Defining Systems to Evaluate System Efficiency and Effectiveness

This paper focuses on the application of systems thinking, systems theory, and systems evaluation theory (SET) in evaluating modern day systems. SET consists of three steps purposively sequenced with each being a prerequisite for the success of the next step. The first foundational step is to define the system. Systems thinking provides theoretical rationale for defining the system boundaries, components, and relationships. However, there is no literature describing how to define these system elements. Using an example from the evaluation of several United States cardiac care systems, the paper shares a number of methods used to define the system boundaries, components, and relationships. The paper describes how each of these elements informs the evaluation of step two of SET—evaluating system efficiency. The discussion shares lessons learned, and notes the relationship between methods used in system and program evaluation.