Quality improvement (QI) is a systematic, formal approach to the analysis of practice performance and efforts to improve performance. A variety of approaches—or QI models—exist to help you collect and analyze data and test change.
Quality management ensures that an organization, product or service is consistent. It has four main components: quality planning, quality assurance, quality control and quality improvement. Quality management is focused not only on product and service quality, but also on the means to achieve it.