Table 2.

Associations between ERACS drug administrations and postoperative delirium

ERACS Treatment	Odds Ratio (OR)	95% Confidence Interval	P-value
Any ERACS guided analgesic treatment vs. No ERACS treatment (i.e., “collective” model	0.85	0.63, 1.16	0.31
Other significant covariates in “collective” model
Age (Years)	1.01	1.00, 1.03	0.03
BMI	0.98	0.95, 0.99	0.04
Intraoperative Opioid MME	0.99	0.99, 0.99	0.01
Liver Elixhauser index	2.62	1.55, 4.34	<0.001
eGFR (<60 = Yes)	2.15	1.58, 2.93	<0.001
Individual ERACS treatments (i.e., “individual” model)
Acetaminophen	0.60	0.37, 0.95	0.03
Gabapentin	1.36	0.97, 2.21	0.21
Ketamine	1.15	0.72, 1.83	0.55
Lidocaine	0.86	0.53, 1.37	0.52
Dexmedetomidine	0.79	0.46, 1.31	0.39