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Table 2 Safe depths of 23 upper back acupoints of sexes

From: Safe needling depths of upper back acupoints in children: a retrospective study

Acupoints

Boys

Girls

P value

Mean ± S.D.

Mean ± S.D.

GV9

27.78 ± 8.88

24.87 ± 7.83

0.003a

GV10

28.54 ± 8.47

26.02 ± 7.67

0.009a

GV11

28.17 ± 8.21

25.88 ± 7.04

0.009a

GV12

30.45 ± 9.90

28.03 ± 8.24

0.028a

GV13

33.61 ± 10.07

30.59 ± 9.11

0.008a

GV14

33.81 ± 10.57

30.70 ± 10.68

0.012a

BL11

33.39 ± 10.48

28.95 ± 8.67

<0.001a

BL12

35.61 ± 9.61

32.33 ± 8.09

0.001a

BL13

28.54 ± 7.08

26.41 ± 5.38

0.003a

BL14

24.92 ± 7.95

22.69 ± 6.63

0.008a

BL15

25.48 ± 6.57

23.93 ± 5.41

0.024a

BL16

24.15 ± 7.19

21.89 ± 6.24

0.004a

BL17

25.37 ± 6.87

23.62 ± 6.20

0.021a

BL41

30.86 ± 9.20

28.21 ± 7.89

0. 010a

BL42

28.02 ± 8.69

26.48 ± 7.25

0.110

BL43

24.68 ± 7.54

22.95 ± 6.75

0.043a

BL44

20.31 ± 7.79

19.19 ± 7.01

0.202

BL45

18.45 ± 7.07

17.62 ± 6.50

0.300

BL46

18.16 ± 6.63

16.96 ± 6.12

0.111

SI14

36.82 ± 12.23

32.51 ± 10.81

0.002a

SI15

38.75 ± 12.10

34.74 ± 10.47

0.003a

GB21

28.01 ± 9.37

26.61 ± 8.81

0.192

SP21

19.48 ± 4.39

18.84 ± 4.56

0.216

  1. Unit of mean ± SD: mm
  2. aStatistically significant