[Epidemiology of diseases and handicaps in the elderly]

In order to obtain valid information on incidence and prevalence of diseases and disabilities in elderly patients, careful cross sectional and longitudinal studies have to be performed. For valid information, the method of comprehensive geriatric assessment must be used which includes test for physical, mental, and social functions. Information from such studies is needed for prevention, treatment, and rehabilitation, as well as for health policies in the 1990. Although per capita health expenditure peaks in old age, presently "geriatric epidemiology" does not exist in Germany.