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# Table 4 Puncture success rate

L1 L2 L3 L4 L5
LSR 127/200 167/200 191/200 196/200 175/200
RSR 90/200* 121/200* 167/200* 185/200* 176/200
BSR 78/200 115/200 167/200 185/200 166/200
ESR 139/200 172/200 191/200 196/200 185/200
FSR 84/200 117/200 170/200 187/200 186/200
MSR 133/200** 171/200** 190/200** 194/200 165/200**
1. *Compared with the left side, P < 0.01; ** Compared with females, P < 0.001
2. LSR: Left Success Rate; RSR: Right Success Rate; BSR: the Puncture Success Values of both sides were larger than or equal to 34 for the identical vertebra), and the Either Side Success Rate (ESR: the Puncture Success Value of either side was larger than or equal to 34). The Female Success Rate (FSR) was calculated as follows: for example, if for the L1 level, a puncture was performed through both sides, then for 100 females, there were 200 punctures. If, of the 200 punctures, 84 were considered successful, then the FSR = 84/200). The Male Success Rate (MSR) is calculated as for the FSR)