I am wondering if anyone here could provide some insight as to the correct/best procedure to use for a repeated repeated measures design. I know how to handle one set of repeated measures (i.e. if I collecte data on a subject on multiple days over the course of a longitudinal study. But I am not sure what is the proper procedure for handling a situation in which I have multiple layers of repeated measures within a subject (for example, if I collected data on a given subject every 4 hours over a 24-hr period and then repeated that same data collection protocol on multiple days over the course of a longitudinal study). Any input here - code, link, point me to a procedure that I can read up on - anything would be helpful.
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