Refine Time Partitions by Delivery Setting

[gompertzmakeham]

Currently for each person the surveillance interval is divided into fiscal years (starting on April 1), and then subdivided on the birthday in the fiscal year. For coinciding utilization, like emergency ambulatory visits while in supportive living, this partitioning gives a rough estimate. However the resolution available in the underlying data is to the single day. To improve the precision of the estimate we could further subdivided each interval on the time spans of unique combinations of the following four flags:

• Person has any emergency inpatient stays
• Person has any long term care stays
• Person has any designated supportive living stays
• Person has any case managers allocated

Computationally the exponentially more person with refined intervals at older ages should be offset by the exponential increase in mortality.