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Table 1 Key concepts for the study variable

From: Variation in surgical demand and time to hip fracture repair: a Canadian database study

Concept Definition
Clearance time The expected length of time within which all patients hospitalized for hip fracture could undergo surgery when hospital operates at a maximum weekly service rate if there were no new arrivals.
Maximum weekly service rate The maximum number of patients undergoing hip fracture surgery in a single week during a fiscal quarter for a given hospital.
Benchmark demand All hospitalized patients could undergo surgery within two days.
Medium demand All hospitalized patients could undergo surgery within 4 days.
High demand All hospitalized patients could undergo surgery within 6 days.
Excessive demand All hospitalized patients require 7 or more days to undergo surgery.