Hi all,
in a group of alcoholic patients (segregated by Sex), I've measured the association between mean brain volumes (dependent variables) and alcohol dosage (i.e., alc_sqrt), while controlling for the effect of head size (i.e., ICV), age and education. I've used a mixed effect model with Site as the cluster variable because data have been pooled from several research Sites.
Here is the code:
foreach var of varlist LeftCerebellumWhiteMatter - CC_Anterior {
bysort Sex: xtmixed `var' ICV Age Education alc_sqrt || Site:
}
For the brain regions where I've got a significant association with alcohol dosage, I would like to make two-way scatter plots to illustrate that association graphically. BUT I want to use another software. So what I do need are the mean brain volumes for each participant adjusted for ICV, age, education. Does it make sense to you?
I replicate the code but not including alcohol dosage
foreach var of varlist ... {
bysort Sex: xtmixed `var' ICV Age Education || Site:
}
Now, How can I estimate the adjusted mean brain volumes for each participant?
Thanks in advance for your help!
in a group of alcoholic patients (segregated by Sex), I've measured the association between mean brain volumes (dependent variables) and alcohol dosage (i.e., alc_sqrt), while controlling for the effect of head size (i.e., ICV), age and education. I've used a mixed effect model with Site as the cluster variable because data have been pooled from several research Sites.
Here is the code:
foreach var of varlist LeftCerebellumWhiteMatter - CC_Anterior {
bysort Sex: xtmixed `var' ICV Age Education alc_sqrt || Site:
}
For the brain regions where I've got a significant association with alcohol dosage, I would like to make two-way scatter plots to illustrate that association graphically. BUT I want to use another software. So what I do need are the mean brain volumes for each participant adjusted for ICV, age, education. Does it make sense to you?
I replicate the code but not including alcohol dosage
foreach var of varlist ... {
bysort Sex: xtmixed `var' ICV Age Education || Site:
}
Now, How can I estimate the adjusted mean brain volumes for each participant?
Thanks in advance for your help!
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