Improvement in Work Ability, Psychological Distress and Pain Sites in Relation to Low Back Pain Prognosis: A Longitudinal Observational Study in Primary Care

Study Design.Prospective observational study pooled from two clinical cohorts.Objective.To investigate the longitudinal relation between multisite pain, psychological distress, and work ability with disability, pain, and quality of life.Summary of Background Data.Knowledge of prognostic factors is e