Table 3 Odds ratios (95% confidence intervals) of ISI by quartiles of spinal cord compression angle.

From: Correlation of spinal cord compression angle and increased signal intensity on MRI in patients with ossification of posterior longitudinal ligament

Spinal cord compression angle

Participants (n)

Patients with ISI (n)

Crude odds ratio (95% confidence interval)

Multivariate adjusted

Q1 (≤ 21.7°)

30

10

1 (reference)

1 (reference)

Q2 (21.8°–31.3°)

30

14

1.750 (0.616–4.973)

1.383 (0.431–4.436)

Q3 (31.4°–39.6°)

29

16

2.462 (0.858–7.065)

1.973 (0.603–6.450)

Q4 (> 39.6°)

29

24

9.600 (2.816–32.733)

3.858 (0.974–15.278)

P for trend

  

 < 0.01

0.046

  1. The spinal cord compression angle was categorized into quartiles, with a higher quartile indicating a higher spinal cord compression angle.
  2. ISI, increased signal intensity.
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