete-continuous pattern of observation in a multi-state model; this is a classical pattern because very often clinical status is assessed at discrete visit times while time of death is observed exactly. [...]
2003
SORT : statistics and operations research transactions, Vol. 27, Núm. 1 (January-June 2003) , p. 1-12  
2.
17 p, 189.5 KB Cumulative processes related to event histories / Cook, Richard J. (University of Waterloo) ; Lawless, Jerald F. (University of Waterloo) ; Lee, Ker-Ai (University of Waterloo)
Costs or benefits which accumulate for individuals over time are of interest in many life history processes. Familiar examples include costs of health care for persons with chronic medical conditions, the payments to insured persons during periods of disability, and quality of life which is sometimes used in the evaluation of treatments in terminally ill patients. [...]
2003
SORT : statistics and operations research transactions, Vol. 27, Núm. 1 (January-June 2003) , p. 13-30  
3.
10 p, 131.7 KB A sensitivity analysis for causal parameters in structural proportional hazards models / Goetghebeur, E. (Ghent University) ; Loeys, T. (Ghent University)
Deviations from assigned treatment occur often in clinical trials. In such a setting, the traditional intent-to-treat analysis does not measure biological efficacy but rather programmatic effectiveness. [...]
2003
SORT : statistics and operations research transactions, Vol. 27, Núm. 1 (January-June 2003) , p. 31-40  
4.
23 p, 200.1 KB Survival analysis with coarsely observed covariates / Feodor Nielsen, Soren (University of Copenhagen)
In this paper we consider analysis of survival data with incomplete covariate information. We model the incomplete covariates as a random coarsening of the complete covariate, and an overview of the theory of coarsening at random is given. [...]
2003
SORT : statistics and operations research transactions, Vol. 27, Núm. 1 (January-June 2003) , p. 41-64  
5.
14 p, 124.4 KB Aspects of the analysis of multivariative failure time data / Prentice, R. L. ; Kalbfleisch, John D.
Multivariate failure time data arise in various forms including recurrent event data when individuals are followed to observe the sequence of occurrences of a certain type of event; correlated failure time when an individual is followed for the occurrence of two or more types of events for which the individual is simultaneously at risk, or when distinct individuals have dependent event times; or more complicated multistate processes when individuals may move among a number of discrete states over the course of a follow-up study and the states and associated sojourn times are recorded. [...]
2003
SORT : statistics and operations research transactions, Vol. 27, Núm. 1 (January-June 2003) , p. 65-78  
6.
15 p, 137.4 KB Indirect inference for survival data / Turnbull, Bruce W. (Cornell University) ; Jiang, Wenxin (Cornell University)
In this paper we describe the so-called "indirect" method of inference, originally developed from the econometric literature, and apply it to survival analyses of two data sets with repeated events. This method is often more convenient computationally than maximum likelihood estimation when handling such model complexities as random effects and measurement error, for example; and it can also serve as a basis for robust inference with less stringent assumptions on the data generating mechanism. [...]
2003
SORT : statistics and operations research transactions, Vol. 27, Núm. 1 (January-June 2003) , p. 79-94  
7.
17 p, 161.7 KB Optimization of touristic distribution netwoorks using genetic algorithms / Medina, Josep R. (Universidad Politécnica de Valencia) ; Yepes, Victor (Agència Valenciana del Turisme)
The eight basic elements to design genetic algorithms (GA) are described and applied to solve a low demand distribution problem of passengers for a hub airport in Alicante and 30 touristic destinations in Northern Africa and Western Europe. [...]
2003
SORT : statistics and operations research transactions, Vol. 27, Núm. 1 (January-June 2003) , p. 95-112  
8.
23 p, 294.2 KB An empirical evaluation of five small area estimators / Costa, Alex (Institut d'Estadística de Catalunya (Idescat)) ; Satorra, Albert (Universitat Pompeu Fabra) ; Ventura, Eva (Universitat Pompeu Fabra)
This paper compares five small area estimators. We use Monte Carlo simulation in the context of both artificial and real populations. In addition to the direct and indirect estimators, we consider the optimal composite estimator with population weights, and two composite estimators with estimated weights: one that assumes homogeneity of within area variance and squared bias and one that uses area-specific estimates of variance and squared bias. [...]
2003
SORT : statistics and operations research transactions, Vol. 27, Núm. 1 (January-June 2003) , p. 113-136  

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