topic Re: Likelihood ratio test confidence interval in New SAS User

Likelihood ratio test confidence interval

keldel — Thu, 02 Sep 2021 13:52:39 GMT

I would like to obtain the confidence interval from the likelihood ratio test (G^2) for a binomial function with n=10000 and x=50 (the number of yes responses).

options ls=72;
data conditionprevalence;
input condition count; 
cards;
1 3
2 997
;
run;
proc freq;
weight count;
tables condition/cmh chisq;
run;

I know this isn't right since I am not getting a confidence interval and this doesn't seem to be the LRT. Thank you for any insight.

@jimbarbour

Re: Likelihood ratio test confidence interval

keldel — Thu, 02 Sep 2021 13:56:55 GMT

Sorry the sample code I provided had the wrong values. I had cards

1 50

2 9950

Re: Likelihood ratio test confidence interval

Watts — Thu, 02 Sep 2021 15:12:50 GMT

See the BINOMIAL(CL=LIKELIHOODRATIO) option in the TABLES statement (and details in the documentation section Likelihood Ratio Confidence Limits under Binomial Proportion).