Process control chart of the mean monthly time between emergency department assessment/bronchodilator treatment and emergency department discharge. Process.

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Presentation transcript:

Process control chart of the mean monthly time between emergency department assessment/bronchodilator treatment and emergency department discharge. Process control chart of the mean monthly time between emergency department assessment/bronchodilator treatment and emergency department discharge. Post-test of change (shown by the vertical line) on the chart indicates a variance of special cause as noted by presence of ≥8 points on the same side of the center line and by the presence of 2 of 3 successive points on the same side of the center line and >2 SDs from the center line. The center horizontal line denotes the mean, and the upper and lower lines are the upper control limit (UCL) and lower control limit (LCL), respectively. Jennifer R Cockerham et al. Respir Care 2016;61:1573-1579 (c) 2012 by Daedalus Enterprises, Inc.