Table 2.

Comparative analysis of OLIF operative window parameters between sexes

Disc level		Mean ± SD [cm]		Min. [cm]		Max. [cm]		P value
		M	F	M	F	M	F
L2–L3	BW	1.31 ± 0.37	1.48 ± 0.39	0.44	0.63	2.20	2.89	< 0.001
	PMW	1.05 ± 0.36	0.70 ± 0.33	0.00	0.00	2.04	1.76	< 0.001
L3–L4	BW	1.19 ± 0.37	1.36 ± 0.37	0.38	0.56	2.67	2.32	< 0.001
	PMW	1.41 ± 0.35	0.99 ± 0.32	0.48	0.00	2.43	2.08	< 0.001
L4–L5	BW	0.66 ± 0.52	0.57 ± 0.47	0.00	0.00	2.12	1.91	0.122
	PMW	1.45 ± 0.31	1.09 ± 0.30	0.62	0.28	2.53	2.12	< 0.001

Min minimum; Max maximum; BW Bare window; PMW Psoas major window; M male; F female