Prepare for the USMLE Step 1 exam with a comprehensive crash course on biostatistics based on First Aid 2020. Dive into essential topics including study designs, diagnostic test evaluation, risk quantification, prevalence, incidence, precision, accuracy, ROC curves, bias and study errors, statistical distributions, hypothesis testing, confidence intervals, and various statistical tests and correlation coefficients. Master key biostatistical concepts and techniques crucial for success in the USMLE Step 1 exam through this intensive 2.5-hour video series.