Table IV.

Primary outcome measures in control and performance groups

	Control (N = 479)	Performance (N = 166)	P value	IRR/beta/OR (95% CI)
LOS, h, mean (SD)	17.0 (12.1)	11.9 (12.1)	< .0001	0.70 (0.62–0.79)
LOS, h, median (IQR)	9.2 (6.5–26.8)	7.5 (6.1–9.5)	.0001
Unanticipated admission	16/356 = 4.5%	10/165 = 6.1%	.44	1.37 (0.61–3.1)
Patient-requested admission	10/356 = 2.8%	0/165 = 0%	.030	n/a
PACU LOS, mean (SD)	122.8 (61.9)	116.9 (54.5)	.34	0.95 (0.86–1.05)
Postoperative MME, mean (SD)	24.8 (23.7)	15.5 (12.4)	.0003	−9.3 (−14.4 to −4.3)
Average daily MME, mean (SD)	53.0 (28.0)	36.9 (22.7)	< .0001	−16.1 (−21.2 to −10.9)
Average daily pain, mean (SD)	2.74 (1.90)	2.17 (1.95)	.003	−0.58 (−0.96 to −0.19)
Postoperative antiemetic, n (%)	44 (13.3%)	14 (9.2)	.20	0.66 (0.35–1.25)

IRR, incidence rate ratio; LOS, length of stay; MME, morphine milligram equivalent; OR, odds ratio; PACU, postanesthesia care unit.