Skip to main content

Table 4 Univariate logistic and, when appropriate, linear regressions of the association between MRI patterns and axSpA diagnosis, anatomical sacroiliac joint variations, gender, childbirths, age and body mass index. Odds radios (confidence intervals) if other not stated

From: Differences in topographical location of sacroiliac joint MRI lesions in patients with early axial spondyloarthritis and mechanical back pain

  axSpA acc SIJ ISC Dysm CF BIBP Extrusion Gender Childbirths Agea BMIa
Unilateral BME 0.6 (0.2–1.8) 0.5 (0.2–1.3) 0.6 (0.2–1.4) 0.6 (0.2–1.7) 1.0 (0.3–3.2) 1.8 (0.7–5.1) 0.5 (0.2–1.5) 1.4 (0.6–3.6) 0.0 (− 2.7–2.7) − 1.1 (− 3.2–0.9)
Bilateral BME 2.0 (0.7–5.8) 1.4 (0.5–3.4) 1.6 (0.7–4.1) 2.0 (0.8–5.4) 1.2 (0.4–3.9) 0.4 (0.2–1.1) 1.5 (0.6–3.7) 0.8 (0.3–1.9) − 0.8 (− 3.5–1.8) 1.5 (− 0.4–3.5)
Unilateral FMD 0.6 (0.2–2.1) 0.3 (0.1–1.0) 0.8 (0.3–2.3) 6.4 (2.020.5)* 2.8 (0.9–9.2) 1.1 (0.3–3.6) 0.1 (0.00.6)* 3.8 (1.211.8)* 0.9 (− 2.1–4.0) − 0.6 (− 2.9–1.7)
Bilateral FMD 4.8 (1.813.1)* 1.4 (0.6–3.5) 0.8 (0.3–1.9) 0.8 (0.3–2.0) 0.8 (0.3–2.7) 0.5 (0.2–1.4) 1.6 (0.7–4.1) 1.0 (0.4–2.6) − 0.8 (− 3.4–1.8) 1.9 (− 0.1–3.9)
Unilateral sclerosis 0.6 (0.2–2.1) 1.4 (0.5–4.1) 1.5 (0.5–4.4) 1.4 (0.5–4.0) 1.3 (0.4–4.6) 0.1 (0.0–1.0) 0.1 (0.00.6)* 2.0 (0.7–5.8) − 1.7 (− 4.8–1.3) − 0.8 (− 3.1–1.6)
Bilateral sclerosis 1.4 (0.4–4.3) 0.7 (0.2–2.0) 2.6 (0.8–8.9) 1.6 (0.5–4.7) 3.1 (0.9–10.3) 0.5 (0.1–2.1) 0.2 (0.10.9)* 4.8 (1.416.3)* 1.2 (− 2.9–4.3) 2.2 (− 0.1–4.5)
Unilateral erosion(s) 2.6 (0.9–7.9) 0.3 (0.1–1.1) 1.0 (0.3–2.8) 2.2 (0.7–6.3) 1.4 (0.4–5.1) 0.5 (0.1–2.1) 0.2 (0.10.9)* 1.8 (0.6–5.1) − 0.5 (− 3.7–2.6) − 1.1 (− 3.5–1.3)
Bilateral erosion(s) 5.9 (2.017.4)* 1.5 (0.5–4.0) 1.0 (0.4–2.9) 0.6 (0.2–1.8) 0.4 (0.1–1.9) 0.2 (0.1–1.2) 2.2 (0.86.0)* 0.9 (0.3–2.4) − 1.3 (− 4.2–1.6) 1.2 (− 1.0–3.4)
Ligamentary BME 7.0 (2.519.6)* 1.9 (0.8–4.8) 2.8 (1.07.6)* 0.9 (0.3–2.2) 1.3 (0.4–3.9) 0.4 (0.1–1.2) 1.4 (0.6–3.6) 1.2 (0.5–2.9) 1.3 (− 1.4–3.9) 1.4 (− 0.6–3.4)
BME depth 5.9 (2.116.3)* 0.7 (0.3–1.8) 1,2 (0.5–3.2) 3.7 (1.49.7)* 1.0 (0.3–3.1) 0.4 (0.1–1.3) 1.0 (0.4–2.6) 0.8 (0.4–2.1) 0.2 (− 2.5–2.9) 0.0 (− 1.1–3.1)
FMD depth 4.7 (1.713.1)* 1.2 (0.5–3.1) 2.0 (0.7–5.5) 1.6 (0.6–4.1) 0.8 (0.2–2.8) 0.3 (0.1–1.2) 1.4 (0.5–3.5) 0.9 (0.4–2.3) 0.1 (− 2.7–2.9) 1.0 (− 1.1–3.1)
  1. Acc SIJ accessory sacroiliac joint, axSpA axial spondyloarthritis, BIBP bipartite iliac bony plate, BME bone marrow edema, BMI body mass index, dysm CF dysmorphic cartilaginous facets, extrusion lumbar disc extrusion, FMD fatty marrow deposition, ISC iliosacral complex
  2. *p < 0.05
  3. aLinear regressions and results reported as regression coefficients (confidence intervals)