Table 4.

Adjusted analyses assessing the association of preoperative opioid use with 6-month adverse events, the proportion of “Much Better” on the global perceived improvement scale, Oxford and EQ-VAS scores

Adjusted Analysis	Opioid user (Odds Ratio (95CI))	P  value	AUC
Total adverse events	0.85 (0.61, 1.19)	0.35	0.63
Acute significant adverse events	1.05 (0.55, 1.96)	0.87	0.66
Total significant adverse events	0.94 (0.57, 1.50)	0.79	0.64
6-month “Much Better”	0.93 (0.61, 1.43)	0.73	0.64
Adjusted Analysis	Opioid user (MD (95CI))	P value	Adjusted R 2
6-month Oxford Score	-0.34 (-1.63, 0.95)	0.60	0.08
6-month EQ-VAS	-2.26 (-5.16, 0.61)	0.12	0.09

95 CI 95% Confidence intervals. AUC Area under the curve, MD Mean difference