The influence of the dynamic context of the pandemic on the predictive performance of mortality predictions over time in older patients hospitalised for COVID-19.

Objective: During the COVID-19 pandemic, dynamic factors such as governmental policies, improved treatment and prevention options and viral mutations changed the incidence of outcomes and possibly changed the relation between predictors and outcomes. The aim of the present study was to assess whether the dynamic context of the pandemic influenced the predictive performance of mortality predictions over time in older patients hospitalised for COVID-19.

Study Design And Setting: The COVID-OLD study, a multicentre cohort study in the Netherlands, included COVID-19 patients aged 70 years and older hospitalised during the first (early 2020), second (late 2020), third (late 2021) or fourth wave (early 2022).

The association of inflammatory markers with frailty and in-hospital mortality in older COVID-19 patients.

Introduction: During the COVID19 pandemic, older patients hospitalized for COVID-19 exhibited an increased mortality risk compared to younger patients. While ageing is associated with compromised immune responses and frailty, their contributions and interplay remain understudied. This study investigated the association between inflammatory markers and mortality and potential modification by frailty among older patients hospitalized for COVID-19.

Differences in characteristics and outcomes of older patients hospitalized for COVID-19 after introduction of vaccination.

Purpose: The aim of the present study was to investigate characteristics and outcomes in vaccinated and unvaccinated older patients hospitalized for COVID-19 infection.

Methods: A retrospective multicentre cohort study among patients aged ≥70 years hospitalized for COVID-19 infection.

Results: 263 vaccinated and 82 unvaccinated patients were included.

Preparing for future pandemics: frailty associates with mortality in hospitalised older people during the entire COVID-19 pandemic, a Dutch multicentre cohort study.

Purpose: Viral mutations and improved prevention or treatment options may have changed the association of frailty with mortality throughout the COVID-19 pandemic. We investigated how associations of frailty with in-hospital mortality changed throughout the pandemic in older people hospitalised for COVID-19.

Methods: The COVID-OLD study included COVID-19 patients aged ≥ 70 years hospitalised during the first (early 2020), second (late 2020), third (late 2021) or fourth wave (early 2022).

Older people's goals of care in relation to frailty status-the COOP-study.

Background: Literature relating older people's goals of care to their varying frailty status is scarce.

Objective: To investigate goals of care in case of acute and/or severe disease in relationship to frailty status among the general older population.

Method: Older people aged ≥70 in the Netherlands completed a questionnaire.