Evaluating frailty may complement APACHE II in estimating mortality in elderly patients admitted to the ICU after digestive surgery P. Ruiz de Gopegui Miguelena; M.T. Martínez Lamazares; L.M. Claraco Vega; M. Gurpegui Puente; I. González Almárcegui; P. Gutiérrez Ibañes; A. Carrillo López; C.M. Castiella García; J. Miguelena Hycka;

The impact of frailty on mortality in older patients admitted to an Intensive Care Unit L. Pasin; S. Boraso; G. Golino; B.S. Fakhr; I. Tiberio; C. Trevisan;

Comparison of the demographic characteristics and comorbidities of patients with COVID-19 who died in Spanish hospitals based on whether they were or were not admitted to an intensive care unit Ò. Miró; A. Alquézar-Arbé; P. Llorens; F.J. Martín-Sánchez; S. Jiménez; A. Martín; G. Burillo-Putze; J. Jacob; E.J. García-Lamberetchs; P. Piñera; J. González del Castillo;