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#1
07-31-2012
 USMLE Forums Master Steps History: Step 1 Only Posts: 537 Threads: 80 Thanked 342 Times in 138 Posts Reputation: 374
Prevalence, Sensitivity, Specificity Biostat Question!

A 55 yo man visits his primary care physician with .................................PSA is 7ng/ml. A recently published article found 10 percent of men in his age group have prostate cancer. sensitivity 80% specificity 90% what is your best estimate of the likelihood that this man actually has prostate ca?

a) 13%
b) 25%
c) 36%
d) 47%
e) 58%
f) 69%
g) 72%
h) 81%

please explain me in detail ..

#2
07-31-2012
 USMLE Forums Scout Steps History: Step 1 Only Posts: 50 Threads: 5 Thanked 59 Times in 23 Posts Reputation: 69

This question was discussed before here
Calculating the Positive Predictive Value?
 The above post was thanked by: sonu.agarwall (07-31-2012)

 Tags Biostatistics-Epidemiology, Step-2-Questions

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