15:50

USMLE STEP 1 Biostatistics: PREVENTION, THE BOX, LOGIC

27:28

Biostatistics SUMMARY STEP 1 - USMLE The Extra stuff

26:08

USMLE STEP 1, 2CK: BIOSTATS "QUICK REVIEW"

11:15

Sensitivity, Specificity, PPV, NPV

20:38

Study Design - Case-control study, Cross-sectional study, Cohort study (Prospective, Retrospective)