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Table 1 Group characteristics and results of pressure pain tests

From: Chronic low back pain and sick-leave: a functional magnetic resonance study

Variables CLBP_L (n = 24) CLBP_NL (n = 25) Control (n = 25) P value
BMI (Kg / m2) 27.5 (25.1–29.6) 26.3 (24. 8-29.5) 25.8 (24. 6-29) 0.678
Education, (years) 10.5 (8-11) * # 11 (11-15) 11 (9-15) 0.025
Disability (QRM) 18 (17-19.8) 14 (11–16.8) NA 0.003
NRS 8 (8-8.75) 8 (6. 5-8. 7) NA 0.709
depressive symptoms - N (%) 12 (50) # 8 (33.3) 3 (12) 0.016
IDATE-T 50.5 (41. 5-55.5)* # 42 (35. 7–52) 34 (30-43) < 0.001
IDATE-E 45 (37. 7–51)) * # 39 (35. 5-42) 38 (30-45) 0.019
FABQ-physic 18 (10-22.2) 10.5 (3-17.2) NA 0.056
FABQ-work 33,5 (26. 8-39.8) 15,5 (5. 2-31) NA 0.001
Pressure (Kg) 5 (4. 5-7.5) 5 (4. 5-6) # 7 (5. 5-7.5) 0.008
  1. Values were expressed by median and interquartile range (1st and 3rd quartiles) * P < 0.05 vs. CLBP_NL; # P < 0.05 vs Control / CLBP_NL: individuals with low back pain and sick leave / CLBP_L: individuals with low back pain / P value: Hypothesis test of difference between the three groups and their categories / BMI: body mass index / Pressure: weight in Kg used to check pain threshold