+--------+-------------------+
| rats   | R Documentation   |
+--------+-------------------+

data from Exercise 7.13, p225
-----------------------------

Description
~~~~~~~~~~~

The ``rats`` data frame has 50 rows and 4 columns.

Format
~~~~~~

This data frame contains the following columns:

time
    Time to tumor development

tumor
    Indicator of tumor development (1=yes, 0=no)

trt
    Treatment (1=treated with drug, 0=given placebo)

litter
    Litter

Source
~~~~~~

Klein and Moeschberger (1997) *Survival Analysis Techniques for Censored
and truncated data*, Springer.

Examples
~~~~~~~~

::

    data(rats)

