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Table 1 Baseline characteristics

From: The effect of changing movement and posture using motion-sensor biofeedback, versus guidelines-based care, on the clinical outcomes of people with sub-acute or chronic low back pain-a multicentre, cluster-randomised, placebo-controlled, pilot trial

  Movement Biofeedback Groupn = 58 Guidelines-based Care Groupn = 54 p-value
Age (years, mean) 39 (SD 12) 48 (SD 12) 0.013
Gender (women, proportion) 30 (52 %) 31 (57 %) 0.729
Pain episode duration (weeks, median)* 52 (IQR 17, 52) 52 (IQR 16, 312) 0.184
Activity limitation (RMDQ-23) (0–100 scale, mean) 51.1 % (SD 38.1) 49.1 % (SD 30.1) 0.758
Activity limitation (PSFS) (0–100 scale, mean) 60.2 (SD 10.1) 57.9 (SD 34.8) 0.660
Pain intensity (QVAS) (0–100 scale, mean) 60.0 (SD 23.6) 61.0 (SD 6.6) 0.758
Fear of movement (FABQpa) (0–24 scale, mean) 13.8 (SD 6.8) 14.4 (SD 8.0) 0.674
  1. RMDQ-23 = Roland Morris Disability Questionnaire (23 item version) where low scores are better
  2. PSFS = Patient Specific Functional Scale, converted to a 0–100 scale where low scores are better
  3. QVAS = Average of four pain intensity VAS scales, where low scores are better
  4. FABQpa = Fear Avoidance Beliefs Questionnaire (physical activity subscale)
  5. *Data presented are median (IQR) due to skew in data, group comparison undertaken using ordered logit regression clustered by site