Objective To review and appraise the validity and usefulness of published and preprint
reports of prediction models for prognosis of patients with covid-19, and for detecting people …

Evaluating the performance of a clinical prediction model is crucial to establish its predictive
accuracy in the populations and settings intended for use. In this article, the first in a three …

Background Emergence of variants with specific mutations in key epitopes in the spike
protein of SARS-CoV-2 raises concerns pertinent to mass vaccination campaigns and use of …

Background This study sought to establish the long-term effects of Covid-19 following
hospitalisation. Methods 327 hospitalised participants, with SARS-CoV-2 infection were …

In acute coronavirus disease 19 (COVID‐19) patients, effective clinical risk stratification has
important implications on treatment and therapeutic resource distribution. This article …

Most clinical specialties have a plethora of studies that develop or validate one or more
prediction models, for example, to inform diagnosis or prognosis. Having many prediction …

Low blood oxygen—technically, hypoxaemia but usually referred to as hypoxia—can be
defined as a measured oxygen saturation below 94% in the absence (or below 88% in the …

An external validation study evaluates the performance of a prediction model in new data,
but many of these studies are too small to provide reliable answers. In the third article of their …

The COVID-19 pandemic strained health-care systems throughout the world. For some,
available medical resources could not meet the increased demand and rationing was …

Background SARS-CoV-2 induces a spectrum of clinical conditions ranging from
asymptomatic infection to life threatening severe disease. Host microRNAs have been …