Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Approbation of Self-directed Learning by first year medical students: a mixed method study
Effect of remedial teaching on academic performance of poorly performing students in Pharmacology
Mental Health Concerns Related to the COVID-19 Pandemic on Twitter in the UK
Background rates of five thrombosis with thrombocytopenia syndromes of special interest for COVID-19 vaccine safety surveillance: incidence between 2017 and 2019 and patient profiles from 25.4 million people in six European countries
Seroreactivity to SARS-CoV-2 in individuals attending a university campus in Bogota Colombia
NFL COVID-19 Return to Sport Injury Prevalence Comparison
Maternal depression and child human capital: A genetic instrumental-variable approach
Seroprevalence, waning, and correlates of anti-SARS-CoV-2 IgG antibodies in Tyrol, Austria: Large-scale study of 35,193 blood donors conducted between June 2020 and September 2021
Cross-classification between self-rated health and health status: longitudinal analyses of all-cause mortality and leading causes of death in the UK
Simple Laboratory and Clinical Parameters as Predictor for Electrocardiographic Abnormalities Among Hospitalized Patients with Chronic Kidney Disease: A Cross-Sectional Study
Estimating population level disease prevalence using genetic risk scores
Sharing positive changes made during COVID-19 national lockdown: a multi-method co-production study
Evaluation of commercially available high-throughput SARS-CoV-2 serological assays for serosurveillance and related applications
Evidence for lower threshold for diagnosis of hypertension: inferences from an urban-slum cohort in India
Year-long COVID-19 infection reveals within-host evolution of SARS-CoV-2 in a patient with B cell depletion
Prevalence of uncoupling protein one genetic polymorphisms and their relationship with cardiovascular and metabolic health
Cancer risk algorithms in primary care: can they improve risk estimates and referral decisions?
Positive attribute framing increases COVID-19 booster vaccine intention for unfamiliar vaccines
Evidence for Causal Effects of Smoking Initiation and Alcohol Consumption on Substance Use Outcomes
Estimating the prevalence of discrepancies between study registrations and publications: A systematic review and meta-analyses
Anticoagulants and Antiplatelets in COVID-19: Impact on Survival and Thromboembolism Development
Expression of ACE2 receptor, soluble ACE2, Angiotensin I, Angiotensin II and Angiotensin (1-7), is modulated in COVID-19 patients.
Risk factors for hospitalization, disease severity and mortality in children and adolescents with COVID-19: Results from a nationwide German registry
Statistical modeling for quality risk assessment of clinical trials: follow-up at the era of remote auditing
Paternal body mass index before conception associated with offspring's birth weight in Chinese population: a prospective study
ASSESSMENT OF PERFORMANCE AND IMPLEMENTATION CHARACTERISTICS OF RAPID POINT OF CARE SARS-CoV-2 ANTIGEN TESTING IN KENYA