Programming the statistical procedures from SAS

Identifying the quadratic equation in a growth curve using proc mixed

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New Contributor P20
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Identifying the quadratic equation in a growth curve using proc mixed

Hi all, I was wondering if someone could help me. I'm trying to identify which estimates to use from my output to plug into a quadratic equation to describe the curve. Also should these be standardized? I used the estimates for fixed effects but they don't describe what the curve is doing (when i plug in an x it does not describe the y on the curve).

If you can point me to a resource that would be great. I'm just 2 pages deep into my google foo with little luck finding instructions on how to interpret the output in terms of a quadratic equation.

Thanks.

 

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