[R-sig-ME] Modeling and Interpretation Question for Interaction in LMER Output.

[Ades, James]

Hi David, what exactly are you referring to when you say that they're comparing different correlation structures?
________________________________
From: David Duffy <David.Duffy using qimrberghofer.edu.au>
Sent: Thursday, June 11, 2020 7:53 PM
To: Ades, James <jades using health.ucsd.edu>; r-sig-mixed-models using r-project.org <r-sig-mixed-models using r-project.org>
Subject: Re: Modeling and Interpretation Question for Interaction in LMER Output.

> The modeling question regards my depiction of time. The amount of elapsed time
> between participants and testing points is not equal equal. Students in the same classroom
> will be measured at equal time points, but while one class might have 4 months
> in between testing, another class might have 7 months.

In lme, AIUI this would be comparing different correlation structures, as per the example for
corCAR1().

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