The following are the meanings of the columns for a set of patients:

Age: The age of the patient
Sex: 1 (True) for male and 0 (False) for female
bp: Resting Blood Pressure (in mm Hg)
chol: Cholesterol (mg / dl)
maxHeartRate: maximum heart rate achieved (bpm)
risk: heart attack risk: 1 for high risk and 0 for low risk