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 USMLE Forums Incidence Calculation; What's the denominator?

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#1
07-30-2012
 USMLE Forums Master Steps History: Step 1 Only Posts: 537 Threads: 80 Thanked 370 Times in 148 Posts Reputation: 402
Incidence Calculation; What's the denominator?

Have a doubt in Kaplan CK Notes epidemiology review question on page 112. Incidence should be calculated with denominator having people at risk. Isn't it?
Can anyone help me out with the question 8.?

#2
07-30-2012
 USMLE Forums Master Steps History: Step 1 Only Posts: 537 Threads: 80 Thanked 370 Times in 148 Posts Reputation: 402

I am unable to post question as it as a diagram
#3
07-31-2012
 USMLE Forums Master Steps History: Step 1 Only Posts: 537 Threads: 80 Thanked 370 Times in 148 Posts Reputation: 402

Anyone

#4
07-31-2012
 USMLE Forums Veteran Steps History: Not yet Posts: 270 Threads: 34 Thanked 239 Times in 126 Posts Reputation: 249

yes people at risk.

This would be the total population minus the people who already have the disease.
#5
07-31-2012
 USMLE Forums Master Steps History: Step 1 Only Posts: 537 Threads: 80 Thanked 370 Times in 148 Posts Reputation: 402

But isnt the answer given wrong?
#6
08-01-2012
 USMLE Forums Veteran Steps History: Not yet Posts: 270 Threads: 34 Thanked 239 Times in 126 Posts Reputation: 249

I can't look at it, don't have the book.

I was just replying to what should be in the denominator. Rarely there are errors in textbooks.

 Tags Biostatistics-Epidemiology

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