Predictors of achieving minimal clinically important difference in functional status for elderly patients with degenerative lumbar spinal stenosis undergoing lumbar decompression and fusion surgery

Table 4 Univariable and multivariable logistic regression analysis to identify independent predictors for achievement of MCID

Subject characters	Univariable analysis		Multivariable analysis
Subject characters	Odds Ratio, 95% CI	p value	Odds Ratio, 95% CI	p value
Male sex	1.366 (0.581, 3.212)	0.475
Age	0.958 (0.895, 1.026)	0.221
BMI	0.947 (0.854, 1.050)	0.300
Charlson comorbidity index	0.938 (0.604, 1.455)	0.774
Surgical invasiveness index	0.906 (0.802, 1.024)	0.115
Comprehensive complication index	0.995 (0.961, 1.030)	0.766
Preoperative ODI	1.055 (1.021, 1.091)	0.001	1.059 (1.022, 1.097)	0.001
Psoas major muscle
Muscle CSA / vertebral CSA	2.436 (0.305, 19.434)	0.401
Muscle attenuation	1.132 (1.050, 1.220)	0.001	1.141 (1.054, 1.236)	0.001
Multifidus muscle
Muscle CSA / vertebral CSA	2.022 (0.081, 50.688)	0.668
Muscle attenuation	1.007 (0.975, 1.041)	0.657
Erector spinae muscle
Muscle CSA / vertebral CSA	0.422 (0.053, 3.340)	0.413
Muscle attenuation	1.004 (0.967, 1.041)	0.851

Abbreviations BMI, body mass index; CI, confidence interval; CSA, cross-sectional area; ODI, Ostwestry Disability Index

ISSN: 1471-2482