kyphosis


  From rpart: 
  The <code>kyphosis</code> data frame has 81 rows and 4 columns.
  representing data on children who have had corrective spinal surgery.


datasets

This package is based on the code of the rpart package.
It extends rpart by adding additional splitting methods
emphasizing interpretable/parsimonious trees.  Unless indicated
otherwise, it is safe to assume that all functions herein are
extensions of or copied directly from similar or nearly
identical rpart methods.  As such, the authors of rpart are
authors of this package as well.  However, please direct any
error reports or other questions about itree to the maintainer
of this package; they are welcome and appreciated.

Alex Goldstein

itree

Tools for classification and regression trees, with an emphasis
on interpretability.

kyphosis function

This data frame contains the following columns:
<dl>
<dt><code>Kyphosis</code></dt><dd>
a factor with levels
<code>absent</code> 
<code>present</code>
indicating if a kyphosis (a type of deformation)
was present after the operation.
</dd> <dt><code>Age</code></dt><dd>
in months
</dd> <dt><code>Number</code></dt><dd>
the number of vertebrae involved 
</dd> <dt><code>Start</code></dt><dd>
the number of the first (topmost) vertebra operated on.
</dd> </dl>

Format

John M. Chambers and Trevor J. Hastie eds. (1992)
  <em>Statistical Models in S</em>, Wadsworth and Brooks/Cole,
  Pacific Grove, CA 1992.

kyphosis: Data on Children who have had Corrective Spinal Surgery

Description

Usage

Arguments

Format

Source

Examples