COXREG Command Additional Features

The command syntax language also allows you to:

• Obtain frequency tables that consider cases lost to follow-up as a separate category from censored cases.
• Select a reference category, other than first or last, for the deviation, simple, and indicator contrast methods.
• Specify unequal spacing of categories for the polynomial contrast method.
• Specify additional iteration criteria.
• Control the treatment of missing values.
• Specify the names for saved variables.
• Write output to an external IBM® SPSS® Statistics data file.
• Hold data for each split-file group in an external scratch file during processing. This can help conserve memory resources when running analyses with large datasets. This is not available with time-dependent covariates.