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Table 2 True disease status and Test 2 results in a single test trial design

From: Estimates of sensitivity and specificity can be biased when reporting the results of the second test in a screening trial conducted in series

   True Disease Status
   + -
Test 2 + p D TP(2) (1 - p D )FP(2)
  - p D FN(2) (1 - p D )TN(2)