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Table 1 Comparison of baseline clinical characteristics between the two groups (x̅ + SD).

From: Effects of conventional nursing in the operating room combined with transcutaneous electrical acupoint stimulation on postoperative cognitive dysfunction after total knee arthroplasty in elderly patients

Clinical characteristics

TEAS group (n = 20)

Control group (n = 20)

P

Males/female

12/8

10/10

0.37

BMI (kg/m2)

64.36 ± 9.08

64.13 ± 9.21

0.70

Age (years)

70.2 ± 4.2

72.3 ± 5.4

0.31

Years of education

6 ± 2.5

5.7 ± 2.1

0.56

ASA grades

 I

6

5

0.62

 II

14

15

Combined with hypertension

12

13

0.74

Combined with Type 2 diabetes

10

11

0.75

Intraoperative fluid volume (ml)

2250 ± 57.9

2570 ± 80.9

0.21

Bleeding volume (ml)

232 ± 35.2

241 ± 29.1

0.22

Operation time (min)

92.1 ± 10.5

98.5 ± 12.7

0.36

Tourniquet (min)

32 ± 10.9

36 ± 10.1

0.09

Use of ephedrine

15

18

0.46

Use of atropine

5

8

0.36

  1. TEAS Transcutaneous acupoint electrical stimulation, BMI Body mass index, ASA American Society of Anesthesiologists.