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Articles, 2 records found
Articles 2 records found  
1.
18 p, 391.2 KB On the optimism correction of the area under the receiver operating characteristic curve in logistic prediction models / Iparragirre, Amaia (Universidad del País Vasco. Departamento de Matemática Aplicada, Estadística e Investigación Operativa) ; Barrio Beraza, Irantzu (Universidad del País Vasco. Departamento de Matemática Aplicada, Estadística e Investigación Operativa) ; Rodríguez-Álvarez, María Xosé (BCAM-Basque Center for Applied Mathematics (Bilbao, País Basc))
When the same data are used to fit a model and estimate its predictive performance, this estimate may be optimistic, and its correction is required. The aim of this work is to compare the behaviour of different methods proposed in the literature when correcting for the optimism of the estimated area under the receiver operating characteristic curve in logistic regression models. [...]
2019 - 10.2436/20.8080.02.82
SORT : statistics and operations research transactions, Vol. 43 Núm. 1 (January-June 2019) , p. 145-162 (Articles)  
2.
20 p, 289.0 KB Comparison of two discrimination indexes in the categorisation of continuous predictors in time-to-event studies / Barrio Beraza, Irantzu (Universidad del País Vasco. Departamento de Matemática Aplicada, Estadística e Investigación Operativa) ; Rodríguez-Álvarez, María Xosé (Universidade de Vigo. Departamento de Estadística e Investigación Operativa) ; Meira-Machado, Luis (Universidade do Minho (Braga, Portugal). Centre of Mathematics and Department of Mathematics and Applications) ; Esteban, Cristóbal (Hospital Galdakao-Usansolo. Servicio de Neumología) ; Arostegui Madariaga, Inmaculada (Universidad del País Vasco. Departamento de Matemática Aplicada, Estadística e Investigación Operativa)
The Cox proportional hazards model is the most widely used survival prediction model for analysing time-to-event data. To measure the discrimination ability of a survival model the concordance probability index is widely used. [...]
2017 - 10.2436/20.8080.02.51
SORT : statistics and operations research transactions, Vol. 41 Núm. 1 (January-June 2017) , p. 73-92 (Articles)  

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