Dear experts,

I am doing a design with two groups (PATIENTS and HEALTHY CONTROLS).
I have defined in my 2nd level covariates 3 covariates
 - Patients (1 1 1 1 0 0 0 0)
 - HC ( 0 0 0 0 1 1 1 1)
 - Medication of patients ( 600 200 300 400 0 0 0 0)

In the second level analysis to see between groups differences controlling for medication I have define [-1 1 0] to take into account medication for patients.

Is it correct?

Thank you in advance,

Olaia