• Sensitivity (also called the true positive rate, or the recall in some fields) measures the proportion of positives that are correctly identified as such (e.g., the percentage of sick people who are correctly identified as having the condition).
  • Specificity (also called the true negative rate) measures the proportion of negatives that are correctly identified as such (e.g., the percentage of healthy people who are correctly identified as not having the condition).

Sensitivity deals with how acurate the test considering false negatives effect.

Specificity deals with false positive.

 Test result TRUETest result FALSE
Is TrueCorrectIncorrect - False Negative
Is FalseIncorrect - False PositiveCorrect