|From||David Airey <email@example.com>|
|Subject||re: st: collinearity in hotelling|
|Date||Fri, 28 May 2004 13:07:55 -0500|
I used hotelling to compare some before and after data from patients who
underwent a surgical procedure. First I made a difference score for each
measure, and then tested whether the vector of mean difference scores was
equal to a vector of zeros.
The Hotelling T-squared procedure dropped 18 of the 28 variables "due to
collininearity." I don't know how to interpret collininearity in this
Any information is appreciated.