Table 1.

Cancellations using scheduling rules

Sequence of surgical operations	Surgeon schedule, mean (95% CI)
	Base	LOS↑	LOS↓
Time↑	−10.5 (−14.8 to −6.1)	−19.7 (−30.9 to −8.5)	−3.5 (−19.1 to 12.1)
Time↓	4.2 (−3.2 to 11.6)	−10.9 (−26.3 to 4.5)	18.4 (−2.7 to 39.4)
Var↑	−14.0 (−19.5 to −3.7)	−28.3 (−42.6 to −14.0)	−15.0 (−23.1 to 21.3)
Var↓	6.7 (3.4 to 9.9)	−4.3 (−16.4 to 7.9)	14.9 (−0.3 to 30.0)

CI = confidence interval; LOS = length of stay; Time = length of booked surgery time; Var = expected surgical variation.