+---------+-------------------+
| twins   | R Documentation   |
+---------+-------------------+

data from Exercise 7.14, p225
-----------------------------

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

The ``twins`` data frame has 24 rows and 3 columns.

Format
~~~~~~

This data frame contains the following columns:

id
    Twin number

age
    Age of twin's death from CHD, months

death
    Death (male twin) from CHD indicator (1=dead from CHD, 0=alive or
    other cause of death)

gender
    1=male, 2=female

Source
~~~~~~

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

Examples
~~~~~~~~

::

    data(twins)

