Predictive value indicating positive test in a screening modality is calculated by:
Correct Answer: TP/TP+FP*100
Description: Ans. (a) TP/TP+FP*100SENSITIVITYTP------TP+ FNx 100PREDICTIVE VALU OF A NEGATIVE TESTTN------TN+FNx 100SPECIFICITYTP------FP+ TNx 100% OF FALSE NEGATIVESFN------TP+ FNx 100PREDICTIVE VALU OF A POSITIVE TESTTP------TP+ FPx 100% OF FALSE POSITIVESTN------FP+ TNx 100
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