Table 2.

Perioperative characteristics of the POCD and non-POCD groups.

	POCD group (n = 111)	Non-POCD group (n = 271)	P value
Preoperative Hct, %	44.20 ± 3.8	40.83 ± 3.8	0.946
Preoperative albumin, g/L	45.49 ± 5.0	43.51 ± 3.6	0.512
Anesthesia time, h	3.64 ± 2.3	3.26 ± 1.0	0.001
Sufentanil dosage, μg	58.18 ± 14.9	46.18 ± 7.8	0.026
IMLC, mmol/L	1.04 ± 0.6	0.74 ± 0.2	1.000
Blood transfusion	20 (18.0)	37 (13.6)	0.001

Data are presented as mean ± standard deviation or n (%).

POCD, postoperative cognitive dysfunction; IMLC, intraoperative maximum lactate concentration; Hct, hematocrit.