ECG was performed on a total of 700 subjects with complaints of acute chest pain. Of these, 520 patients had myocardial infarction. Calculate the positive predictive value of ECG is:rnrn rnrnrnrnMYOCARDIAL INFARCTIONrnrn rn rn rnrnrnrnECGrnrnrnPRESENTrnrnrnABSENTrnrnrnTOTALrnrnrnrnrnPOSITIVErnrnrn416rnrnrn9rnrnrn425rnrnrnrnrnNEGATIVErnrnrn104rnrnrn171rnrnrn275rnrnrnrnrnTOTALrnrnrn520rnrnrn180rnrnrn700rnrnrnrnrnrn
Correct Answer: 98%
Description: Positive predictive value=true positive/(true positive+ false positive) 416/425 x 100= 98% Ref: Medical biostatistics, 1st edition pg: 201
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