quest mental health data for improvement network run charts alison pickering senior information...
TRANSCRIPT
QuEST Mental Health Data for Improvement Network
Run ChartsAlison PickeringSenior Information Analyst
By the end of this session you will…
• know why we use run charts in improvement work
• be able to construct a run chart• understand how to read the run chart• know when to change the median• know how to find further support
Why Run Charts?
“Data have no meaning apart from their context”
W. Shewhart
Worked example
• NHS Somewhere was having trouble with their DNA rate, so they implemented a text reminder system in July 2011. Did it work?
MonthNumber of
DNAsJan-11 9Jan-12 6Jan-13 4
Monthly data
Month Number of DNAsJan-11 9Feb-11 8Mar-11 9Apr-11 6May-11 7Jun-11 5Jul-11 6Aug-11 8Sep-11 9Oct-11 6Nov-11 7Dec-11 6Jan-12 6Feb-12 7Mar-12 9Apr-12 9May-12 8Jun-12 6Jul-12 7Aug-12 8Sep-12 6Oct-12 8Nov-12 7Dec-12 5Jan-13 4
Create a line chart
Find your median
Month Number of DNAsJan-13 4Jun-11 5Dec-12 5Apr-11 6Jul-11 6Oct-11 6Dec-11 6Jan-12 6Jun-12 6Sep-12 6May-11 7Nov-11 7Feb-12 7Jul-12 7Nov-12 7Feb-11 8Aug-11 8May-12 8Aug-12 8Oct-12 8Jan-11 9Mar-11 9Sep-11 9Mar-12 9Apr-12 9
Add the median to your chart
Add titles and labels
Annotate chart with process changes
Run Chart Rules
There are four simple things to look for on a run chart to highlight whether there are significant changes happening:1. A shift2. A trend3. The number of runs4. An astronomical data point
A shift
A trend
Total number of data points Number up or down in a row to indicate special cause
5 to 8 5 or more9 to 20 6 or more21 to 100 7 or more
The number of runs
The number of runs
Data points
Lower limit
Upper limit
15 4 12
16 5 12
17 5 13
18 6 13
19 6 14
20 6 15
21 7 15
22 7 16
23 8 16
24 8 17
Data points
Lower limit
Upper limit
25 9 17
26 9 18
27 9 19
28 10 19
29 10 20
30 11 20
31 11 21
32 11 22
33 11 22
34 12 23
Data points
Lower limit
Upper limit
35 13 23
36 13 24
37 13 25
38 14 25
39 14 26
40 15 26
41 16 26
42 16 27
43 17 27
44 17 28
The number of runs
Astronomical point
Our example
Another example
Median = 3.9
Changing the median
Changing the median example
Conclusion
Source: xkcd.com
Further learning
• Reading:– QI Hub -
www.qihub.scot.nhs.uk/knowledge-centre/quality-improvement-tools/run-chart.aspx
– IHI - www.ihi.org/knowledge/Pages/Tools/RunChart.aspx
– Paper Adobe Acrobat Document
Further support
Alison PickeringSenior Information Analyst
QuEST Mental Health01312443284