Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: A comparison of regression discontinuity and propensity score matching to estimate the causal effects of statins using electronic health records
Studying the course of Covid-19 by a recursive delay approach
Poor neutralization and rapid decay of antibodies to SARS-CoV-2 variants in vaccinated dialysis patients
Preterm birth rates during the COVID-19 lockdown in Queensland Australia
On the Environmental Determinants of COVID-19 Seasonality
Comparison of BinaxNOW TM and SARS-CoV-2 qRT-PCR detection of the Omicron Variant from Matched Anterior Nares Swabs
Use of Low-Dose Decitabine with or without Tyrosine Kinase Inhibitors in Advanced Phase Chronic Myelogenous Leukemia: A Systemic Review and Metaanalysis
Variations of the quality of care during the COVID-19 pandemic affected the mortality rate of non-COVID patients with hip fracture
Development and validation of a multimodal neuroimaging biomarker for electroconvulsive therapy outcome in depression: a multicenter machine learning analysis
Comprehensive Quantitative Evaluation of Inter-observer Delineation Performance of MR-guided Delineation of Oropharyngeal Gross Tumor Volumes and High-risk Clinical Target Volumes: An R-IDEAL Stage 0 Prospective Study
Germline variants associated with immunotherapy-related adverse events
Estimation of Daily Reproduction Rates in COVID-19 Outbreak.
Topographical differences in white matter hyperintensity burden and cognition in aging, MCI, and AD
Characterization of A Novel Autoimmune Encephalitis Associated Antibody against CRMP2
In vivo delayed clearance of Plasmodium falciparum malaria independent of kelch13 polymorphisms and with escalating malaria in Bangladesh.
An evaluation of community-based comprehensive vision care for the ageing population
The tumor suppressor Adenomatous polyposis coli modulates T lymphocyte migration
Provisional research criteria for the behavioral variant of Alzheimer disease: A systematic review and meta-analysis
The effect of focused muscle contraction therapy on chronic pain and Brodmann Area activity in former National Football League players
Symptomatic, Presymptomatic, and Asymptomatic Transmission of SARS-CoV-2
Validation of diagnostic nomograms based on CE-MS urinary biomarkers to distinguish clinically significant prostate cancer
Monitoring tubular epithelial cell damage in AKI via urine flow cytometry
Overcoming the pitfalls of NGS-based molecular diagnosis of Shwachman-Diamond syndrome
SARS-CoV-2 Omicron has extensive but incomplete escape of Pfizer BNT162b2 elicited neutralization and requires ACE2 for infection
Quality Assurance Assessment of Diffusion-Weighted and T2-Weighted Magnetic Resonance Imaging Registration and Contour Propagation for Head and Neck Cancer Radiotherapy
Liver Echinococcosis Lesion Classification Tool by Deep Learning: development, deployment, and validations