Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: An international comparison of age and sex dependency of COVID-19 Deaths in 2020 - a descriptive analysis
Predictors of longitudinal cognitive ageing from age 70 to 82 including APOE e4 status, early-life and lifestyle factors
Rapid health evaluation in migrant peoples in transit through Darien, Panama: Protocol for a multi-method qualitative and quantitative study
The REinfection in COVID-19 Estimation of Risk (RECOVER) study: Reinfection and serology dynamics in a cohort of Canadian healthcare workers.
A statistical genomics framework to trace bacterial genomic predictors of clinical outcomes in Staphylococcus aureus bacteraemia
Effect of Eight-Week Online Cognitive Training in Parkinson's Disease: A Randomized Controlled Trial
Public attitudes to COVID-19 vaccines: A qualitative study
PDGRFA-mutant gastrointestinal stromal tumours (GISTs) in Eastern England: clinicopathological features and outcomes of 50 patients diagnosed between 2008-2021
Physical, cognitive and mental health impacts of COVID-19 following hospitalisation: a multi-centre prospective cohort study
Fatigue in perinatal stroke is associated with the functional connectivity
Associations of antidepressants and antipsychotics with lipid parameters: Do CYP2D6/CYP2C19 genes play a role? A UK population-based study.
The global distribution of COVID-19 vaccine: The role of macro-socioeconomics measures
Pulsed electromagnetic fields can prevent bone loss and improve balance function in older adults with primary osteoporosis: a systematic review and meta-analysis
COVID-19 International Border Surveillance Cohort Study at Toronto's Pearson Airport
Functional proteomic profiling links deficient DNA clearance to mortality in patients with severe COVID-19 pneumonia
Predictive and Causal Analysis of No-Shows for Medical Exams During COVID-19: A Case Study of Breast Imaging in a Nationwide Israeli Health Organization
Immunogenicity and safety of inactivated whole virion Coronavirus vaccine with CpG (VLA2001) in healthy adults aged 18 to 55: a randomised phase 1 /2 clinical trial
Inequalities in access to paid sick leave among workers in England and Wales
Analysis of 200,000 exome-sequenced UK Biobank subjects implicates genes involved in increased and decreased risk of hypertension
COVID-19 Prevention Beliefs and Practices in College Students
Comparison of Japanese nurse practitioner-led care and physician trainees-led care on patients' length of stay in a secondary emergency department: A retrospective study
Comparison of Care Utilization and Medical Institutional Death among Older Adults by Home Care Facility Type: A Retrospective Cohort Study in Fukuoka, Japan
An AI-based quantitative home-use framework for assessing fertility and identifying novel hormone trends by recording urine hormones
Early detection of SARS-CoV-2 infection cases or outbreaks at nursing homes by targeted wastewater tracking
In vivo kinetics of SARS-CoV-2 infection and its relationship with a person's infectiousness
Testing Frequency Matters | An Evaluation of the Diagnostic Performance of a SARS-CoV-2 Rapid Antigen Test in United States Correctional Facilities