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Table 3 Associations between the amount of fat in the lumbar multifidus muscles and LBP in 40 year-old men (n = 199) and women (n = 213).

From: Are MRI-defined fat infiltrations in the multifidus muscles associated with low back pain?

  Unadjusted Adjusted*
Fat infiltration LBP year LBP ever LBP year LBP ever
Men and women     
   Any 1.7 (1.1–2.6) 2.6 (1.5–4.4) 1.8 (1.2–2.8) 2.9 (1.5–5.5)
   Slight (grades 1 vs. 0) 1.5 (0.9–2.5) 2.5 (1.4–4.7) 1.6 (0.9–2.8) 2.9 (1.5–5.5)
   Severe (grades 2 vs. 0) 3.6 (1.4–9.7) 7.2 (1.6–32.4) 4.1 (1.5–11.2) 9.2 (2.0–43.2)
   Severe (grades 2 vs. 1) 2.5 (1.0–6.1) 2.8 (0.7–12.2) 2.5 (1.0–6.4) 3.2 (0.7–14.1)
Men     
   Any 1.4 (0.9–2.5) 2.8 (1.4–5.9) 1.5 (0.8–2.6) 3.0 (1.4–6.4)
   Slight (grades 1 vs. 0) 1.6 (0.8–3.0) 3.1 (1.4–6.4) 1.7 (0.9–3.3) 3.4 (1.5–7.7)
   Severe (grades 2 vs. 0) 1.9 (0.5–6.6) 5.7 (0.7–46.9) 1.7 (0.5–6.2) 5.7 (0.7–48.0)
   Severe (grades 2 vs. 1) 1.2 (0.4–4.0) 1.9 (0.2–15.2) 1.0 (0.3–3.5) 1.7 (0.2–14.2)
Women     
   Any 2.4 (1.3–4.5) 2.7 (1.2–6.1) 2.8 (1.4–5.7) 3.2 (1.3–7.9)
   Slight (grades 1 vs. 0) 1.6 (0.6–4.1) 2.4 (0.8–6.8) 1.7 (0.7–4.5) 2.7 (0.9–8.1)
   Severe (grades 2 vs. 0) 8.3 (1.5–44.5) 9.2 (1.0–84.3) 11.6 (2.0– 66.7)* * 15.1 (1.5–154.3)* *
   Severe (grades 2 vs. 1) 5.1 (1.1–22.4) 3.8 (0.5–29.7) 6.7 (1.4–30.8) 5.7 (0.7–46.9)
  1. Data are expressed as odds ratios (95% confidence intervals).
  2. *Adjusted for BMI, physical activity, physical workload, andhours participating in sports;
  3. ** time in sports, and body weight remained significant in multivariate analyses.
  4. LBP, lower back pain; LBP ever, had ever experienced lower back pain; LBP year, had experienced lower back pain in previous year.