Table 3.

Association between wait-list size and chances of on-time surgery as measured by odds ratios derived from discrete-time survival regression models

	Semi-urgent		Non-urgent
	Crude	Adjusted*	Crude	Adjusted*
Surgery demand	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)
Wait-list size category
1 – <1 week list-size	1.00	1.00	1.00	1.00
2 – half month list-size	0.49 (0.42, 0.57)	0.64 (0.54, 0.75)	0.88 (0.62, 1.25)	0.75 (0.51, 1.09)
3 – 1 month list-size	0.44 (0.39, 0.50)	0.53 (0.45, 0.62)	0.39 (0.28, 0.55)	0.38 (0.26, 0.56)
4 – >1 month list-size	0.57 (0.49, 0.65)	0.49 (0.41, 0.60)	0.30 (0.21, 0.41)	0.31 (0.20, 0.47)
Direct admission†	-	0.93 (0.91, 0.95)	-	0.90 (0.87, 0.94)

* Adjusted for age, sex, comorbidity, calendar period, hospital, and week on the list.

^† Associated with one additional surgery performed without wait-list registration