Results overview: Found 5 records in 0.02 seconds.
Articles, 5 records found
Articles 5 records found  
1.
16 p, 240.9 KB The asymptotic relative efficiency and the ratio of sample sizes when testing two different null hypotheses / Gómez Melis, Guadalupe (Universitat Politècnica de Catalunya. Departament d'Estadística i Investigació Operativa) ; Gómez-Mateu, Moisés (Universitat Politècnica de Catalunya. Departament d'Estadística i Investigació Operativa)
Composite endpoints, consisting of the union of two or more outcomes, are often used as the primary endpoint in time-to-event randomized clinical trials. Previously, Gómez and Lagakos provided a method to guide the decision between using a composite endpoint instead of one of its components when testing the effect of a treatment in a randomized clinical trial. [...]
2014
SORT : statistics and operations research transactions, Vol. 38, Núm. 1 (January-June 2014) , p. 73-88 (Articles)  
2.
19 p, 76.2 KB Interruptions of antiretroviral therapy in human immunodeficiency virus infection : are they detrimental to neurocognitive functioning? / Muñoz-Moreno, Jose Antonio (Institut Germans Trias i Pujol. Fundació de Lluita Contra la Sida) ; Fumaz, Carmina R. (Rodríguez Fumaz) (Institut Germans Trias i Pujol. Fundació de Lluita Contra la Sida) ; Prats, Anna (Institut Germans Trias i Pujol. Fundació de Lluita Contra la Sida) ; Ferrer, Maria J. (Institut Germans Trias i Pujol. Fundació de Lluita Contra la Sida) ; Negredo Puigmal, Eugènia (Institut Germans Trias i Pujol. Fundació de Lluita Contra la Sida) ; Pérez-Álvarez, Núria (Institut Germans Trias i Pujol. Fundació de Lluita Contra la Sida) ; Moltó, José (Institut Germans Trias i Pujol. Fundació de Lluita Contra la Sida) ; Gómez Melis, Guadalupe (Universitat Politècnica de Catalunya) ; Garolera i Freixa, Maite (Consorci Sanitari Hospital de Terrassa) ; Clotet Sala, Bonaventura (Institut Germans Trias i Pujol. Fundació de Lluita Contra la Sida) ; Universitat Autònoma de Barcelona
Background: Since interruptions of antiretroviral treatment may entail clinical risks for HIV-infected individuals, we investigated their impact on neurocognitive functioning. Methods: Cross-sectional study comparing HIV-infected persons who had interrupted antiretroviral therapy in the past (interruption group, IG) with persons who had never discontinued therapy (non-interruption group, NIG). [...]
2010
Journal of Neurovirology, Vol. 16, Issue 3 (May 2010) , p. 208-218
6 documents
3.
14 p, 162.2 KB Quantile estimation of the rejection distribution of food products integrating assessor values and interval-censored consumer data / Langohr, Klaus (Universitat Politècnica de Catalunya. Departament d'Estadística i Investigació Operativa) ; Gómez Melis, Guadalupe (Universitat Politècnica de Catalunya. Departament d'Estadística i Investigació Operativa) ; Hough, Guillermo (Instituto Superior Experimental de Tecnología Alimentaria. Departamento de Evaluación Sensorial de Alimentos)
Fitting parametric survival models with interval-censored data is a common task in survival analysis and implemented in many statistical software packages. Here, we present a novel approach to fit such models if the values on the scale of interest are measured with error. [...]
2013
SORT : statistics and operations research transactions, Vol. 37, Núm. 2 (July-December 2013) , p. 175-188  
4.
10 p, 2.8 MB Flexible geoadditive survival analysis of non-Hodgkin lymphoma in Peru / Flores, Claudio (Universitat Politècnica de Catalunya. Departament de Estadística) ; Rodríguez-Girondo, Mar (Universitat de Vigo. Grup de Recerca SiDOR) ; Cadarso-Suárez, Carmen (Universidad de Santiago de Compostela. Departamento de Estadística) ; Kneib, Thomas (Georg August University. Department of Economics) ; Gómez Melis, Guadalupe (Universitat Politècnica de Catalunya. Departament de Estadística) ; Casanova, Luis (Instituto Nacional de Enfermedades Neoplásicas (Lima, Perú))
Knowledge of prognostic factors is an important task for the clinical management of Non Hodgkin Lymphoma (NHL). In this work, we study the variables affecting survival of NHL in Peru by means of geoadditive Cox-type structured hazard regression models while accounting for potential spatial correlations in the survival times. [...]
2012
SORT : statistics and operations research transactions, Vol. 36, Núm. 2 (juliol-desembre 2012) , p. 221-230  
5.
22 p, 257.1 KB Nonparametric bivariate estimation for successive survival times / Serrat, Carles (Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada I) ; Gómez Melis, Guadalupe (Universitat Politècnica de Catalunya. Departament de Estadística)
Several aspects of the analysis of two successive survival times are considered. All the analyses take into account the dependent censoring on the second time induced by the first. Three nonparametric methods are described, implemented and applied to the data coming from a multicentre clinical trial for HIV-infected patients. [...]
2007
SORT : statistics and operations research transactions, Vol. 31, Núm. 1 (January-June 2007) , p. 75-96  

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