Evidence Based Practice (EBP), Quality Improvement (QI) and Research are tools for problem solving and inform each other. 
- QI analyses existing data to improve systems related to business processes and outcomes (ie, cost, productivity, quality). Audit is a QI activity.
- EBP analyses existing data for purposes of ranking evidence that will be used to answer questions that guide practice.
- Research validates and refines existing data or generates new knowledge to influence nursing practice, systems and policies. 
As a result of these activities a change in practice is often indicated, with appropriate change management strategies required for effective implementation.