\HeaderA{print.aareg}{Print an aareg object}{print.aareg}
\keyword{survival}{print.aareg}
\begin{Description}\relax
Print out a fit of Aalen's additive regression model
\end{Description}
\begin{Usage}
\begin{verbatim}
## S3 method for class 'aareg':
print(x, maxtime, test=c("aalen", "nrisk"),scale=1,...)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x}] the result of a call to the \code{aareg} function

\item[\code{maxtime}] the upper time point to be used in the test for non-zero slope

\item[\code{test}] the weighting to be used in the test for non-zero slope.
The default weights are based on the variance of each coefficient, as
a function of time.  The alternative weight is proportional to the number
of subjects still at risk at each time point.

\item[\code{scale}] scales the coefficients.  
For some data sets, the coefficients of the Aalen model will be very
small (10-4); this simply multiplies the printed values by a constant,
say 1e6, to make the printout easier to read.
\item[\code{...}] for future methods
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
The estimated increments in the coefficient estimates can become quite
unstable near the end of follow-up, due to the small number of observations
still at risk in a data set.
Thus, the test for slope will sometimes be more powerful if this last
`tail' is excluded.
\end{Details}
\begin{Value}
the calling argument is returned.
\end{Value}
\begin{Section}{Side Effects}
the results of the fit are displayed.
\end{Section}
\begin{Section}{References}
Aalen, O.O. (1989). A linear regression model for the analysis of life times.
Statistics in Medicine, 8:907-925.
\end{Section}
\begin{SeeAlso}\relax
aareg
\end{SeeAlso}

