Thursday, 14 October 2010

A good formula

Sensitivity (positivity in disease)= TP / TP + FN
Specificity (negativity in health) = TN / TN + FP
Positive predictive value PV+ = TP / TP + FP
Negative predictive value PV- = TN / TN + FN

T True
F False
P Pos
N Neg

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