Displaying 4 results from an estimated 4 matches for "visual0".
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2006 Mar 07
1
lme and gls : accessing values from correlation structure and variance functions
...Also, when i tried accessing these values i obtained the following
bm$modelStruct
corStruct parameters:
[1] -1.394879
varStruct parameters:
[1] 0.5680815
What do these values represent.
Thanks in advance..
Pryseley
sample data:
RowNames Trial subject VISUAL0 TRT VISUAL24 VISUAL52 TREAT outcome endpoint trt
4 1 1003 65 4 65 55 2 0 1 1
8 1 1007 67 1 64 68 2 -3 1 -1
12 2 1110 59 4 53 42 2 -6 1 1
14 2 1111...
2006 Mar 03
1
Help with lme and correlated residuals
...mula ? If so, is there a way of getting pass this restriction ?
In essence, I wish to know how to fit a linear mixed model with correlated residuals (based on a variable in my model) and to obtain the correlation matrix.
Best regards
Pryseley
Sample data:
RowNames Trial subject VISUAL0 TRT VISUAL24 VISUAL52 TREAT outcome endpoint trt
4 1 1003 65 4 65 55 2 0 1 1
8 1 1007 67 1 64 68 2 -3 1 -1
12 2 1110 59 4 53 42 2 -6 1 1
14 2 1111...
2006 Mar 02
0
Help with lme code
...ly inform me how to correct this code.
Does this imply that the grouping factor in the correlation formula must be the same grouping factor in the random formula ? If so, is there a way of getting pass this restriction ?
Best regards
Pryseley
Sample data:
RowNames Trial subject VISUAL0 TRT VISUAL24 VISUAL52 TREAT outcome endpoint trt
4 1 1003 65 4 65 55 2 0 1 1
8 1 1007 67 1 64 68 2 -3 1 -1
12 2 1110 59 4 53 42 2 -6 1 1
14 2 1111...
2006 Mar 08
0
survival
...Also, when i tried accessing these values i obtained the following
bm$modelStruct
corStruct parameters:
[1] -1.394879
varStruct parameters:
[1] 0.5680815
What do these values represent.
Thanks in advance..
Pryseley
sample data:
RowNames Trial subject VISUAL0 TRT VISUAL24 VISUAL52 TREAT outcome
endpoint trt
4 1 1003 65 4 65 55 2 0 1
1
8 1 1007 67 1 64 68 2 -3 1
-1
12 2 1110 59 4 53 42 2 -6 1
1
14 2 1111 64...