USMLE STEP 1 EQUATIONS Questions and Answers with Complete Solutions 2024
USMLE STEP 1 EQUATIONS Questions and Answers with Complete Solutions 2024 Sensitivity - ANSSensitivity = TP / (TP + FN) Specificity - ANSSpecificity = TN / (TN + FP) Positive predictive value - ANSPPV = TP / (TP + FP) Negative predictive value - ANSNPV = TN / (TN + FN) Relative risk - ANSRR= (a/[a+b]) / (c/[c+d]) Attributable risk - ANSAR= (a/[a+b]) - (c/[c+d]) Number needed to treat - ANS1/absolute risk reduction Number needed to harm - ANS1/attributable risk Hardy-Weinberg equilibrium - ANSp^2 + 2pq + q^2 = 1 p+q=1 Henderson-Hasselbalch equation - ANSpH = pKa + log [HCO3-] / 0.03PCO2 Volume of distribution - ANSVd = amount of drug in the body/ plasma drug concentration Clea
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