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The general aim of this exploratory study was to enhance understanding of the nature of the anxiety symptoms found in workers with a persistent musculoskeletal disorder (MSD). The primary objective was therefore to document the presence, intensity, and temporal changes in GAD and its maintenance factors, using the model developed by Dugas et al. (1998). These factors include intolerance of uncertainty, worries, negative problem orientation, beliefs about the usefulness of worrying, cognitive avoidance, and depression. The secondary objectives were as follows: (1) to document, on an exploratory basis, the relationships between the component factors of the GAD model developed by Dugas et al. (1998) and the biopsychosocial factors already recognized in the MSD field, and (2) to document the relationship between all these factors and the return to work.
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