Felipe Andrés Medina Marín

University of Chile · Escuela de Salud Pública

MP4 y PDF de la presentación "Cuando los resultados son demasiado buenos para ser verdad: Revisando las lecciones del reanálisis de los resultados de Mendel". “One can applaud the lucky gambler; but when he is lucky again tomorrow, and the next day, and the following day, one is entitled to become a little suspicious” (Edwards, 1986). En esta pres...

Background To examine the relationship between neutrophil-to-lymphocyte ratio (NLR), age, and mortality rates after emergency surgery. Methods In this observational study, a total of 851 patients undergoing emergency surgery between January 2022 and January 2023 were retrospective examined. Using 30 and 180 days mortality data, NLR differences and...

Introducción: El sexismo en la educación contribuye a perpetuar desigualdades de género en la formación de profesionales. A pesar de los esfuerzos institucionales para erradicarlo, no hay evidencia de resultados en los currículos formales. Este estudio busca evaluar la presencia de sexismo y androcentrismo en los currículos de las carreras universi...

As COVID-19 is spreading, national agencies need to monitor and track several metrics. Since we do not have perfect testing programs on the hand, one needs to develop an advanced sampling strategies for prevalence study, control and management. Here we introduce REDACS: Regional emergency driven adaptive cluster sampling for effective COVID-19 {man...

Revisamos cómo las simulaciones pueden asistir a la inferencia estadística. Primero revisamos el método bootstrap para calcular intervalos de confianza y vimos cómo adaptarlo al ajuste de curvas de germinación para además guiar la selección de modelos. Luego revisamos un estudio basado en simulaciones para evaluar la influencia del diseño experimen...

Conceptual properties norming studies (CPNs) ask participants to produce properties that describe concepts. From that data, different metrics may be computed (e.g., semantic richness, similarity measures), which are then used in studying concepts and as a source of carefully controlled stimuli for experimentation. Notwithstanding those metrics’ dem...

Background: Glioblastoma (GB, formally glioblastoma multiforme) is a malignant type of brain cancer that currently has no cure and is characterized by being highly heterogeneous with high rates of re-incidence and therapy resistance. Thus, it is urgent to characterize the mechanisms of GB pathogenesis to help researchers identify novel therapeutic...

En esta presentación revisamos algunas prácticas cuestionables en investigación que están relacionadas con el uso y abuso del valor de p ("p-value"), así como por la presión que existe por publicar en revistas científicas que se resume en publicar o perecer ("publish or perish"). En particular, en esta presentación se describen en qué consisten las...

Discussion on "Covariate-assisted ranking and screening for large-scale two-sample inference"

Vulnerability assessments are commonly based on complex indices that may be inappropriate for characterizing risks in small groups of people exposed to environmental hazards. The aim was to present a multivariate and geostatistical approach to explore human health risks at the individual, household and community level. First, biological and socioec...