Background: Reports of ethnic inequalities in COVID-19 outcomes are conflicting and the
reasons for any differences in outcomes are unclear. We investigated ethnic inequalities in …

Introduction The emergence of the novel respiratory SARS-CoV-2 and subsequent COVID-19
pandemic have required rapid assimilation of population-level data to understand and …

Background While population estimates suggest high vaccine effectiveness against SARS-CoV-2
infection, the protection for health care workers, who are at higher risk of SARS-CoV-2 …

Background mortality in care homes has had a prominent focus during the COVID-19 outbreak.
Care homes are particularly vulnerable to the spread of infectious diseases, which may …

Objective To characterize trends in incidence, prevalence, and health care outcomes in the
idiopathic intracranial hypertension (IIH) population in Wales using routinely collected health …

Background frailty has major implications for health and social care services internationally.
The development, validation and national implementation of the electronic Frailty Index (eFI) …

The past three decades have seen a steady increase in the availability of routinely collected
health and social care data and the processing power to analyse it. These developments …

Background The electronic Frailty Index (eFI) has been developed in primary care settings.
The Hospital Frailty Risk Score (HFRS) was derived using secondary care data. Objective …

The ideal method of identifying frailty is uncertain, and data on long-term outcomes is
relatively limited. We examined frailty indices derived from population-scale linked data on …

Introduction School-based COVID-19 mitigation strategies have greatly impacted the primary
school day (children aged 3–11) including: wearing face coverings, two metre distancing, …