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Browsing Articles by Subject "Anàlisi de supervivència (Estadística)"

Now showing items 1-7 of 7

A dynamic model for the risk of bladder cancer progression

Porta, Núria; Calle, M. Luz; Malats i Riera, Núria; Gómez, Guadalupe (Wiley, 2012)

We propose a multistate modeling approach to describe the observed evolution of patients diagnosed with nonmuscle- invasive bladder cancer. On the basis of data from the Spanish Bladder Cancer/EPICURO study, we adjust a ...
A generalized Fleming and Harrington’s class of tests for interval-censored data

Oller, Ramon; Gómez, Guadalupe (Société statistique du Canada, 2012)

The class Gρ,λ of weighted log-rank tests proposed by Fleming & Harrington [Fleming & Harrington (1991) Counting Processes and Survival Analysis, Wiley, New York] has been widely used in survival analysis and is nowadays, ...
Interval censoring: identifiability and the constant-sum property

Oller, Ramon; Gómez, Guadalupe; Calle, M. Luz (Oxford University Press, 2007)

The constant-sum property given in Oller et al. (2004) for censoring models justifies the use of a simplified likelihood to obtain the nonparametric maximum likelihood estimator of the lifetime distribution. In this paper ...
Interval censoring: model characterizations for the validity of the simplified likelihood

Oller, Ramon; Gómez, Guadalupe; Calle, M. Luz (Société statistique du Canada, 2004)

En analyse de durées de vie, le problème de la censure par intervalle a généralement été traité par des méthodes vraisemblantistes. Comme la vraisemblance est complexe, on suppose souvent que les mécanismes de censure ...
Nonparametric Bayesian estimation from interval-censored data using Monte Carlo methods

Calle, M. Luz; Gómez, Guadalupe (Elsevier, 2001)

We study the estimation of the survival function based on interval-censored data from a nonparametric Bayesian point of view. Interval censoring arises when the time variable of interest cannot be directly observed and ...
Number of consumers necessary for shelf life estimations based on survival analysis statistics

Hough, Guillermo; Calle, M. Luz; Serrat Jurado, Carles; Curia, Ana (Elsevier, 2007)

Survival analysis statistics have been used to estimate shelf life of foods based on consumers’ acceptance or rejection of samples with different storage times. The interval censored nature of the data does not allow ...
Tutorial on methods for interval-censored data and their implementation in R

Gómez, Guadalupe; Calle, M. Luz; Oller, Ramon; Langohr, Klaus (Sage, 2009)

Interval censoring is encountered in many practical situations when the event of interest cannot be observed and it is only known to have occurred within a time window. The theory for the analysis of interval-censored ...

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