This is version 1.0 of a survival analysis package for XLISP-Stat. It
has a fairly complete implementation of the Cox proportional hazards
model, including such features as left truncation, stratification,
support for recurrent events, model-agnostic covariance matrices and
quite a lot of diagnostics.  The code, documentation and examples are
packaged together in the files coxreg.nw and modelformula.nw, using
the noweb literate programming system.

This is free software, distributed under the terms of the GNU Public
License (in the file COPYING), there is no warranty whatsoever. While
this license permits you to edit and modify the code you are strongly
encouraged to modify only the noweb files coxreg.nw and
modelformula.nw and not to make direct modifications to the program,
documentation and example files produced from them.

The installation process creates two example files. The file
"coxdemos.lsp" gives a fairly complete review of what the software can do.
It contains all the code from the Examples sections of the documentation.
The file "coxexample.lsp" gives a simple analysis, showing how to load
data, fit a Cox model, and draw a few graphs.  A transcript from running
this file is in coxexample.out, with PostScript graphs in image*.ps.

Thomas Lumley
thomas@biostat.washington.edu