Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Variation in influenza vaccine assessment, receipt, and refusal by the concentration of Medicare Advantage enrollees in U.S. nursing homes
Using an electronic frailty index to predict adverse outcomes in geriatric COVID-19 patients: data from the Stockholm GeroCovid study
pIVW: A novel Mendelian Randomization Method Accounting for Weak Instruments and Horizontal Pleiotropy with Applications to the COVID-19 Outcomes
S glycoprotein diversity of the Omicron variant
Obesity and COVID-19 Mortality: A Cross-Country Analysis
It's possibly made us feel a little more alienated: How people from ethnic minority communities conceptualise COVID-19 and its influence on engagement with testing.
Antimicrobial consumption in pediatric intensive care units during the first year of COVID-19 pandemic
Microbial Community of Small Intestine in Acute Severe Pancreatitis Patients: a Pilot Study
Large-Scale Hypothesis Testing for Causal Mediation Effects with Applications in Genome-wide Epigenetic Studies
COVID-19 testing systems and their effectiveness in small, semi-isolated groups for sports events
Symptoms compatible with long-COVID in healthcare workers with and without SARS-CoV-2 infection - results of a prospective multicenter cohort
Rapid, Near Point-of-Care Assay for HLA-B*57:01 Genotype Associated with Severe Hypersensitivity Reaction to Abacavir
Study protocol for an inception cohort investigating possible predictors of systemic steroids effectiveness in treatment of acute sciatic pain
Therapeutic application of alpha-1-antitrypsin in COVID-19
Statin use in relation to intraocular pressure, glaucoma, and ocular coherence tomography parameters in the UK Biobank
Clinical Prediction Models for Primary Prevention of Cardiovascular Disease: Validity in Independent Cohorts
Associations and prognostic accuracy of electrolyte imbalances in predicting poor COVID-19 outcome: a systematic review and meta-analysis of 28 observational studies
Genetic evidence for causal relationships between age at natural menopause and the risk of aging-associated adverse health outcomes
Multispectral Imaging for MicroChip Electrophoresis Enables Point-of-Care Newborn Hemoglobin Variant Screening
Cerebral Organoids Containing an AUTS2 Missense Variant Model Microcephaly
Physiological pattern of cognitive aging
Patient-specific analysis of bicuspid aortic valve hemodynamics using a fully coupled fluid-structure interaction (FSI) model
Contribution of Mendelian disorders in a population-based pediatric neurodegeneration cohort
Smoking and COVID-19: A two-sample Mendelian randomization study
A novel variant of interest of SARS-CoV-2 with multiple spike mutations is identified from travel surveillance in Africa
Profile of SARS-CoV-2-specific CD4 T cell response: Relationship with disease severity and impact of HIV-1 and active Mycobacterium tuberculosis co-infection