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- Surveylogistic and 95% CI's for odds ratios

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11-07-2011 12:56 PM

I'm wondering if it's possible to calculate anything other than a Wald 95% confidence limits using the surveylogistic procedure. I'm using the Likelihood ratio test to decide whether to retain or remove variables from a model but am reporting the CI's using Wald. Sometimes these aren't consistent,and I'd prefer to report the LRT

Here is my code:

proc surveylogistic data=example;

class a (ref='1');

model z (event=1) = a b c ;

strata strata;

weight weight;

run;

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11-07-2011 05:16 PM

Try adding an ALPHA= to the PROC statement with an alpha appropriate for the different confidence limit you would be interested in. The default is ALPHA=.05, so use ALPHA=.10 if you want 90% limits. This should affect all test and limits produced.