Design is a collection of about 180 functions that assist and
streamline modeling, especially for biostatistical and epidemiologic
applications. It also contains new functions for binary and ordinal
logistic regression models and the Buckley-James multiple regression
model for right-censored responses, and implements penalized maximum
likelihood estimation for logistic and ordinary linear models. Design
works with almost any regression model, but it was especially written
to work with logistic regression, Cox regression, accelerated failure
time models, ordinary linear models, and the Buckley-James model.
In order to use the Design library, the Hmisc library must also be loaded.
The Design library also contains modifications of existing S-Plus functions.
If your output is formatted differently than you expect, this may be the
reason. For more background on Design, see
http://fharrell.biostat.virginia.edu/s/index.html.
Usage:
library(Design, T)