Plan-do-study-act (PDSA) is an iterative problem-solving model for implementing change. It consists of four stages.

1. Plan: What is the objective? How will you measure success?

2. Do: Try a small-scale test.

3. Study: Analyze the data gathered by the test.

4. Act: Determine what modifications need to be made and prepare for another test, as needed.

See also: Plan-Do-Study-Act (PDA) Worksheet

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