Comparison of data process operators with and without upper limb symptoms.

A prevalence survey, using medical interview and examination, ergonomic assessment and questionnaire, identified musculoskeletal symptoms in 143 data process operators (DPOs), in four data entry sections. Over 50 per cent of DPOs experienced symptoms at least three or more times per week. A characteristic clinical picture was described, in each of the shoulder-neck and lower arm areas. Scores on an upper limb symptom scale for each area were added, a group with the highest scores were designated cases (n = 41) and a comparison group was selected from those with the lowest scores (n = 28). The two groups were compared for a large number of personal, training, environmental, work organization, postural, and job demand variables. Statistically significant differences were found in two work organization variables, three job demand variables, three posture variables, an index of discomfort from glare, the General Health Questionnaire, and five dimensions of the Work Environment Scale. We concluded that musculo-skeletal symptoms have a multifactorial aetiology, related to postural factors, perceived job demand and the social climate of the work place.