Usmle biostats - Study guides, Class notes & Summaries

2 x 2 table Correct Answer Top vs Side: Disease vs Exposure Reality vs Test Result A,B,C,D (Left to Right, Top to Bottom) Sensitivity Correct Answer A/(A+C) or TP/(TP+FN) Specificity Correct Answer D/(D+B) or TN/(TN+FP) PPV Correct Answer A/(A+B) or TP/ (TP+FP) NPV Correct Answer D/(D+C) or TN/ (TN+FN) Relative Risk Correct Answer A/(A+B) / C/(C+D) Use in Cohort Remember: In RR you are looking forward at risk of a disease/outcome in the *exposed vs unexposed groups* ...

USMLE - Biostats.

The main measure of association in case-control study design in which the exposure of people with the disease (cases) is compared to the exposure of those without the disease (controls).Exposure odds ratio __ or external validity pertains to the applicability of study results to other populations (the results of a study in middle-aged woman would not be expected to be applicable to elderly men).Generalizability The __ hypothesis is always the statement of no relationship between the ex...

UWORLD Biostats USMLE Step 2 CK with complete solution

2 x 2 table - Answer - Top vs Side: Disease vs Exposure Reality vs Test Result A,B,C,D (Left to Right, Top to Bottom) Sensitivity - Answer - A/(A+C) or TP/(TP+FN) Specificity - Answer - D/(D+B) or TN/(TN+FP) PPV - Answer - A/(A+B) or TP/ (TP+FP) NPV - Answer - D/(D+C) or TN/ (TN+FN) Relative Risk - Answer - A/(A+B) / C/(C+D) Use in Cohort Remember: In RR you are looking forward at risk of a disease/outcome in the *exposed vs unexposed groups* *risk of disease/outco...

USMLE Step 3 Biostats: Formulas

Biostats usmle step 1 Questions and Answers

UWORLD Biostats USMLE Step 2 CK (Complete Solution)BEST FOR 2022

All of the biostats you need to know for USMLE STEP 1 exam !! High yield

USMLE Step 3 Biostats: FormulaS BEST FOR 2022