Table 2.

Puncture Max-angle (°)

	L1	L2	L3	L4	L5
Left	30.58 ± 7.13	34.23 ± 6.85	41.05 ± 6.10	45.39 ± 5.38	48.16 ± 6.88
Right	27.59 ± 7.70*	31.87 ± 8.52*	38.71 ± 7.31*	43.30 ± 5.95*	48.54 ± 6.89
Female	27.05 ± 6.93	36.01 ± 7.13	37.70 ± 6.85	42.76 ± 5.73	49.59 ± 6.01
Male	31.12 ± 7.64**	30.10 ± 7.34**	42.06 ± 6.07**	45.93 ± 5.36**	47.11 ± 7.45**
Mean	29.08 ± 7.56	33.06 ± 7.81	39.88 ± 6.83	44.34 ± 5.76	48.34 ± 6.88

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