Load and return the Worcester Heart Attack Study dataset

The dataset has 500 samples and 14 features. The endpoint is death, which occurred for 215 patients (43.0%).

x : pandas.DataFrame

The measurements for each patient.

y : structured array with 2 fields

fstat: boolean indicating whether the endpoint has been reached or the event time is right censored.

lenfol: total length of follow-up (days from hospital admission date to date of last follow-up)


[2]Hosmer, D., Lemeshow, S., May, S.: “Applied Survival Analysis: Regression Modeling of Time to Event Data.” John Wiley & Sons, Inc. (2008)