+---------------+-------------------+
| H\_melanoma   | R Documentation   |
+---------------+-------------------+

Melanoma skin cancer incidence
------------------------------

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

These data from the Connecticut Tumor Registry present age-adjusted
numbers of melanoma skin-cancer incidences per 100,000 people in
Connectict for the years from 1936 to 1972.

Usage
~~~~~

::

    melanoma

Format
~~~~~~

A data frame with 37 observations on the following 2 variables.

year
    Years 1936 to 1972.

incidence
    Rate of melanoma cancer per 100,000 population.

Note
~~~~

This dataset is not related to the ``melanoma`` dataset in the **boot**
package with the same name.

The S-PLUS 6.2 help for the melanoma data says that the incidence rate
is per *million*, but this is not consistent with data found at the
National Cancer Institute
(`http://www.nci.nih.gov <http://www.nci.nih.gov>`_).

Author(s)
~~~~~~~~~

Documentation contributed by Kevin Wright.

Source
~~~~~~

Houghton, A., E. W. Munster, and M. V. Viola. (1978). Increased
Incidence of Malignant Melanoma After Peaks of Sunspot Activity. *The
Lancet*, **8**, 759â€“760.

References
~~~~~~~~~~

Cleveland, William S. (1993) *Visualizing Data*. Hobart Press, Summit,
New Jersey.

Examples
~~~~~~~~

::

    # Time-series plot.  Figure 3.64 from Cleveland.
    xyplot(incidence ~ year,
      data = melanoma,
        aspect = "xy",
        panel = function(x, y)
            panel.xyplot(x, y, type="o", pch = 16),
        ylim = c(0, 6),
        xlab = "Year",
        ylab = "Incidence")

