Method for evaluating the usability of interactive digital television applications

This article proposes the extent of an inspection method called RECOEXTDI (REcorrido COgnitivo EXtendido para Publicaciones de Televisión Digital Interactiva) to evaluate the usability of applications supported on Interactive DigitalTelevision (IDT) environments. The former method has three basic inputs: The original cognitive walkthrough method,the characteristics of TDI applications, and early testing performed in a TDI laboratory. To assess RECOEXTDI, it isdescribed a case study in which an evaluation of the usability of a TDI application is made, by using the traditionaland the extended method. In this way, the results obtained are compared with the implementation of the two methodsdescribed. The RECOEXTDI method allowed finding a larger number of usability problems in shorter time, comparedwith the traditional method.  En este artículo propone la extensión de un método de inspección denominado RECOEXTDI (REcorrido COgnitivo EXtendido para aplicaciones de Televisión Digital Interactiva), que evalúa la usabilidad de aplicaciones soportadas en ambientes de Televisión Digital Interactiva (TDI). El método propuesto tiene tres insumos básicos: el método original del recorrido cognitivo, las características de las aplicaciones de TDI y una experimentación inicial realizada en un laboratorio de TDI. Para la evaluación de RECOEXTDI se describe un caso de estudio en el que se hace una evaluación de usabilidad de una aplicación TDI utilizando el método tradicional y el extendido. De esta manera, se comparan los resultados obtenidos con la ejecución de los dos métodos. El método RECOEXTDI permitió encontrar una mayor cantidad de problemas de usabilidad en menor tiempo comparado con el método tradicional

Method for evaluating the usability of interactive digital television applications

This article proposes the extent of an inspection method called RECOEXTDI (REcorrido COgnitivo EXtendido para Publicaciones de Televisión Digital Interactiva) to evaluate the usability of applications supported on Interactive DigitalTelevision (IDT) environments. The former method has three basic inputs: The original cognitive walkthrough method,the characteristics of TDI applications, and early testing performed in a TDI laboratory. To assess RECOEXTDI, it isdescribed a case study in which an evaluation of the usability of a TDI application is made, by using the traditionaland the extended method. In this way, the results obtained are compared with the implementation of the two methodsdescribed. The RECOEXTDI method allowed finding a larger number of usability problems in shorter time, comparedwith the traditional method.  En este artículo propone la extensión de un método de inspección denominado RECOEXTDI (REcorrido COgnitivo EXtendido para aplicaciones de Televisión Digital Interactiva), que evalúa la usabilidad de aplicaciones soportadas en ambientes de Televisión Digital Interactiva (TDI). El método propuesto tiene tres insumos básicos: el método original del recorrido cognitivo, las características de las aplicaciones de TDI y una experimentación inicial realizada en un laboratorio de TDI. Para la evaluación de RECOEXTDI se describe un caso de estudio en el que se hace una evaluación de usabilidad de una aplicación TDI utilizando el método tradicional y el extendido. De esta manera, se comparan los resultados obtenidos con la ejecución de los dos métodos. El método RECOEXTDI permitió encontrar una mayor cantidad de problemas de usabilidad en menor tiempo comparado con el método tradicional

Comparación de distintas estrategias para la predicción de muerte a corto plazo en el paciente anciano infectado

Objective. The aim of this study was to determine the utility of a post hoc lactate added to SIRS and qSOFA score to predict 30-day mortality in older non-severely dependent patients attended for infection in the Emergency Department (ED). Methods. We performed an analytical, observational, prospective cohort study including patients of 75 years of age or older, without severe functional dependence, attended for an infectious disease in 69 Spanish ED for 2-day three seasonal periods. Demographic, clinical and analytical data were collected. The primary outcome was 30-day mortality after the index event. Results. We included 739 patients with a mean age of 84.9 (SD 6.0) years; 375 (50.7%) were women. Ninety-one (12.3%) died within 30 days. The AUC was 0.637 (IC 95% 0.587-0.688; p= 2 and 0.698 (IC 95% 0.635- 0.761; p= 2. Comparing receiver operating characteristic (ROC) there was a better accuracy of qSOFA vs SIRS (p=0.041). Both scales improve the prognosis accuracy with lactate inclusion. The AUC was 0.705 (IC95% 0.652-0.758; p<0.001) for SIRS plus lactate and 0.755 (IC95% 0.696-0.814; p<0.001) for qSOFA plus lactate, showing a trend to statistical significance for the second strategy (p=0.0727). Charlson index not added prognosis accuracy to SIRS (p=0.2269) or qSOFA (p=0.2573). Conclusions. Lactate added to SIRS and qSOFA score improve the accuracy of SIRS and qSOFA to predict short-term mortality in older non-severely dependent patients attended for infection. There is not effect in adding Charlson index

