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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