Displaying 1 result from an estimated 1 matches for "denomniator".
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denominator
2006 May 11
1
Mixed Model notation SAS -> R
...ted /subject=subj type=ar(1);
I tried something like this in R:
mixed <- lme(y ~ a + b + c + a*b + a*c + b*c + a*b*c,
random = ~ 1 | subj,
correlation = corAR1(form = ~ 1 | subj)
na.action = na.omit, method = "ML")
When I do an anova(mixed) the denomniator DFs do not compare to the ones
SAS uses in calculating Type III results, In R a common, quite high
(close to the total number of observations) denominator DF value is used
for all effects, while SAS seems to calculate the DFs directly from the
number of class categories. So obviously I have to spe...