Over half (52.9%) of the participants had low back pain during the
previous 3 months, while the prevalence of pain in the legs, upper arms, neck, wrists, and lower arms
were 14.8%, 8.9%, 3.0%, 2.3%, and 2.1%, respectively. The average final RULA grand score of 5.25 corresponded
to an action level of 3, which indicated the need for prompt medical investigation and work
habit changes.