"A key question in quality improvement is ‘What works?’ More and better use of data from SPC-projects can strengthen the evidence base and lead to more effective quality improvement strategies. Applying ITS analysis should be a matter of routine when SPC data are used for impact assessment."
Statistical process control and interrupted time series: a golden opportunity for impact evaluation in quality improvement
A Fretheim, O Tomic
BMJ Quality and Safety 2015;24:748-752 doi:10.1136/bmjqs-2014-003756
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