a study is done to determ. if raloxifene will decrease the insidence of vertebral fracture in post menopausal women.
raloxifen placebo N of women in sudy group 2557 2576 N of vertebral fractures 138 260 (5.4% ) ( 10.1%) how many women nee to be treated to prevent 1 vert fracture
a. 100/ 5.4 = 18.5 b. 100 / 10.1 =10 c. 100/ (10.1 + 5.4)=6.5 d. 100 / (10.1 - 5.4)=21 e.100 / (10.1 x 5.4)=2
SmokyWaters Forum Elite
Topics: 6 Posts: 458
01/20/08 - 04:02 AM
#2
ITS D
NNT = 1/ARR
ARR (ABSOLUTE RISK REDUCTION) = RISK OF PLACEBO - RISK OF RALOXIFENE GROUP
=10.1%-5.4%
SO 1/(.101-.054) OR 100/(10.1-5.4)
KHILADI420 Forum Newbie
Topics: 4 Posts: 52
01/25/08 - 10:02 PM
#3
guys know this concept two questions with similar info came on my exam.
antidepressant Forum Guru
Topics: 29 Posts: 563
01/28/08 - 11:14 AM
#4
i thought so too. they marked it E, which is not correct. thank you guys.
___________________ Step 1 can not defeat me!!!!!!!!
Ig F Forum Elite
Topics: 3 Posts: 439
05/21/08 - 04:02 AM
#5
NNT=1/ARR....where ARR=placebo group-exposed group.... D....... ___________________ i m not perfect but i wanna get close to it......
