Table 3

Summary of multivariate analysis models for FI and muscles cross-sectional area interactions with degenerative and structural parameters.

Independent VariablesORMultivariate Analysis (95% CI) P Adjusting Factors
(Dependent Variables)
FIa
 Back pain8.751.85–39.650.006Sex, age, and BMI
 ODI3.411.12–10.310.030Sex, age, and BMI
P muscle
 Back pain3.611.30–10–20.015Sex, age, and BMI
 ODI4.131.52–11.20.005Sex, age, and BMI
 Disc height, mmb 8.063.07–21.20.000Sex, age, and BMI
ES muscle
 Disc height, mmb 5.322.10–13.430.000Sex, age, and BMI
MF muscle
 Disc height, mmb 4.711.98–11.460.001Sex, age, and BMI

  • Abbreviations: BMI, body mass index; ES, erector spinae; FI, fatty infiltration; MF, multifidus; ODI, Oswestry Disability Index; P, psoas.

  • ↵a FI > 30% of total paravertebral muscles volume.

  • ↵b Average disc height from T12 to S1.