Heart disease — heart • qacr

Predict heart disease from lab data

heart

Format

A data frame with 303 rows and 14 variables:

age: integer. age in years.
sex: factor with 2 levels. male, female.
cp: factor with 4 levels. chest pain type (typical angina, atypical angina, non-anginal pain, asymptomatic).
testbps: integer. resting blood pressure in mm Hg on admission to the hospital.
chol: integer. serum cholestoral in mg/dl.
fbs: integer. fasting blood sugar > 120 mg/dl (1 = true; 0 = false).
restecg: factor with 3 levels. resting electrocardiographic results (normal, having ST-T wave abnormality,left ventricular hypertrophy).
thalach: integer. maximum heart rate achieved.
exang: integer. exercise induced angina (1 = yes; 0 = no).
oldpeak: double. ST depression induced by exercise relative to rest.
slope: factor with 3 levels. the slope of the peak exercise ST segment (upslope, flat, downsloping).
ca: integer. number of major vessels (0-3) colored by flourosopy.
thal: factor with 3 levels. normal, fixed defect, reversable defect.
disease: factor with 2 levels. heart disease (yes, no). This is the outcome variable of interest.

Source

Data obtained from the UCI Machine Learning Repository.

Creators:

Hungarian Institute of Cardiology. Budapest: Andras Janosi, M.D.
University Hospital, Zurich, Switzerland: William Steinbrunn, M.D.
University Hospital, Basel, Switzerland: Matthias Pfisterer, M.D.
V.A. Medical Center, Long Beach and Cleveland Clinic Foundation: Robert Detrano, M.D., Ph.D.

Donor: David W. Aha (aha '@' ics.uci.edu) (714) 856-8779

Examples

summary(heart)
#>       age            sex                     cp         testbps     
#>  Min.   :29.00   female: 97   typical angina  : 23   Min.   : 94.0  
#>  1st Qu.:48.00   male  :206   atypical angina : 50   1st Qu.:120.0  
#>  Median :56.00                non-anginal pain: 86   Median :130.0  
#>  Mean   :54.44                asymptomatic    :144   Mean   :131.7  
#>  3rd Qu.:61.00                                       3rd Qu.:140.0  
#>  Max.   :77.00                                       Max.   :200.0  
#>                                                                     
#>       chol            fbs                                 restecg   
#>  Min.   :126.0   Min.   :0.0000   normal                      :151  
#>  1st Qu.:211.0   1st Qu.:0.0000   ST-T wave abnormality       :  4  
#>  Median :241.0   Median :0.0000   left ventricular hypertrophy:148  
#>  Mean   :246.7   Mean   :0.1485                                     
#>  3rd Qu.:275.0   3rd Qu.:0.0000                                     
#>  Max.   :564.0   Max.   :1.0000                                     
#>                                                                     
#>     thalach          exang           oldpeak             slope    
#>  Min.   : 71.0   Min.   :0.0000   Min.   :0.00   upsloping  :142  
#>  1st Qu.:133.5   1st Qu.:0.0000   1st Qu.:0.00   flat       :140  
#>  Median :153.0   Median :0.0000   Median :0.80   downsloping: 21  
#>  Mean   :149.6   Mean   :0.3267   Mean   :1.04                    
#>  3rd Qu.:166.0   3rd Qu.:1.0000   3rd Qu.:1.60                    
#>  Max.   :202.0   Max.   :1.0000   Max.   :6.20                    
#>                                                                   
#>        ca                        thal     disease  
#>  Min.   :0.0000   normal           :166   no :164  
#>  1st Qu.:0.0000   fixed defect     : 18   yes:139  
#>  Median :0.0000   reversable defect:117            
#>  Mean   :0.6722   NA's             :  2            
#>  3rd Qu.:1.0000                                    
#>  Max.   :3.0000                                    
#>  NA's   :4