Variable         description       
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 PRGN            number of times pregnant             
 PLASMA          plasma glucose concentration at two hours in an oral 
                   glucose tolerance test 
 BP              diastolic blood pressure (mm Hg) 
 THICK           Triceps skin fold thickness (mm) 
 INSULIN         two hour serum insulin (mu U/ml)
 BODY            body mass index: {(weight in kg) / (height in m)}^2
 PEDIGREE        diabetes pedigree function 
 AGE             age (years) 
 RESPONSE        class  variable (=1 if diabetes; 0 otherwise)