CASE STUDIES IN BIOMETRY: Chapter 19.
  
Patterns of Lung Cancer Risk in Ex-Smokers

Brenda W. Gillespie, Michael T. Halpern, Kenneth E. Warner

The files ch19a.dat through ch19g.dat  contain various subsets
 of the data used in this chapter.   Due to the very large size of the
full data set, the data were broken into these subsets to
facilitate easier access by the readers.  

The seven data sets and their sizes are as follows:

ch19a.dat   0.04 Mb   never-smokers
ch19b.dat   0.67 Mb   current smokers: male
ch19c.dat   0.61 Mb   current smokers: female
ch19d.dat   1.15 Mb   former smokers:  male, no college
ch19e.dat   1.49 Mb   former smokers:  male, some college 
ch19f.dat   0.70 Mb   former smokers:  female, no college
ch19g.dat   0.93 Mb   former smokers:  female, some college
  
Total size: 5.42 Mb
 

The ten variables listed in each file are:  

Age:           Age on January 1, 1982. 
Gender:         0=Male, 1=Female 
Education:      0=no college, 1=some college  
Smoker:         1=never, 2=former, 3=current  
Cigarettes/day: values rounded UP to the nearest 5.
Years smoked:   Number of years smoked as of January 1, 1982. 
Years quit:     Number of years since smoking cessation, as of 
                January 1, 1982 (zero indicates less than one year)
Followup Time:  Years from January 1, 1982 until death or last
                interview.
Death codes:    0=alive, 1=death from other causes, 2=lung cancer death.
Freq:           the frequency at which each combination of variables occured.

Permission statement:

The authors grant permission to redistribute this data set in the format
provided.  Use of the data is restricted to non-commercial and
scientific purposes.  Ownership of the data resides with the
American Cancer Society.  Analyses derived from the data should
be conducted with the Society's explicit approval and 
potential participation if any publication in relation to
such analyses is contemplated.