<prompt> Which of the following isare true about a screening test ?Sensitivity is 1 - False positive rateSensitivity is 1 - False negative ratePost-test probability is pre-test probability multiplied by prevalenceNone of the above  <response>: Ans. is d i.e., None of the above False positive rate 1-specificity or Specificity 1-false positive rate False negative rate -- 1-sensitivity or Sensitivity 1-false negative rate Post test probability Pretest probability Likelihood ratio o Predictive value depends upon prevalance. 