Abstract
Incidents during medication process account high rates in most hospitals. Moreover, medical staffs continuously cause similar incidents. It is effective to identify the key defective work method to prevent these incidents. Therefore, it is necessary to describe the work method of medication process to understand the problem for the improvement of work method. This paper proposes a method to analyze the trend of medication incidents based on work process described with work elements. This method describes the medication process with work elements and components. Then, this method identifies the work element that induced a medication error. Finally, the trend of medication incident is grasped by collecting incidents during a certain period to detect defective work method to improve. The application of the proposed method to a hospital identified the key defective work method and decreased the number of incidents. Moreover, medication processes of three hospitals are described comparative with the number of incident. As a result the method also enables to identify problematic work method.