Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Clinical Risk Factors for COVID-19 related Severe Outcome
A national cohort study of COVID-19 in-hospital mortality in South Africa: the intersection of communicable and non-communicable chronic diseases in a high HIV prevalence setting
Safety and efficacy of Pulmonary physiotherapy in hospitalized patients with severe COVID-19 pneumonia (PPTCOVID): A prospective, randomised, single-blind, controlled trial
Machine Learning for Real-Time Aggregated Prediction of Hospital Admission for Emergency Patients
Social, economic, and environmental factors influencing the basic reproduction number of COVID-19 across countries
Direct and indirect mortality impacts of the COVID-19 pandemic in the US, March 2020-April 2021
Recruitment of Older African Americans in Alzheimers Disease Clinical Trials Using A Community Based Research Approach
The SARS-CoV-2 infection among students in the University of Porto: a cross-sectional study
HBA Copy Number and Kidney Disease Risk among Black Americans: a Longitudinal Cohort Study
Safety, Immunogenicity, and Efficacy of a COVID-19 Vaccine (NVX-CoV2373) Co-administered With Seasonal Influenza Vaccines
Bone health risk assessment in a clinical setting: an evaluation of a new screening tool for active populations
Predicting brain amyloid-β PET phenotypes with graph convolutional networks based on functional MRI and multi-level functional connectivity
Perceptions and experiences of rare diseases among General Practitioners: an exploratory study
Method development and characterization of the low molecular weight peptidome of human wound fluids
Parents intention to vaccinate their 5-11 years old children with the COVID-19: vaccine rates, predictors and the role of incentives
Hemodynamic profiles by non-invasive monitoring of cardiac index and vascular tone in acute heart failure patients in the emergency department: external validation and clinical outcomes
Interactions between nuclear and mitochondrial SNPs and Parkinson's disease risk
Auricular Vagus Neuromodulation - A Systematic Review on Quality of Evidence and Clinical Effects
Disentangling heterogeneity of psychosis expression in the general population: sex-specific moderation effects of environmental risk factors on symptom networks
Anatomical Predictors of Left Internal Carotid Artery Catheterization in Transradial Angiography
A six-month periodic fasting reduces microalbuminuria and improves metabolic control in patients with type 2 diabetes and diabetic nephropathy: a randomized controlled study
Chronic Obstructive Pulmonary Disease Does Not Impair Responses to Resistance Training
Sex differences in the genetic regulation of the blood transcriptome response to glucocorticoid receptor activation
Trends in the conduct and reporting of clinical prediction model development and validation: a systematic review
Factors Affecting Guardians' Decision Making on Clinic-based Purchase of Children's Spectacles in Nigeria
Circular RNA detection identifies circPSEN1 alterations in brain specific to Autosomal Dominant Alzheimer Disease