Table 3.

Unadjusted analyses assessing the association of pre-operative opioid use and 6-month adverse events and PROMs

Unadjusted Analysis	Non-opioid user n  = 824	Opioid user n  = 359	P  value
Total adverse events	38.8%	38.8%	1.00
Acute significant adverse events	5.7%	5.3%	0.88
Post-discharge significant adverse events	6.5%	7.1%	0.78
Total significant adverse events	12.3%	12.7%	0.95
Unadjusted Analysis	Non-opioid user n  = 714	Opioid user n  = 317	P Value
6-month Oxford Score	39.5 (7.8)	38.8 (8.9)	0.22
6-month EQ-VAS	77.1 (17.8)	71.9 (20.5)	< 0.001
6-month “Much Better”	81.1%	80.3%	0.83

Bold values indicate statistical significance (P < 0.05)