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Table 4 Risk factors of the occurrence of ASD

From: Low lumbar multifidus muscle status and bone mineral density are important risk factors for adjacent segment disease after lumbar fusion: a case–control study

Risk factor

Logistic Regression

P Value

Odds ratio

95% Confidence interval

rCSA of MF at L3–4 level

0.022*

0.116

0.019–0.729

rFI of MF at L3–4 level

0.337

0.406

0.064–2.562

rCSA of MF at L4–5 level

0.427

0.475

0.076–2.985

rFI of MF at L4–5 level

0.005*

17.974

2.349–137.505

rCSA of MF at L5–S1 level

0.123

0.251

0.043–1.457

rFI of MF at L5–S1 level

0.024*

7.140

1.298–39.292

Bone density

0.013*

0.081

0.011–0.590

  1. *Statistical significance
  2. rCSA indicates relative cross-sectional area, rFI indicates relative fat infiltration, ES erector spinae, MF multifidus
  3. A P value of < 0.05 was considered to indicate statistical significance