The page below is a sample from the LabCE course Quality Control. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Specificity Example: Test Results

  • In the pool of 1,000 tested individuals, 600 actually had the condition.
  • The experimental method detected 875 positives, of which 275 were false. Of the 125 negatives detected by the experimental method, 25 were false.
  • The tried and true method detected only 625 positives, 25 of them false. 375 negatives were found as well, of which 50 were false-negatives.
  • The experimental method detected far more positives, but a great number of these were false. The tried and true method, however, did generate more false-negatives than the experimental method.