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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!

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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

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