Der Schmerz
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Among the possible reasons for low back pain, psychological factors are getting more attention. Early assessment of the stage of chronicity is important for successful therapy. The aim of the present study was to analyse the applicability of the Mainz Pain Staging System (MPSS) for chronic back pain outpatients. ⋯ The present study confirms the significance and usefulness of the MPSS applied to outpatients with back pain. To assess completely the stage of chronicity, psychological and physical/functional parameters should also be obtained.