Table 6.

Multiple linear regression analysis of influencing factors and SVA.

Influencing factors	Variables	B value	Standard error	t value	P value	R2 value
Spinopelvic parameters	LL	0.342	0.084	4.081	<0.001	0.129
	SS	−0.751	0.165	−4.560	<0.001
	Constant	18.093	2.328	7.771	<0.001
LMA	U-LMA					0.446
	Concave	−9.341	1.820	−5.134	<0.001
	Convex	6.377	1.067	5.978	<0.001
	L-LMA
	Concave	−9.413	1.484	−6.345	<0.001
	Convex	5.782	1.176	4.915	<0.001
FJOA	U-FJOA
	Convex	6.489	2.011	3.226	0.002
	L-FJOA
	Concave	−19.798	4.064	−4.872	<0.001
	Constant	81.710	15.440	5.292	<0.001

LL – lumbar lordosis; SS – sacral slope; SVA – sagittal vertical axis; LMA – lumbar multifidus atrophy; FJOA – facet joint osteoarthritis; U-LMA – upper intervertebral level LMA; L-LMA – lower intervertebral level LMA; U-FJOA – upper intervertebral level FJOA; L-FJOA – lower intervertebral level FJOA.