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Table 5 Exploring pain, ODI, and work status in patients with grade 0 versus grade 1–2 multifidus muscle fat in patients included in the predictor analysisa

From: Fat in the lumbar multifidus muscles - predictive value and change following disc prosthesis surgery and multidisciplinary rehabilitation in patients with chronic low back pain and degenerative disc: 2-year follow-up of a randomized trial

  Rehabilitation Surgery
Grade 0 fat at pre-treatment (n = 31) Fat grad 1-2 at pre-treatment (n = 33) p-value Grade 0 fat at pre-treatment (n = 36) Fat grade 1-2 at pre-treatment (n = 47) p-value
Pain baseline (mean (SD)) 75.1 (11.7) 70.8 (14.2) 0.19* 70.5 (15.6) 65.5 (15.8) 0.16*
Pain 2 year (mean (SD)) 50.4 (28.9) 42.8 (26.5) 0.29* 25.9 (28.2) 33.3 (27.1) 0.24*
ODI baseline (mean (SD)) 42.8 (8.6) 41.8 (8.0) 0.65* 40.0 (8.0) 44.1 (10.6) 0.05*
ODI 2 year (mean (SD)) 28.9 (15.1) 25.5 (12.3) 0.33* 15.0 (17.1) 22.4 (14.6) 0.04*
Work status baseline (n / % working) 4 (12.9) 7 (21.2) 0.51# 12 (33.3) 8 (17.4) 0.12#
Work status 2 year (n / % working) 15 (48.4) 11 (33.3) 0.11# 24 (72.7) 22 (46.8) 0.04#
  1. ODI Oswestry Disability Index
  2. *Independent-samples t-test
  3. #Chi-Square Test (Continuity Correction)
  4. a n = 144 for pain, n = 147 for ODI, n = 137 for work status