Neck and shoulder symptoms among men in machine operating, dynamic physical work and sedentary work.

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Abstract
Data on the occurrence of neck and shoulder symptoms and some qualities of work and leisure-time activities were gathered with a postal questionnaire sent to 1 174 machine operators, 1 045 carpenter, and 1 013 office workers. They were all men in the age range of 25-49 years. The response rate was 67-76%. The lifetime cumulative incidence of neck and shoulder symptoms was 81% for the machine operators, 73% for the carpenters, and 57% for the office workers. About half of the two groups of manual workers and 24% of the office workers had symptoms during the last 7d. Pain in the arms was indicated by 14-17% of the manual workers. Symptoms during more than 30 d within the last 12 months were also more common among the manual workers symptoms than the carpenters. In a multivariate logistic regression analysis occupation, working in twisted or bent postures, age, draft, and job satisfaction proved to be significant risk indicators for neck and shoulder symptoms.