BACKGROUND: The economic impact of personality disorders on UK health services is unknown. AIMS: To test the hypothesis that people with personality disorders have higher mean health and non-health costs compared with those without personality disorders. METHOD: Prospective cohort study design. A total of 303 general practice attenders were followed-up I year after they had been assessed for the presence of personality disorders. Costs were estimated in pound sterling at 1999 price levels. RESULTS: The mean total cost for patients with personality disorders was pound sterling 3094 (s.d.=5324) compared with pound sterling 1633 (s.d.=3779) for those without personality disorders. Personality disorders were not independently associated with increased costs. Multivariate analyses identified the presence of a significant interaction between personality disorders and common mental disorders and increased total costs (coefficient=499, 95% CI 180.1-626.2, P=0.002). CONCLUSIONS: Personality disorders are not independently associated with increased costs. An interaction between personality disorders and common mental disorders significantly predicts increased total costs.
BACKGROUND: The economic impact of personality disorders on UK health services is unknown. AIMS: To test the hypothesis that people with personality disorders have higher mean health and non-health costs compared with those without personality disorders. METHOD: Prospective cohort study design. A total of 303 general practice attenders were followed-up I year after they had been assessed for the presence of personality disorders. Costs were estimated in pound sterling at 1999 price levels. RESULTS: The mean total cost for patients with personality disorders was pound sterling 3094 (s.d.=5324) compared with pound sterling 1633 (s.d.=3779) for those without personality disorders. Personality disorders were not independently associated with increased costs. Multivariate analyses identified the presence of a significant interaction between personality disorders and common mental disorders and increased total costs (coefficient=499, 95% CI 180.1-626.2, P=0.002). CONCLUSIONS:Personality disorders are not independently associated with increased costs. An interaction between personality disorders and common mental disorders significantly predicts increased total costs.
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