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Step 1 Biostats Formulas High Yield Most Common

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denniskwinn's version from 2015-04-26 02:17

Biostats 2x2 table

KEBALMNDFCOGHPQIJRST

Table answers

Question Answer
AA; True Positives
BB; False Positives
CC; False Negatives
DD; True Negatives
EA + B
FC + D
GA + C
HB + D
IA/(A+C) or 1-C (FN)
JD/(D+C) or 1- B (FP)
KA/(A+B)
L[A/(A+B)]/[C/(C+D)]
MD/(D+C)
N[A/(A+B)] - [C/(C+D)]
OTotal w/ Dz/ Total Pop
P# new cases Dz/Total pop @ risk Dz
Q(A/B)/(C/D)
R[C/(C+D)] - [A/(A+B)]
S1/ARR
T(RR-1)/RR
memorize

Answer Key