sksurv.nonparametric.nelson_aalen_estimator#

sksurv.nonparametric.nelson_aalen_estimator(event, time)[source]#

Nelson-Aalen estimator of cumulative hazard function.

See [1], [2] for further description.

Parameters:

  • event (array-like, shape = (n_samples,)) – Contains binary event indicators.

  • time (array-like, shape = (n_samples,)) – Contains event/censoring times.

Returns:

  • time (array, shape = (n_times,)) – Unique times.

  • cum_hazard (array, shape = (n_times,)) – Cumulative hazard at each unique time point.

References