Vitamin D deficiency and SARS‑CoV‑2 infection: A retrospective case-Control study with big-data analysis covering March 2020 to March 2021.

Background: Vitamin D may have immunomodulatory functions, and might therefore play a role in the pathogenesis of acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. However, no conclusive evidence exists regarding its impact on the prevalence of this infection, the associated course of disease, or prognosis.

Objective: To study the association between SARS-CoV-2 infection and vitamin D deficiency in patients attending a tertiary university hospital, and to examine the clinical course of infection and prognosis for these patients.

Handgrip strength predicts 1-year functional recovery and mortality in hip fracture patients.

Objectives: Muscle strength is a possible predictor of adverse events. It could have prognostic value in patients with hip fracture (HF). The aim of this study was to determine if handgrip strength is associated with functional impairment, readmissions, and mortality at one year in elderly patients with HF.

[Impact of hospital admission on centenarians admitted due to an acute illness. A description of a series of 165 cases and comparison with the literature].

Introduction: The number of centenarians is increasing with the aging of the Spanish population. This age group might present different clinical features from younger groups. This study was carried out to determine the impact hospital admission on centenarians with an acute disease.