Quality & Patient Safety

Patient safety Q&A

Patient Safety Monitor, July 1, 2010

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Q. What is a good way to measure whether a certain process is under control—that is, performing the way we expect it to?

A. A good tool to help monitor whether your processes are under control is the control chart. A control chart is simply a time series chart—sometimes called a run chart—that shows how the data points from your production run deviate from the specification, mean, or center point. If the process is starting to produce data points that are too big, you can make a few adjustments to reduce the size and bring the process back under control.

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