Journal of Orthopaedic Surgery and Research

Table 4 Association of patient characteristics and muscle parameters with function as measured with ODI

From: Correlation of psoas major muscle morphology with function and clinical symptoms in patients with symptomatic multilevel lumbar spinal stenosis

Subject characters	Univariable analysis		Multivariable analysis
Subject characters	Coefficient, 95% CI	p value	Coefficient, 95% CI	p value
Gender	− 0.059 (− 0.112, − 0.006)	0.029	− 0.023 (− 0.078, 0.032)	0.401
Age	− 0.001 (− 0.004, 0.002)	0.628
BMI	0.005 (− 0.001, 0.011)	0.128
Back pain duration	0.0003 (0.000, 0.001)	0.057
Leg pain duration	0.0002 (− 0.002, 0.001)	0.333
Number of levels involved	0.024 (− 0.033, 0.080)	0.411
PMI	− 0.031 (− 0.048, − 0.015)	< 0.001	− 0.015 (− 0.035, 0.006)	0.155
HU	− 0.010 (− 0.015, − 0.006)	< 0.001	− 0.008 (− 0.013, − 0.003)	0.002
MPM	− 0.013 (− 0.256, 0.229)	0.915

Bold indicates statistical significance
ODI Oswestry Disability Index; CI confidence interval; BMI body mass index; PMI psoas major muscle mass index; HU Hounsfield units; MPM morphological change in the psoas major

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ISSN: 1749-799X

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