Table 4.

Associations Between Patient, Procedure, Facility, and Anesthesia Characteristics of Endoscopic Procedures and Serious Anesthesia Complications—Multivariable Mixed-Effects Logistic Regression Model (N=7,025)

VARIABLE		UNADJUSTED OR (95% CI)	ADJUSTED OR (95% CI)*
Age (years)	18 – 49	1.00 (referent)	1.00 (referent)
	> 50	1.09 (0.51, 2.35)	1.53 (0.54, 4.33)
Sex	Male	1.00 (referent)	1.00 (referent)
	Female	0.45 (0.19, 1.04)	0.39 (0.13, 1.12)
ASA	ASA 3	1.00 (referent)	1.00 (referent)
	ASA 4/5	4.97 (2.01, 12.25)	3.84 (1.09, 13.57)
Anesthesia Type	MAC / Sedation	1.00 (referent)	1.00 (referent)
	General	12.41 (5.05, 30.53)	4.71 (1.20, 18.50)
Inpatient Status	Outpatient	1.00 (referent)	1.00 (referent)
	Inpatient	0.66 (0.32, 1.34)	0.41 (0.12, 1.39)
History Portal Hypertension Complication	No	1.00 (referent)	1.00 (referent)
	Yes	1.28 (0.39, 4.19)	2.35 (0.65, 8.46)

^*Adjusted for age, sex, ASA class, anesthesia type, inpatient status, and history of portal hypertension complication as indicated by ICD 9 code, as well as facility, practice and provider ID using hierarchical/mixed-effects modeling to account for varying complication reporting practices.

Abbreviations: American Society of Anesthesiologists (ASA); Monitored anesthesia care (MAC)