Hi,
I got adjusted Age groups odds ratios for 4 categories of age and my response variable is Yes or No.
Here it shows People in higher Age categories have lower odds showing less disease.
Now, I would like show that the trend across these Age categories is linear and significant.
I was told that I can use Trend test which gives a P value for all categories of Age.
Can someone suggest how to do this in SAS?
Here are two links among many
http://www.biostat-edu.com/files/SAS-Chapter10.pdf
http://support.sas.com/documentation/cdl/en/procstat/63104/HTML/default/viewer.htm#procstat_freq_sect032.htm
Yes got it! Normally Proc freq procedure shows how to do trend test directly between response variable and Categorical variable, Say in my case
Proc freq data=Clini;
Tables Disease_Status*Age_Category/Trend;
Run;
But can we do it for model derived Odds ratios of Age categories and Disease (Yes or no) ?
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