Which of the following statements are true? 1. Due to increasing mammography there occurs over diagnosis of breast carcinoma 2. Colon cancer screening is done by digital rectal examination 3. Oral cancer screening is done by visual inspection 4. Cervix cancer screening is done by a pap smear
A1,2,3,4
B4 only
C1,3,4
D2,3,4
Which of the following statements about screening for disease is false?
ATime consuming
BArbitrary and final
CRarely a basis for starting treatment without further confirmation
DDone on apparently healthy people
What is the correct formula for calculating the positive predictive value (PPV) of a screening test?
ATrue positives / (True positives + False negatives)
BFalse positives / (False positives + True negatives)
CTrue positives / (True positives + False positives)
DTrue negatives / (True negatives + False negatives)
+ 7 more in the PDF
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