Displaying 2 results from an estimated 2 matches for "timet3".
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time3
2008 Apr 14
1
Formula with no intercept
...e), and other is Time with four levels (T1,
T2, T3 and T4). And for the convenience of post-hoc testing I wanted
to consider a model with no intercept for factor Time, so I tried
formula
Group*(Time-1)
However this seems to give me the following terms in the model
GroupMale, GroupFemale, TimeT2, TimeT3, TimeT4, GroupMale:TimeT2,
GroupMale:TimeT3, GroupMale:TimeT4, GroupFemale:TimeT2,
GroupFemale:TimeT3, GroupFemale:TimeT4
which is not exactly what I wanted. Also it seems (Group-1)*Time and
(Group-1)*(Time-1) also give me exactly the same set of terms as
Group*(Time-1).
So I have some conceptual...
2010 Jun 01
1
using the design matrix to correctly configure contrasts
...r convenience to
# build on previous 2-way ANOVA
design <- model.matrix(~Time + Tissue + Pperiod + Time:Tissue +
Time:Pperiod + Tissue:Pperiod)
fit <- lmFit(rma.pp, design)
#how does this design look:
> colnames(design)
[1] "(Intercept)" "Timet2"
[3] "Timet3" "Timet4"
[5] "Timet5" "Timet6"
[7] "Timet7" "Timet8"
[9] "Timet9" "Timet10"
[11] "Timet11" "Timet12"
[13] "Timet13" "Timet14...