정도관리 개선활동을 통한 파레토 분석

Abstract

Pareto analysis through quaity improvement activities is the study of related subjects to determine if one is more significant than the others and used to identify the most important item in group of items. The Pareto chart breaks down an item into its component parts and then arranges and displays those parts in order of importance. Pareto analysis is used to focus problem-solving activities, so that the area causing the most difficulty is addressed first. We evaluated error problems in clinical chemistry laboratory from January 1997 to December 1998. We used systems thinking for cause and effect diagram for problem-solving and Pareto analysis to solve the problem factors of analytical performance of Hitachi 7150 system for two years. We found that total problems reduced 33.5 percentage during one year after educating system thinking, cause and effect analysis. We concluded that 81.19 percentage of the total problems controlled by 23% of the items that are two factors. Upon examination, this 80⁄20 rule(Pareto distribution) proved true in our working area. We use the Pareto distribution to achive an 80% quality improvement by working 20% of the problem causes. We think Pareto analysis is a tool for problem-solving during quality improvement activities for total quality management in medical laboratory science.