In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] says... > Any assistance would be appreciated: I am attempting to run some survival > analyses using Stata STCOX, and am getting messages that certain variables are > collinear and have been dropped. Unfortunately, these variables are the ones I > am testing in my analysis! Collinearity is a problem among the independent variables regardless of the model you're using. So you can run your independents through a regression model with basically anything as the dependent variable and use the diagnostics in the regression program to find out where the problems are occurring. Good luck, John Hendrickx ================================================================= Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =================================================================