The general objective of EPIAIM was to define a knowledge based environment to be used as a support tool during the different phases of an epidemiologic survey (planning, management, analysis). The main topics approached by EPIAIM were: i) the definition of eliciting modalities concerning the acquisition of knowledge about the conceptual structure of a survey; ii) the implementation of a Design-Management subsystem; iii) the design of a consultation system for the Epidemiologic Data Analysis (EDA); iv) the definition of user models in order to tailor the behaviour of the system to the specific user knowledge level.