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mlbench (version 2.1-7)

PimaIndiansDiabetes: Pima Indians Diabetes Database

Description

A data frame with 768 observations on 9 variables.

Usage

data("PimaIndiansDiabetes", package = "mlbench")
data("PimaIndiansDiabetes2", package = "mlbench")

Arguments

Format

pregnantNumber of times pregnant
glucosePlasma glucose concentration (glucose tolerance test)
pressureDiastolic blood pressure (mm Hg)
tricepsTriceps skin fold thickness (mm)
insulin2-Hour serum insulin (mu U/ml)
massBody mass index
pedigreeDiabetes pedigree function
ageAge (years)
diabetesClass variable (test for diabetes)

Details

The data set PimaIndiansDiabetes2 contains a corrected version of the original data set. While the UCI repository index claims that there are no missing values, closer inspection of the data shows several physical impossibilities, e.g., blood pressure or body mass index of 0. In PimaIndiansDiabetes2, all zero values of glucose, pressure, triceps, insulin and mass have been set to NA, see also Wahba+Gu+Wang:1995 and Ripley:1996.

References

Blake+Merz:1998, Ripley:1996, Wahba+Gu+Wang:1995

Examples

Run this code
data("PimaIndiansDiabetes", package = "mlbench")
summary(PimaIndiansDiabetes)

data("PimaIndiansDiabetes2", package = "mlbench")
summary(PimaIndiansDiabetes2)

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