Disability, perceived health, and risk of death in a cohort of elderly

An elderly cohort has been submitted to a five-year mortality follow-up in order to evaluate the relationship between environment, social and health conditions and survival probability. Particular attention has been directed to disability measure proposed by OECD (Organization for Economic Co-operation and Development). An extension of Cox multiple regression model has been used. Results show that the social and living conditions are not associated with survival probability. On the contrary, disability is a strong determinant of mortality risk and subjective health status is a modifier of its effect. Following disability level is an indicator of long-term health status and health services needs.