| print.aareg {survival} | R Documentation |
Print an aareg object
Description
Print out a fit of Aalen's additive regression model
Usage
## S3 method for class 'aareg'
print(x, maxtime, test=c("aalen", "nrisk"),scale=1,...)
Arguments
x |
the result of a call to the |
maxtime |
the upper time point to be used in the test for non-zero slope |
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. |
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. |
... |
for future methods |
Details
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.
Value
the calling argument is returned.
Side Effects
the results of the fit are displayed.
References
Aalen, O.O. (1989). A linear regression model for the analysis of life times. Statistics in Medicine, 8:907-925.
See Also
aareg