Salvatore Enrico Indiogine
2007-May-13 17:51 UTC
[R] confidence intervals on multiple comparisons
Greetings! I am using prop.test to compare 4 proportions to find out whether they are equal. According to the help function you can not have confidence intervals if you compare more than 2 proportions. I need to find an effect size or confidence interval for these proportions. Any suggestions? Enrico -- Enrico Indiogine Mathematics Education Texas A&M University hindiogine a gmail.com
Cody_Hamilton at Edwards.com
2007-May-15 19:51 UTC
[R] confidence intervals on multiple comparisons
Enrico,
prop.test is for testing proportions two at a time. If you want to test
for differences between 4 proportions simultaneously (rather than two at a
time), try a logistic regression model (from which you can get confidence
intervals for each of your groups).
Cody Hamilton, PhD
Staff Biostatistician
Edwards Lifesciences
"Salvatore Enrico
Indiogine"
<hindiogine at gmail To
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at.math.ethz.ch Subject
[R] confidence intervals on
multiple comparisons
05/13/2007 10:51
AM
Greetings!
I am using prop.test to compare 4 proportions to find out whether they
are equal. According to the help function you can not have confidence
intervals if you compare more than 2 proportions.
I need to find an effect size or confidence interval for these proportions.
Any suggestions?
Enrico
--
Enrico Indiogine
Mathematics Education
Texas A&M University
hindiogine at gmail.com
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