Table 2:

Median oral morphine equivalents (mg) filled within 7 days of same-day surgery in the cohort by procedure, institution and year of surgery during the study period^*

Variable	No. of patients	Total OMEs, mg
Variable	No. of patients	Median (IQR)	Minimum value–maximum value	p value^†
Overall	60 547	135 (90–180)	8–35 526
Type of procedure
Excision partial breast only ± axillary intervention	51 798	135 (90–180)	8–35 526	< 0.0001
Excision total breast ± axillary intervention	3692	135 (100–200)	10–13 200
Excision radical breast ± axillary intervention	2172	150 (113–225)	20–6800
Bilateral surgery	2885	150 (113–225)	15–24 300
Hospital type
Teaching	15 272	135 (90–180)	8–35 526	0.8377
Community	42 961	135 (90–180)	10–24 300
Small	296	135 (75–200)	23–1200
Pediatric	54	113 (68–225)	27–1800
Year of surgery
2012	3950	135 (113–225)	23–11 685	< 0.0001
2013	8044	135 (113–225)	15–21 600
2014	8596	135 (113–225)	8–24 300
2015	8223	135 (113–225)	15–35 526
2016	8016	135 (113–225)	19–19 575
2017	7317	135 (100–180)	15–13 050
2018	6916	113 (75–150)	15–8235
2019	6767	75 (50–113)	10–5580
2020	2718	75 (50–113)	10–18 180

Note: IQR = interquartile range, OME = oral morphine equivalent.
↵* OME data not available for n = 73 patients as data could not be converted with the ICES macro (n = 60 547).
↵† Kruskal–Wallis test comparing the mean rank between groups.