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#1
10-15-2012
 USMLE Forums Veteran Steps History: Not yet Posts: 234 Threads: 120 Thanked 11 Times in 10 Posts Reputation: 21
Absulote risk reduction, NNT and NNH

Can someone please explain how to look for absulote risk reduction, NNT and NNH. And say your given the RR to be 4

#2
10-16-2012
 USMLE Forums Veteran Steps History: 1+CK+CS Posts: 225 Threads: 13 Thanked 326 Times in 105 Posts Reputation: 336

There is a UW question that explains NNT and ARR

Example: If we compare drug X with drug Y in the long term reduction of diabetic nephropathy ....

If 10% patients using drug X had diabetic nephropathy

And 20% of patients using drug Y had diabetic nephropathy ...

Then Drug X has a ARR = 0.2-0.1 = 0.1

NNT = 1/ARR = 10
 The above post was thanked by: Rani Kumar (10-16-2012)

 Tags Biostatistics-Epidemiology

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