In this method, to analyze the various
body parts, they were divided into two groups (A
and B). In group A, postures of body parts such as
trunk, neck, and legs are checked, and the force/load
score is add to the group A score. In group B, upper
arms, lower arms, and wrists are scored and coupling
score is added to this score. Thus, these body parts
are scored based on their positions and degree of
deviation from normal posture. Then, by combining
A and B scores, the C score is obtained.
Subsequently, the activity score is added to C score
and the total REBA score is obtained. The final
score of REBA is divided into 5 levels of risk from 0
to 4 that correspond to negligible, low, moderate,
high and very high, respectively.