Table 5.

Concentration of TNF-α in POCD and non-POCD groups.

	Group	Patients	1 day preoperatively	5 days postoperatively	P value	7 days postoperatively	P value
TNF-α, pg/mL	POCD	111	32.23 ± 4.81b1	41.61 ± 8.02a,b2	0.042	37.67 ± 6.73a	0.027
	Non-POCD	271	29.67 ± 4.55	31.62 ± 6.21	0.194	28.04 ± 7.71	0.077

Data are presented as mean ± standard deviation.

POCD, postoperative cognitive decline; TNF-α, tumor necrosis factor-α.

Compared with 1 day preoperatively, ^aP ≤ 0.05; Compared with the non-POCD group, ^bP ≤ 0.05, ^b1P = 0.003, ^b2P < 0.001.