Programming the statistical procedures from SAS

Proc GLIMMIX nested HLM where nested group is not mutually exclusive

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Proc GLIMMIX nested HLM where nested group is not mutually exclusive

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Hi,

 

I'm looking to model the random effects of a nested three level hospital and hospital collaboratives on patient mortality.

 

The structure is: Patients nested within hospitals and Hospitals are nested within collaboratives .  My concern is that a hospital can be in multiple collaboratives because collaboratives classification is not mutually exclusive.  For example there are six collaboratives groups: A, ,B, C, D, E, F and a hospital can be in a collaborative A and also collaborative B. 

 

Should I code collaborative groups as dummy variables A through F (0,1) and use that as nesting variables for hospitals?

 

I couldn't find any clear literature that addresses my issue.  Any help or guidance to relevant literature would be appreciated.

I will be using SAS 9.4. 

Thanks in advance.

 

 

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