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Table 4 Logistic regression analysis for screw misplacement

From: Lumbosacral pedicle screw placement using a fluoroscopic pedicle axis view and a cannulated tapping device

 

Odds ratio

95 % confidence interval

p value

Age

1.006

(0.967–1.047)

0.77

Male/female

0.942

(0.425–2.516)

0.94

Obesity (BMI ≥ or <25)*

3.593

(1.061–12.175)

0.040

Single-level/multi-level

3.683

(0.664–20.418)

0.14

No. of vertebrae

0.43

(0.150–1.254)

0.12

Disease

   

 Isthmic spondylolisthesis

1.000

  

 Degenerative spondylolisthesis

0.419

(0.101–1.729)

0.23

 Spinal canal stenosis

0.292

(0.071–1.200)

0.088

 Degenerative scoliosis*

8.893

(1.200–76.220)

0.046

 Vertebral fracture

0.875

(0.123–6.239)

0.89

  1. BMI body mass index, No. number
  2. *p < 0.05