Pre-computation of Incidence Timestamps

[gompertzmakeham]

Utilization relative to the onset of critical stages in care, like before and after first entrance to continuing care are strong statistical estimators of utilization process dynamics. The current data set allows for computationally intensive determination of incidence and onset timestamps, because they have to be calculated for each patient. To speed up this process the incidence timestamps can be pre-computed and stored as one record per patient.