What is the lmer/nlme equivalent of the REPEATED subcommand in SPSS's MIXED procedure?
I suspect that /REPEATED is just the way to specify random effects, so random=~factor1|participant in nlme. (I'm also guessing that the intercept in both the fixed and the random effects is implicit.) Phillip
On 20/03/18 09:00, Maarten Jung wrote:
Dear list,
I came across a SPSS syntax like this
MIXED value BY factor1
/CRITERIA=CIN(95) MXITER(100) MXSTEP(10) SCORING(1)
SINGULAR(0.000000000001)
HCONVERGE(0, ABSOLUTE) LCONVERGE(0, ABSOLUTE) PCONVERGE(0.000001,
ABSOLUTE)
/FIXED=factor1 | SSTYPE(3)
/METHOD=REML
/REPEATED=factor1 | SUBJECT(participant) COVTYPE(UN).
and struggle to find an equivalent lmer/nlme (or R in general) formulation
for this kind of models.
Does anybody know how to convert the REPEATED subcommand into R code?
Please note that I asked the question on Stack Overflow about two month ago:
https://stackoverflow.com/questions/48518514/what-is-the-lmer-nlme-equivalent-of-the-repeated-subcommand-in-spsss-mixed-proc
Best regards,
Maarten
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