Listar por autor "López-de-Ullibarri, Ignacio"
Mostrando ítems 1-9 de 9
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A Product-Limit Estimator of the Conditional Survival Function When Cure Status Is Partially Known
Safari, Wende Clarence; López-de-Ullibarri, Ignacio; Jácome, M. A. (Wiley, 2021-03-01)[Abstract] We introduce a nonparametric estimator of the conditional survival function in the mixture cure model for right-censored data when cure status is partially known. The estimator is developed for the setting of a ... -
Differences in outcome of heart failure with preserved or depressed systolic function in patients older than 70 years who receive beta blockers
Anguita, Manuel; Castillo, Juan C.; Ruiz, Martín; Castillo, Francisco; Jiménez-Navarro, Manuel; Crespo-Leiro, María Generosa; Alonso-Pulpón, Luis; Teresa Galván, Eduardo de; Castro-Beiras, Alfonso; Roig, Eulàlia; Artigas, Remei; Zapata, Antonio; López-de-Ullibarri, Ignacio; Muñiz, Javier (Elsevier, 2011-10-14)[Abstract] Introduction and objectives. Most studies have shown that prognosis of heart failure with preserved systolic function is as poor as that of heart failure with depressed systolic function, although these results ... -
Effect of a training program for primary care physicians on the optimization of beta-blocker treatment in elderly patients with heart failure
Anguita, Manuel; Jiménez-Navarro, Manuel; Crespo-Leiro, María Generosa; Alonso-Pulpón, Luis; Teresa Galván, Eduardo de; Castro-Beiras, Alfonso; Roig, Eulàlia; Artigas, Remei; Zapata, Antonio; López-de-Ullibarri, Ignacio; Muñiz, Javier (Elsevier, 2010)[Abstract] Introduction and objectives. Underuse of beta-blockers may contribute to elevated mortality in chronic heart failure. The aim of this study was to determine whether a specific interventional training program for ... -
Nonparametric Inference for Mixture Cure Model When Cure Information Is Partially Available
Clarence Safari, Wende; López-de-Ullibarri, Ignacio; Jácome, M. A. (MDPI, 2021)[Abstract] We introduce nonparametric estimators to estimate the conditional survival function, cure probability and latency function in the setting of a mixture cure model when the cure status is partially known. For the ... -
Nonparametric Kernel Estimation of the Probability of Cure in a Mixture Cure Model when the Cure Status is Partially Observed
Safari, Wende Clarence; López-de-Ullibarri, Ignacio; Jácome, M. A. (Sage, 2022-08-01)[Abstract] Cure models are a class of time-to-event models where a proportion of individuals will never experience the event of interest. The lifetimes of these so-called cured individuals are always censored. It is usually ... -
npcure: An R Package for Nonparametric Inference in Mixture Cure Models
López-Cheda, Ana; Jácome, M. A.; López-de-Ullibarri, Ignacio (Technische Universitaet Wien, 2021)[Abstract] Mixture cure models have been widely used to analyze survival data with a cure fraction. They assume that a subgroup of the individuals under study will never experience the event (cured subjects). So, the goal ... -
survPresmooth: An R Package for Presmoothed Estimation in Survival Analysis
López-de-Ullibarri, Ignacio; Jácome, M. A. (American Statistical Association, 2013-08)[Abstract] The survPresmooth package for R implements nonparametric presmoothed estimators of the main functions studied in survival analysis (survival, density, hazard and cumulative hazard functions). Presmoothed versions ... -
Validation of a questionnaire of knowledge and attitudes about the subcutaneous venous reservoir in nursing
Raña-Rocha, Roberto; López-de-Ullibarri, Ignacio; Movilla Fernández, María Jesús; Coronado, Carmen (Universidade de São Paulo, 2020-04-17)[Abstract] Objective: design and validate a questionnaire to evaluate the knowledge and attitudes of nurses about the subcutaneous venous reservoir. Method: pilot test: 30 specialized care nurses. Main study: 236 nurses ... -
Wastewater early warning system for SARS-CoV-2 outbreaks and variants in a Coruña, Spain
Trigo-Tasende, Noelia; Vallejo, Juan Andrés; Rumbo-Feal, Soraya; Conde-Pérez, Kelly; Vaamonde, Manuel; López-Oriona, Ángel; Barbeito, Inés; Nasser-Ali, Mohammed; Reif López, Rubén; Rodiño-Janeiro, Bruno Kotska; Fernández-Álvarez, Elisa; Iglesias Corrás, Iago; Tarrío-Saavedra, Javier; Tomás, Laura; Gallego-García, Pilar; Posada, David; Bou, Germán; López-de-Ullibarri, Ignacio; Cao, Ricardo; Susana, Ladra; Poza, Margarita (Springer, 2023-07)[Abstract]: Wastewater-based epidemiology has been widely used as a cost-effective method for tracking the COVID-19 pandemic at the community level. Here we describe COVIDBENS, a wastewater surveillance program running ...