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Table 3 Association of SIJ variants with sex, age and BMI

From: Anatomical variation of the sacroiliac joints: an MRI study with synthetic CT images

 

Sex

Age

BMI

 

OR [95% CI]; p value

OR [95% CI]; p value

OR [95% CI]; p value

No variant

1.73 [0.87–3.38]; p = 0.11

0.99 [0.96–1.02]; p = 0.64

0.98 [0.91–1.06]; p = 0.64

Bipartite iliac bony plate

0.14 [0.06–0.31]; p < 0.001

0.99 [0.96–1.02]; p = 0.419

0.95 [0.89–1.01]; p = 0.13

Accessory joint

0.51 [0.22–1.17]; p = 0.11

1.02 [0.98–1.05]; p = 0.41

1.01 [0.94–1.09]; p = 0.82

Iliosacral complex

2.53 [1.38–4.64]; p = 0.003

1.02 [1–1.05]; p = 0.103

1.07 [1.00–1.14]; p = 0.04

Semicircular defect

0.67 [0.23–1.94]; p = 0.46

0.95 [0.91–0.99]; p = 0.01

1.02 [0.93–1.11]; p = 0.74

Crescent iliac bony plate

0.79 [0.42–1.47]; p = 0.45

0.98 [0.95–1.01]; p = 0.22

0.93 [0.87–0.99]; p = 0.03

Isolated synostosis

3.4 [0.56–20.63]; p = 0.18

1.11 [1.03–1.2]; p = 0.006

0.92 [0.78–1.09]; p = 0.33

Unfused ossification center

3.34 [0.21–53.8]; p = 0.4

0.86 [0.76–0.98]; p = 0.02

0.95 [0.77–1.17]; p = 0.61

Dysmorphic posterior part

0.22 [0.81–0.61]; p = 0.003

1.01 [0.98–1.04]; p = 0.49

1.03 [0.94–1.13]; p = 0.51

Extra SIJ facet superiorly

*

0.88 [0.86–0.9]; p < 0.001

1.18 [1.11–1.25]; p < 0.001

  1. Significant p values are marked in bold
  2. SIJ = sacroiliac joint; BMI = body mass index; OR = odds ratio; 95% CI = 95% confidence interval
  3. * = not estimable