Thank you again!
I want to include regressors of no interest in the regression model - would I put them in as covariates and give them a weight of 0? Does the order of adding in covariates when entering them into the model (e.g. should TIV, age, gender be first before regressors of interest)? And would I have to apply any other different weights to regressors of interest (e.g. 4 different scores from the same test to see their differences)?
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