Hello,
For research purposes, I would like to know the method SAS uses to perform an inverse prediction of confidence interval in the context of a nonlinear model. For exemple for a 4 parameter logistic model(dose response model), whith which method SAS obtains by inverse prediction, the confidence interval of a concentration knowing the corresponding response value? I could not find that information in the SAS documentation.
Thank you.
Inverse confidence limits in the context of a binary response model (logistic or probit) can be done using the INVERSECL option in PROC PROBIT. The method used is described in the "Details: Inverse Confidence Limits" section of the PROBIT documentation.
Thank you! That helps to find that the methods are there for PROBIT. Since what I am interested in, are growth curves like the 4 parameter model, i will probably write a code with PROC IML to find my inverse confidence interval.
Thank you.
Are you ready for the spotlight? We're accepting content ideas for SAS Innovate 2025 to be held May 6-9 in Orlando, FL. The call is open until September 25. Read more here about why you should contribute and what is in it for you!
ANOVA, or Analysis Of Variance, is used to compare the averages or means of two or more populations to better understand how they differ. Watch this tutorial for more.
Find more tutorials on the SAS Users YouTube channel.