topic Re: Confidence interval for odds ratio LR statistic in New SAS User

Confidence interval for odds ratio LR statistic

keldel — Thu, 23 Sep 2021 18:54:11 GMT

I would like to compute a 99% confidence interval for the odds ratio based on the likelihood ratio statistic. Here is what I have so far; the output provides a confidence interval for the odds ratio but is this based on the LR statistic?

data vaccine2;
input age reaction count;
cards;
65 5 0
65 1 3752
42 5 4
42 1 11301
;
run;
proc freq;
weight count;
tables age*reaction/ cmh chisq BINOMIAL(CL=LIKELIHOODRATIO) alpha=0.01;
run;

Re: Confidence interval for odds ratio LR statistic

tarheel13 — Thu, 23 Sep 2021 20:26:53 GMT

I'm probably not much help but I do know that you can get profile-likelihood odds ratios out of proc logistic.

Re: Confidence interval for odds ratio LR statistic

Ksharp — Fri, 24 Sep 2021 12:40:09 GMT

proc freq;
weight count;
tables age*reaction/ cmh chisq oddsratio(cl=LIKELIHOODRATIO) alpha=0.01;
run;