Displaying 3 results from an estimated 3 matches for "corfixed".
2009 Oct 21
1
Question on mixed effect models with LME
Good afternoon
Using R 2.9.2 on a machine running Windows XP
I have a longitudinal data set, with data on schools and their test scores over a four year period. I have centered year, and run the following
m1.mod1 <- lme(fixed = math_1 ~ I(year-2007.5)*TFC_,
data = long,
random = ~I(year-2007.5)|schoolnum,
na.action = "na.omit")
where
2004 Aug 19
0
NLME: Holding constant the across group correlational structure of the fixed effects in nlme
...data=Grouped.Data,
+ fixed=Asym + xmid + scal ~ Est.LC,
+ random=Asym + xmid + scal ~ 1,
+ start=c(105,-5, 4,-5,30,-5))
> Sum.Result.NLME <- summary(Result.NLME)
>
> round(Sum.Result.NLME$corFixed, 2)
Asym.(Intercept) Asym.Est.LC xmid.(Intercept) xmid.Est.LC scal.(Intercept) scal.Est.LC
Asym.(Intercept) 1.00 -0.93 0.55 -0.51 0.50 -0.46
Asym.Est.LC -0.93 1.00...
2005 Apr 11
1
extracting correlations from nlme
Hi,
I would like to know how (if) I can extract some of the information from
the summary of my nlme.
at present, I get a summary looking something like this:
> summary(fit.nlme)
Nonlinear mixed-effects model fit by maximum likelihood
Model: MLKYLD ~ W4(DIM, logA, B, C)
Data: ADHIS.x0
AIC BIC logLik
265314 265401.6 -132647
Random effects:
Formula: list(logA ~ 1 , B ~