[Retracted] Comparison of the Effects of Epidural Anesthesia and General Anesthesia on Perioperative Cognitive Function and Deep Vein Thrombosis in Patients Undergoing Total Knee Arthroplasty

Table 1

Comparison of clinical data between the two groups.

Group	Male/female	Age (years)	Body mass (kg/m^2)	Education year (years)	Surgery time (min)	Anesthesia time (min)
Control group (n = 34)	19/15	58.92 ± 5.59	32.16 ± 6.16	10.28 ± 3.95	94.32 ± 21.52	116.59 ± 29.86
Observation group (n = 34)	21/13	59.05 ± 6.02	31.85 ± 7.03	11.13 ± 3.81	97.59 ± 22.07	118.19 ± 30.91
t/χ^2 value	0.243	0.125	0.193	0.903	0.619	0.217
value	0.622	0.901	0.847	0.370	0.538	0.829