Método para evaluar la usabilidad de aplicaciones de televisión digital interactiva: RECOEXTDI

This article proposes the extent of an inspection method called RECOEXTDI (REcorrido COgnitivo EXtendido para Publicaciones de Televisión Digital Interactiva) to evaluate the usability of applications supported on Interactive DigitalTelevision (IDT) environments. The former method has three basic inputs: The original cognitive walkthrough method,the characteristics of TDI applications, and early testing performed in a TDI laboratory. To assess RECOEXTDI, it isdescribed a case study in which an evaluation of the usability of a TDI application is made, by using the traditionaland the extended method. In this way, the results obtained are compared with the implementation of the two methodsdescribed. The RECOEXTDI method allowed finding a larger number of usability problems in shorter time, comparedwith the traditional method.  En este artículo propone la extensión de un método de inspección denominado RECOEXTDI (REcorrido COgnitivo EXtendido para aplicaciones de Televisión Digital Interactiva), que evalúa la usabilidad de aplicaciones soportadas en ambientes de Televisión Digital Interactiva (TDI). El método propuesto tiene tres insumos básicos: el método original del recorrido cognitivo, las características de las aplicaciones de TDI y una experimentación inicial realizada en un laboratorio de TDI. Para la evaluación de RECOEXTDI se describe un caso de estudio en el que se hace una evaluación de usabilidad de una aplicación TDI utilizando el método tradicional y el extendido. De esta manera, se comparan los resultados obtenidos con la ejecución de los dos métodos. El método RECOEXTDI permitió encontrar una mayor cantidad de problemas de usabilidad en menor tiempo comparado con el método tradicional

Structural Analysis of Glaucoma Brain and its Association with Ocular Parameters

Purpose: To evaluate structural brain abnormalities in glaucoma patients using 3-Tesla magnetic resonance imaging and assess their correlation with associated structural and functional ocular findings. Patients and Methods: This cross-sectional prospective study included 30 glaucoma patients and 18 healthy volunteers. All participants underwent standard automated perimetry, spectral-domain optical coherence tomography, and 3.0-Tesla magnetic resonance imaging. Results: There was a significant difference between the surface area of the occipital pole in the left hemisphere of glaucoma patients (mean: 1253.9±149.3 mm2) and that of control subjects (mean: 1341.9±129.8 mm2), P=0.043. There was also a significant difference between the surface area of the occipital pole in the right hemisphere of glaucoma patients (mean: 1910.5±309.4 mm2) and that of control subjects (mean: 2089.1±164.2 mm2), P=0.029. There was no significant difference between the lingual, calcarine, superior frontal, and inferior frontal gyri of glaucoma patients and those of the control subjects (P&gt;0.05 for all comparisons). The surface area of the occipital pole in the left hemisphere was significantly correlated with perimetry mean deviation values, visual acuity, age, and retinal nerve fiber layer thickness (P=0.001, P&lt;0.001, P=0.010, P=0.006, respectively). The surface area of the occipital pole in the right hemisphere was significantly correlated with perimetry mean deviation values, visual field indices, visual acuity, age, and retinal nerve fiber layer thickness (P&lt;0.001, P=0.007, P&lt;0.001, P=0.046, P&lt;0.001, respectively). Conclusions: Glaucoma patients presented a decreased occipital pole surface area in both hemispheres that independently correlated with functional and structural ocular parameters. Copyright © 2020 Wolters Kluwer Health, Inc