A retrospective 10 year analysis of the reasons for admitting patients in a university hospital CAPD or hemodialysis program is performed. More specifically, the influence of age as indicator has been investigated. It appears that since 1983, the CAPD population becomes progressively younger and the hemodialysis population older. This is mainly due to preferential admission in CAPD of young diabetics and because of patients preference. The reasons for dropout and prognosis after transfer to another mode of treatment are discussed.