Meta-analysis of the incidence and risk factors of postoperative delirium in organ transplant patients

Table 2 presents the literature information regarding the risk factors of postoperative delirium in organ transplant patients

Ref.	Country/region	Research type	Age (year)	Male	Transplanted organ	POD evaluation	Risk factor	NOS
Anderson et al[38], 2018	PA, United States	Retrospective	mean: 61	63.23%	Lung	NA	a/b	8
Binda et al[39], 2017	Italian	Retrospective	NA	NA	Liver	CAM-ICU	c/d	7
Haugen et al[40], 2018	United States	Retrospective	50.3 ± 13.7	61.40%	Kidney	NA	a	8
Lee et al[41], 2013	Korea	Retrospective	51.00 ± 9.570	74.40%	Liver	DSM-IV	a/f	9
Lee et al[42], 2018	Korea	Retrospective	mean: 54	70.35%	Liver	CAM	f/d/g	9
Lescot et al[43], 2013	France	Retrospective	mean: 60	64.30%	Liver	DSM-IV	d	9
Ma et al[25], 2023	Changsha, China	Retrospective	47.1 ± 10.0	82.2%	Liver	CAM-ICU	i/c/f	9
Smith et al[44], 2018	NC, United States	Retrospective	mean: 54.5	59%	Lung	NA	b/h	8
Wang et al[45], 2014	Taiwan, China	Retrospective	53.40 ± 8.40	74.40%	Liver	RASS	e/c/d/g	9
Yoon et al[46], 2009	Seoul, Korea	Retrospective	50.05 ± 8.05	80.16%	Liver	DSM-IV	e/c/g	9

“e” was reported by Chang et al[10] in 2022; “c/f” was reported by Chen et al[11] in 2020; “a/h” was reported by Lee et al[22] in 2024; “f/c/I” was reported by Ma et al[25] in 2023; “a” was reported by Ruck et al[34] in 2024; “j” was reported by Park et al[30] in 2020 and Ri et al[33] in 2020. POD: Postoperative delirium; NOS: Newcastle-Ottawa Scale; NA: Not available; CAM: Confusion assessment method; ICU: Intensive care unit; DSM: Diagnostic and Statistical Manual of Mental Disorders; RASS: Richmond Agitation-Sedation Scale; a: Age; b: Primary graft dysfunction; c: History of hepatic encephalopathy; d: Acute Physiologic and Health Evaluation II score; e: Alcohol abuse history; f: Preoperative model for end stage liver disease score; g: Endotracheal intubation (day); h: Psychotropic medications use; i: Preoperative infections; j: With diuretics.