Extubation in the operating room results in fewer composite mechanical ventilation-related adverse outcomes in patients after liver transplantation: a retrospective cohort study

Table 5 Multivariate logistic regression analysis to evaluate independent factors for OR extubation

Variable	Univariable analysis			Multivariate logistic analysis
Variable	Odds Ratio	95%CI	P valve	Odds Ratio	95%CI	P valve
Age (y)	0.986	0.965-1.006	0.169	0.987	0.963-1.011	0.279
Sex
Female	Ref			Ref
Male	1.878	1.058-3.333	0.031	1.708	0.819-3.562	0.153
BMI (kg/m²)	1.024	0.959-1.093	0.48	1.021	0.942-1.106	0.614
Smoking
No	Ref			Ref
Yes	0.746	0.477-1.167	0.199	0.602	0.363-0.996	0.048
ASA-classification
ASA II	Ref
ASA III	1.230	0.419-3.610	0.706	/	/	>0.999
ASA IV	0.392	0.127-1.209	0.103	/	/	>0.999
ASA V	0.000	0	>0.999	/	/	>0.999
Cardiovascular disease
No	Ref
Yes	0.000	/	>0.999	/	/	>0.999
Respiratory disease
No	Ref			Ref
Yes	0.613	0.173-2.175	0.449	0.838	0.204-3.444	0.806
MELD score	0.963	0.939-0.988	0.004	1.017	0.974-1.061	0.443
Preoperative artificial liver support
No	Ref			Ref
Yes	0.445	0.169-1.173	0.102	0.502	0.129-1.953	0.320
Preoperative-Hemoglobin (g/L)	1.010	1.002-1.018	0.015	0.991	0.980-.002	0.119
Preoperative-WBC (× 10⁹/L)	0.946	0.875-1.023	0.162	0.942	0.850-1.043	0.250
Preoperative-Albumin (g/L)	1.060	1.025-1.095	0.001	1.022	0.975-1.070	0.365
Duration of surgery (h)	0.739	0.641-0.852	<0.001	0.772	0.655-0.911	0.002
Urine output (mL)	1.000	1.0000-1.0001	0.042	1.000	1.000-1.001	0.028
Packed red blood cell transfusion (U)	0.867	0.829-0.906	<0.001	0.886	0.844-0.929	<0.001
Maximal vasopressors need (μg/kg/min)	0.017	0.001-0.197	0.001	0.050	0.004-0.616	0.019

CI Confidence Index, OR Operating room, BMI Body mass index, ASA American Society of Anesthesiologists, MELD Model for End-Stage Liver Disease, WBC White blood cell

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