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+--- Thread: Biostats - nurden (/showthread.php?tid=846641)
0 - ArchivalUser - 02-24-2018
good
0 - ArchivalUser - 02-27-2018
A new antiplatelet agent is developed for the prevention of recurrence of stoke. In a large randomized clinical trial with equal numbers of men and women, the rates of stroke are lower in patients receiving the new agent than in patients receiving the standard treatment. Results are shown
recurrent stroke rates per 1000 person-years
standard treatment new anti platelet drug
women .12 .04
men .24 .08
overall .18 .06
based on these results, which of the following is the relative risk reduction in women?
a.8%
b.12%
c.16%
d.33%
e.50%
f.62%
g.67%
h.75%
0 - ArchivalUser - 02-28-2018
g.
0 - ArchivalUser - 03-06-2018
why g? can you explain the answer please?
0 - ArchivalUser - 03-07-2018
33%
0 - ArchivalUser - 03-12-2018
67%
0 - ArchivalUser - 03-13-2018
ANSWER: g
relative risk for women: .12 in standard to .04 for treatment
RR= Exposed(treatment) event Rate DIVIDED by (Control)Unexposed event Rate====== .04/.12--->= 1/3
Relative risk reduction: RRR= 1-RR
1-(1/3)= .6666666666666666666666666666666666666
... if my understanding is correct.
0 - ArchivalUser - 03-14-2018
step 1 biostats questions are also useful
0 - ArchivalUser - 03-15-2018
thank you visceralpleura
0 - ArchivalUser - 03-15-2018
g is the correct answer