Skip to main content

Table 1 Two-by-two table for study results

From: New patient-oriented summary measure of net total gain in certainty for dichotomous diagnostic tests

  

Gold Standard

  

S+

S-

Clinical Test

T+

a = True Positive

b = False Positive

 

T-

c = False Negative

d = True Negative

 

Total

a+c

b+d

  1. 1.1 sensitivity = P(T+|S+) =
  2. 1.2 specificity = P(T - |S-) =
  3. 1.3 Positive Likelihood Ratio = PLR =
  4. 1.4 Negative Likelihood Ratio = NLR =
  5. Error terms for the study population:
  6. α = false positive rate = fpr =
  7. β = false negative rate = fnr =