Table 4

 Effect of the intervention between the intervention and control group, measured by prevalence ratio (PR; n=109)

Outcome variablePR (95% CI)*†
Regional pain
 Dominant proximal UE0.9 (0.7 to 1.2)
 Non-dominant proximal UE1.0 (0.8 to 1.4)
 Dominant distal UE0.8 (0.5 to 1.3)
 Non-dominant distal UE1.2 (0.6 to 2.2)
RULA non-neutral posture
 Dominant UE0.9 (0.9 to 1.0)
 Non-dominant UE0.9 (0.8 to 0.9)
 Spine and lower extremities0.8 (0.5 to 1.2)
 Full dominant RULA0.9 (0.9 to 1.0)
 Full non-dominant RULA0.8 (0.8 to 0.9)
Hand activity level (HAL) score
 Dominant UE0.9 (0.8 to 1.0)
 Non-dominant UE1.4 (1.2 to 1.6)
  • *PR: how large the prevalence of the health or exposure outcome is in the intervention group relative to the control group.

  • †PR model: dichotomous dependent variable (regional pain, RULA or HAL) and intervention (no/yes) as the explanatory variable of interest.

  • RULA, rapid upper limb assessment; UE, upper extremity.