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Table 3 Differences in MRI associations with symptoms, according to the symptom involved*

From: Longitudinal associations between incident lumbar spine MRI findings and chronic low back pain or radicular symptoms: retrospective analysis of data from the longitudinal assessment of imaging and disability of the back (LAIDBACK)

MRI findings with conceptual links to chronic low back pain

 

Associations with low back pain OR (95% CI)

Associations with radicular symptoms OR (95% CI)

p-value for interaction

Endplate changes (any)

1.0 (0.2-5.2)

1.1 (0.3-4.3)

0.90

Endplate changes (type I)

1.7 (0.3-9.5)

1.0 (0.2-4.7)

0.52

Facet joint hypertrophy

2.2 (0.5-9.6)

0.6 (0.1-2.3)

0.12

Annular fissures

4.6 (0.9-24.2)

0.7 (0.1-3.9)

0.065

Disc height narrowing

0.8 (0.1-7.3)

1.5 (0.3-8.8)

0.59

Disc dessication

1.6 (0.4-6.7)

1.4 (0.4-4.9)

0.81

Disc bulging

2.2 (0.4-12.5)

0.7 (0.1-3.9)

0.13

MRI findings with conceptual links to both chronic low back pain and radicular symptoms

Spondylolisthesis

8.9 (0.8-102.7)

1.5 (0.1-17.5)

0.41

Disc protrusions

1.2 (0.2-6.2)

0.9 (0.2-3.7)

0.77

MRI findings with conceptual links to radicular symptoms

Central canal stenosis

4.2 (0.1- 338)

1.8 (0.1-∞)

NA†

Disc extrusions

1.0 (0.02-11.1)

5.4 (0.7-∞)

NA†

Nerve root impingement

1.4 (0.02-18.2)

4.1 (0.5-∞)

NA†

Lateral recess stenosis

6.3 (1.5-25.6)

2.8 (0.6-14.3)

0.45

  1. *primary MRI predictors of interest in bold; †p-values for interaction were not calculable due to the presence of zero cell counts.