Table 2.

Indexes for monitoring waiting list performance

Indexes	Aggregation level	Retrospective	Cross-sectional
WAITING TIME	- For each URG	Waiting time of patients who received treatment during a given period T	Waiting time of patients currently on the list at an index day
	- All classes
	- For each URG	Waiting time of patients who received treatment during a given period T, weighted with the priority score	Waiting time of patients currently on the list at an index day, weighed with the priority score
	- All classes
WAITING LIST LENGTH	- For each URG	Average number of patients on waiting list during a given period T	Number of patients currently on the list at an index day
	- All classes
APPROPRIATE PERFORMANCE INDEX (API)	- For each URG	Percentage of patients receiving treatment within their respective MTBT in a given period of time T	Percentage of patients currently on the list at an index day having waiting time inferior to their respective MTBT