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Table 1 Comparison of the general information of the two groups χ ¯ ± s , n = 40

From: Impact of warming blood transfusion and infusion toward cerebral oxygen metabolism and cognitive recovery in the perioperative period of elderly knee replacement

Item

WBI

Control

t

P

Age (years)

53.68 ± 10.97

59.00 ± 8.73

1.8437

>0.05

Height (cm)

163.37 ± 6.95

163.42 ± 6.68

0.0345

>0.50

Weight (kg)

68.00 ± 15.06

71.89 ± 14.76

1.1680

>0.20

Years of education (years)

11.84 ± 2.03

11.37 ± 2.31

0.9666

>0.10

Operation time (min)

151.21 ± 21.76

147.84 ± 23.43

0.6666

>0.50

Tourniquet time (min)

91.42 ± 14.32

89.33 ± 13.26

0.6773

>0.50

Extubation time (min)

35.21 ± 6.45

37.28 ± 8.42

0.4532

>0.50

Blood transfusion (ml)

521.05 ± 127.27

536.84 ± 146.10

0.5154

>0.50

Blood loss (ml)

788.68 ± 133.38

810.05 ± 157.43

0.6550

>0.50

Total infusion (ml)

2,973.68 ± 625.25

2,971.05 ± 551.09

0.0199

>0.50

Total loss (ml)

1,646.84 ± 401.64

1,717.90 ± 397.11

0.7957

>0.40