TABLE 4.

Weekly proportion of patients on wait lists who underwent the operation with medium and low priority according to method of booking surgery^*

	Medium priority		Low priority
	No. of procedures (95% CI)	Odds Ratio†‡ (95% CI)	No. of procedures (95% CI)	Odds Ratio†§ (95% CI)
Wait list booking	38.1 (37.8, 38.4)	1.00	21.2 (20.9, 21.5)	1.00
Pre-booking	45.5 (45.2, 45.9)	1.21 (1.18, 1.24)	31.4 (30.9, 31.8)	2.13 (2.03, 2.22)

CI = confidence interval.

^*Presented as the average number of procedures per week per 100 patients remaining on wait lists.

^†Adjusted for initial queue size at time of consultation, size of elective and urgent queues at registration on wait list, method of scheduling consultation, method of allocating theatre slots, period of referral, emergency and urgent admissions, clearance time at registration and week from registration.

^‡Adjusted for exchangeable correlation within hospitals (0.0012).

^§Adjusted for exchangeable correlation within hospitals (0.0033).