[Assessing performance in new German states].

With the disbandment of the G.D.R., the following also ended: a) the central registration of all inpatients, which allowed statements to be made about hospital morbidity; b) the central tumor documentation, in which all tumor patients were registered up to 5 years after first treatment. Data relating to the clinic are being set up. We present a proven program of operating statistics set up by the working group for quality assurance.