BookmarkSubscribeRSS Feed
user201
Calcite | Level 5

Could anyone help me figure out how to calculate intraclass correlation coefficient for a two-level beta regression model? I am using proc glimmix and dist=beta link=logit options. The output doesn't produce variance of level-1 residuals, which is typically used to calculate ICC. Is there a way to calculate that variance? Could the following formula be used in this case (found it in this document)?

user201_0-1641955872373.png

Thank you!

2 REPLIES 2
SteveDenham
Jade | Level 19

Take a look at the example https://documentation.sas.com/doc/en/pgmsascdc/9.4_3.4/statug/statug_glimmix_examples24.htm 

 

The variance components needed to calculate an ICC appear in the Covariance Parameter Estimates table in the output, which has the ODS table name CovParms.

 

SteveDenham

hackathon24-white-horiz.png

2025 SAS Hackathon: There is still time!

Good news: We've extended SAS Hackathon registration until Sept. 12, so you still have time to be part of our biggest event yet – our five-year anniversary!

Register Now

What is ANOVA?

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.

Discussion stats
  • 2 replies
  • 1123 views
  • 1 like
  • 3 in conversation