（ver. 0.9b）programmed by T. Fukuoka
How to do it: At first, please
set true event rate (mortality rate, admission rate or
mobidity rate etc.) of two treatment modalities (ordinary
one and new one). Then you can plan a clinical trial
(patient number of each group). Push the "Start" button
and you can see a result of you trial.
How to enjoy: 1. Set event
rates according to a acutual clinical trial and push the
button several times.
How to enjoy: 2. Set same event
rates (Say, 0.2) and push the button several times to see
the variation of the results.
Put the number between 0 and 1.
Event rate of ordinary
Event rate of new
morbidity or admission rate.
Decide the patient number of
Caution：If you set number more than
100, it will take several seconds. If you are
willing to wait several minutes, you can set
patient number more than 1000.
Patient number of ordinary
Patient number of new
Push the start bottun, and you
will find the result.
If you push it again, you will get
The event rate of ordinary group is
The event rate of new treatment
group is .
Absolute risk reduction is
Risk ratio is .
Absolute risk reduction is the acutual
difference of event rates between the groups. If the
effect of the new treatment is same, it will be
Risk ratio is the fraction of event
rates of the groups. If the effect of the new treatment
is same, it will be "1".