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The prevalence of back pain in a sample of 575 fifty-five-year-old residents of Malmö, Sweden, was studied and predisposing factors were analyzed. The point prevalence of back pain was 29%. Individuals with back pain had been less successful in a childhood intelligence test, had a shorter education and worked at physically more strenuous jobs. They were also less satisfied with their working conditions.
BERGENUDD et al. (Fri,) studied this question.