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** |
*Compared with the left side, P < 0.01; ** Compared with females, P < 0.001
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)