18/3-04 Proportional odds model for survival data included prop.odds()
11/5-04 Regression design interpreter fixed (BUG for factors).
17/6-04 Cumulative martingale residuals corrected. Minor other stuff.
9/7-04 New robust option ROBUST=0 to limit the memory allocation for large data-sets. Returns only estimates and martingale based variances.
5/8-04 Minor details.
29/9-04 Covariance option included for most functions, and some minor stuff related to plotting of the output.
1/11-04 3 significant digits (signif) for output rather than 3 digigts (round). Covariate names now returned for 1-dimensional parameters for semi-parametric aalen model. R.2.0 version and R.1.9 version for windows.
19/11-04 Variance for baseline of proportional odds model corrected.
24/6-05 Cluster option included for aalen and cox-aalen functions. Slightly modified version, correcting various bugs.
25/11-05 Wald tests added for semiparametric summary.
3/12-05 Minor change with regard to number of simulations.
22/6-06 Further updates and slight restructering of code.
8/8-06 Two-stage estimation in test version, and generalized proportional odds model.
15/11-06 Minor detail fixed.