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Table 2 Associations between physical work load and fear-avoidance beliefs on LBP. Cases without 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 0.091 1.90 0.90-3.98 0.184 1.65 0.79-3.47 0.149 1.96 0.79-4.86
  Medium 0.579 1.23 0.59-2.60 0.531 1.26 0.61-2.61 0.183 0.46 0.15-1.43
  Low - - - - - - - - -
  FAB-work 0.586 1.11 0.76-1.63 0.443 1.16 0.80-1.68 0.00 2.08 1.42-3.04
Physical work load High 0.563 1.19 0.06-2.14 0.009 2.45 1.25-4.79 0.062 2.15 0.96-4.80
  Medium 0.922 1.03 0.58-1.84 0.058 1.91 0.98-3.76 0.828 0.90 0.35-2.30
  Low - - - - - - - - -
  FAB-ph.activity 0.827 1.03 0.81-1.31 0.902 1.02 0.78-1.33 0.008 1.54 1.19-2.13
Model B           
Physical work load High 0.261 1.61 0.70-3.67 0.483 1.33 0.60-2.98 0.255 1.82 0.64-5.10
  Medium 0.955 1.02 0.45-2.35 0.781 0.89 0.40-1.99 0.107 0.32 0.08-1.28
  Low - - - - - - - - -
  FAB-work 0.711 1.08 0.71-1.65 0.66 1.10 0.72-1.68 0.00 2.26 1.45-3.51
Physical work load High 0.737 1.12 0.59-2.12 0.098 1.85 0.89-3.82 0.165 1.88 0.77-4.57
  Medium 0.611 0.85 0.45-1.61 0.47 1.31 0.63-2.74 0.572 0.75 0.27-2.07
  Low - - - - - - - - -
  FAB-ph.activity 0.565 1.08 0.83-1.42 0.724 1.06 0.78-1.42 0.005 1.66 1.17-2.36
  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