The Framingham study is perhaps one of the most well known
long term studies to identify the relationship between
various risk factors and diseases and to characterize the 
natural history of chronic circulatory disease processes.
The data on various aspects have been and continue to be 
collected every two years on a cohort of individuals.  It began 
in 1948 in Framingham located 21 miles west of Boston with 
limited goals of investigating the serum cholesterol, smoking and 
elevated blood pressure as the risk factors of coronary heart
disease. Over the years its goal has been greatly expanded
to aid in understanding the numerous etiological factors of
various diseases.

The data file "fram_f.dat" is a subset of a huge
data base collected in the Framingham study over the years.
The file  includes 384 women older than 50 at th study entry
and has 2304 observations.

The variable names are:

Column		 Variable 

  1               subject ID
  2   		  time 
  3		  baseline age
  4 		  baseline BMI
  5 		  # of cigarettes per day
  6	          cholesteroal level