Why Mixed Reviews…

Posted on 9 March 2007

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Back in 2007, when I started learning Mixed Effect Modeling using SAS PROC MIXED I kept repeating in my head the phrase “mixed reviews”, as that was what I felt to write about using multilevel modeling for clustered data. I am still using mixed effects (a.k.a., HLM or multilevel modeling) to analyse data, particularly longitudinal outcome. I still have “mixed feelings” about the methodology. But as the saying goes, “when you are hammer everything looks like a nail”. I constantly see mixed modeling as the way to go, and in most instances it is indeed.

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