Doing HLM and Time-series analysis at the same time using GLIMMIX

HLM (multilevel models) and econometric analyses (e.g., time series analysis, ARIMA, etc.) are treated as different approaches (the goal of which is to deal with data dependency problem), they can be implemented in the same model via. SAS PROC GLIMMIX.  However, I believe doing this is computationally demanding and models may not converge.

For detailed discussion of this topic, see p.28 of my HLM manual:

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