Prep for USMLEPrep for USMLE
         Forum      |     Resources New Posts   |   Register   |   Login

 Epidemiology question..  

Post Reply  
  • 0/5
  • 1
  • 2
  • 3
  • 4
  • 5

Author3 Posts

55 year old man visits his physician with urinary complaints. Examination finds a 1-cm nodule on his prostate gland. Physician orders a PSA serum test. By common standards, a PSA more than 4ng/ml is considered abnormal. Using this standard, this test has a sensitivity of 80% and specificity of 90%. A recent epidemiologic article found that in a cross-sectional study, 10% of men of this age group have prostate cancer. The result on the patient's PSA is 7ng/ml. What is the best estimate of the likelihood that this man actually has prostate cancer?

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




how did u calculate?????

Bookmark and Share

This thread is closed, so you cannot post a reply.

Login or Register to post messages

show Similar forum topics

Epidemiology Question
epidemiology question
Settle a few epidemiology numbers
show Related resources

Conrad Fischer's Internal Medicine Question Book
NMS Clinical Epidemiology and Biostatistics
Epidemiology, Biostatistics & Preventive Medicine

Advertise | Support | Premium | Contact