Prevalence of and risk factors associated with work related musculoskeletal disorders among Benjarong’s ceramic informal labor in Samut-Sakorn, Thailand
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ABSTRACT: Work-related musculoskeletal disorders (WMSDs) had highly reported in Thai informal labor, resulting in a chronic injury which impacted on productivity and quality reduction. This study aims to survey the prevalence of WMSDs in the past 12 months and 7 days in anatomical area with relationship of the individuals, work tasks and psychosocial factors. Twenty – seven labors who worked in coloring and lining task were recruited. They were measured individual factors, work-related factors by RULA for working posture, workstations (table and chair), psychosocial factors by SPST-20 for stress and surveyed the prevalence of WMSDs by modified Nordic Musculoskeletal questionnaire. Work-related factors showed working experiences were 21.07±12.61 years, working hours were 8.32±1.40 hours, resting from work hour were 1.46±0.72 hours and they were medium risk of working posture for 51.85%. In psychosocial factors, they were a low level of stress. The results revealed the top three prevalence in the late 12 months were lower back (37.04%), shoulder (25.93%) and knee (22.22%). In the late 7 days, the top three prevalence were lower back (37.04%) and shoulder (37.04%), wrist/hand (33.33%) and upper arm (25.93%), respectively.
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