MRI grading of spinal stenosis is not associated with the severity of low back pain in patients with lumbar spinal stenosis

Table 5 Stepwise linear regression analysis to identify factors associated with severity of buttock and leg numbness

	Variable	B^a	SE^b	β^c	P	Adjusted R²
Final	(Constant)	−1.557	1.683			0.481
	Age	0.036	0.016	0.100	0.027
	BMI	−0.181	0.037	− 0.221	< 0.001
	Trunk muscle mass	0.158	0.036	0.212	< 0.001
	NRS LBP	0.204	0.057	0.178	< 0.001
	NRS Buttock and leg pain	0.595	0.056	0.524	< 0.001
	Total number of Modic type 1 changes	0.635	0.289	0.096	0.029
	Severity of stenosis (maximum stenotic level)	0.362	0.171	0.092	0.035

The independent variables entered into the model were age, sex, body mass index, presence and number of comorbidities, trunk muscle mass, appendicular skeletal muscle mass, NRS, SF-36 score, and radiological and MRI findings
^aUnstandardized coefficient
^bstandard error
^cstandardized coefficients

ISSN: 1471-2474