ex1514: Melanoma and Sunspot Activity-An Observational Study

In Sleuth3: Data Sets from Ramsey and Schafer's "Statistical Sleuth (3rd Ed)"

Description

Several factors suggest that the incidence of melanoma is related to solar radiation. These data are the age-adjusted melanoma incidence among males in the Connecticut Tumor Registry and the sunspot activity, 1936–1972 .

Usage

ex1514

Format

A data frame with 37 observations on the following 3 variables.

Year

year

Melanoma

male melanoma incidence in number of cases per 100,000 population

Sunspot

sunspot relative number

Source

Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A Course in Methods of Data Analysis (3rd ed), Cengage Learning.

References

Houghton, A., Munster, E.W. and Viola, M.V. (1978). Increased Incidence of Malignant Melanoma After Peaks of Sunspot Activity, Lancet: 759–760.

Examples

str(ex1514)

Example output

'data.frame':	37 obs. of  3 variables:
 $ Year    : int  1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 ...
 $ Melanoma: num  1 0.9 0.8 1.4 1.2 1 1.5 1.9 1.5 1.5 ...
 $ Sunspot : int  40 115 100 80 60 40 23 10 10 25 ...

Sleuth3 documentation built on May 2, 2019, 6:41 a.m.