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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Gastroenterol Clin North Am. 2013 Sep;42(3):599–618. doi: 10.1016/j.gtc.2013.05.005

Figure 3.

Figure 3

Schematic of the Plan-Do-Study-Act Cycle, a simple and powerful scientific method for quality improvement whereby a team plans a test or observation, carries it out on a small scale, studies the results, and refines the change.