Hi experts,
I am using FS 6.0 for analyzing the cortical thickness difference between 3 groups: patient1, patient2 and control. In DODS model, I need to creat 2 files, FSDG and mtx file. And we have 3 variables: age, gender and cortical thickness.
1. The FSDG file is:
GroupDescriptorFile 1
Title Tutorial
Class patient1-male
Class patient1-female
Class patient2-male
Class patient2-female
Class control-male
Class control-female
Variables age
Input subject1 patient1-female 20
Input subject2 patient1-male 33
Input subject3 patient2-female 40
Input subject4 patient2-male 50
Input subject5 control-male 30
Input subject6 control-female 35
And there is another way:
GroupDescriptorFile 1
Title Tutorial
Class patient1
Class patient2
Class control
Variables sex age
Input subject1 patient1 1 20
Input subject2 patient1 2 33
Input subject3 patient2 1 40
Input subject4 patient2 2 50
Input subject5 control 2 30
Input subject6 control 1 35
What I want to confirm is that if I want to adjust for sex and age, which one is right?
Another question is that is there any way to get the multiple comparisons between groups simultaneously?
I am looking forward to your reply. Thanks very much.
Sincerely,
Zheng