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Table 2 Incremental cost and waiting time of reengineered billing systems

From: Incremental analysis of the reengineering of an outpatient billing process: an empirical study in a public hospital

(O) Origin (R) Reengineering Incremental cost Waiting time
OPD Volume × unit cost of cash billing Volume cash billing × unit cost of cash billing + volume smartcard billing × unit cost of smartcard billing – clerk compensation saving (R) − (O) Original cash billing waiting time × clerk loading