PDCA and PDSA are two process control and quality improvement models that are often used within continuous improvement and quality management methods.
PDCA is an acronym for Plan – Do- Check – Act . It is a cyclical process that serves to achieve improvements in processes and achieve goals.
- Plan: In this phase we identify goals, plans and procedures for achieving them. We analyze data and information, assess the current state and set goals for improvement.
- Execute (To): In this phase we implement the proposed plans and procedures. We introduce changes and implement a new process or improvement.
- Check: In this phase, we collect data and information about the changes and processes made . We analyze them and compare them with the goals and standards from the planning phase. We will check whether the results achieved are in line with expectations and standards.
- Act: We take action based on results and analysis. If the results are positive, we maintain the new process. If the results are negative, we take corrective measures and start a new PDCA cycle.
PDSA stands for Plan -Do-Study- Act . It is a similar cyclical process to PDCA, which is often used within a quality improvement method known as the improvement cycle.
PDCA and PDSA are similar models but differ in the nomenclature of some phases. Both models support continuous improvement, systematic analysis and process management in order to achieve better results and increase quality.
