A population of women who were at least 21 years old, of Pima Indian heritage and living near Phoenix, Arizona, was tested for diabetes according to World Health Organization criteria. The data were collected by the US National Institute of Diabetes and Digestive and Kidney Diseases. We used the 532 complete records after dropping the (mainly missing) data on serum insulin.
Pima.tr
Pima.tr2
Pima.te
These data frames contains the following columns:
npreg
number of pregnancies.
glu
plasma glucose concentration in an oral glucose tolerance test.
bp
diastolic blood pressure (mm Hg).
skin
triceps skin fold thickness (mm).
bmi
body mass index (weight in kg/(height in m)\(^2\)).
ped
diabetes pedigree function.
age
age in years.
type
Yes
or No
, for diabetic according to WHO criteria.
The training set Pima.tr
contains a randomly selected set of 200
subjects, and Pima.te
contains the remaining 332 subjects.
Pima.tr2
contains Pima.tr
plus 100 subjects with
missing values in the explanatory variables.