Group Modeling in System Dynamics - a Case Study

Abstract

A group modeling process, using system dynamics, is used to model a stroke ward. The purpose is to model quantitative and qualitative factors useful in room planning and dimensioning and to contribute to research studying the usefulness of simulation modeling as a planning tool in the design of new health care environments. The process is carried out within tight constraints on time and resources, while striking a balance between developing the group process and achieving a model. The group is intended to be representative consisting of different interested parties and is too large to benefit a good group process. Participants have different agendas and there is ambiguity of problems and goals. The challenge is to develop a model within the resource constraints and yet meaningful to the stakeholders, by using process consultation methodology. The modeling moves from basic causal loops to a model of patient flows. The difference between discrete and continuous modeling raises the issue of possible causes of goal erosion. Getting access to data turns out to be a major problem and in the end limits the scope and usefulness of the models. A “flight simulator” is constructed for testing policies to attain optimal dimensioning of the ward