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Table 3 True disease status and Test 1 results.

From: Bias in trials comparing paired continuous tests can cause researchers to choose the wrong screening modality

   True Disease Status
   + -
Test 1 + r [1 - Φ (x - μ C1)] (1 - r) [1 - Φ (x - μ N1)]
  - r Φ (x - μ C1)] (1 - r) Φ (x - μ N1)
  1. Test 1 is + if the score on Test 1 is greater than x.