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Table 3 Associations between physical work load and fear-avoidance beliefs on LBP. Cases with previous LBP

From: The predictive effect of fear-avoidance beliefs on low back pain among newly qualified health care workers with and without previous low back pain: a prospective cohort study

   1-7 days of LBP 8-30 days of LBP > 30 days of LBP
Model A   P-value OR CI 95% P-value OR CI 95% P-value OR CI 95%
Physical work load High 0.012 1.92 1.15-3.22 0.00 2.88 1.75-4.72 0.00 3.47 2.05-5.87
  Medium 0.01 1.93 1.17-3.16 0.004 2.07 1.27-3.40 0.00 2.80 1.67-4.72
  Low - - - - - - - - -
  FAB-work 0.131 1.21 0.95-1.54 0.023 1.13 1.04-1.65 0.00 1.53 1.21-1.93
Physical work load High 0.008 1.87 1.18-2.97 0.00 2.45 1.60-3.87 0.00 3.37 2.11-5.36
  Medium 0.03 1.98 1.27-3.10 0.003 1.93 1.25-3.00 0.00 2.77 1.75-4.41
  Low - - - - - - - - -
  FAB-ph.activity 0.322 1.10 0.91-1.40 0.405 1.08 0.90-1.31 0.012 1.28 1.06-1.56
Model B           
Physical work load High 0.045 1.76 1.01-3.07 0.00 2.93 1.70-5.06 0.00 3.08 1.74-5.45
  Medium 0.013 1.97 1.15-3.37 0.001 2.44 1.42-4.19 0.00 3.05 1.74-5.35
  Low - - - - - - - - -
  FAB-work 0.104 1.24 0.96-1.61 0.038 1.31 1.02-1.69 0.00 1.59 1.23-2.04
Physical work load High 0.072 1.59 0.96-2.62 0.00 2.41 1.48-3.95 0.00 2.90 1.74-4.83
  Medium 0.011 1.86 1.15-3.00 0.002 2.01 1.30-3.39 0.00 2.80 1.71-4.61
  Low - - - - - - - - -
  FAB-ph.activity 0.734 1.04 0.84-1.28 0.584 1.06 0.86-1.30 0.03 1.26 1.02-1.55
  1. Model A: No adjustments
  2. Model B: Adjusted for age, smoking, leisure time physical activity, body mass index, emotional job demands and influence at work