What is the positive predictive value

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Problem

A comparison of clinically screened versus autopsy-confirmed gastric and peptic ulcer was performed in 10,000 consecutive deceased patients. One hundred and fifty of the deceased patients screened positive for ulcer while 300 of them were confirmed positive for ulcer according to the autopsy findings. One hundred and seventy of the deceased patients who confirmed positive for ulcer according to the autopsy findings, screened negative for ulcer on the screening test.

1) What is the specificity.
2) What is the positive predictive value?
3) What is the negative predictive value? Get the instant assignment help.
4) How many false negatives were identified according to the screening test?

Reference no: EM133871638

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