Creating Funnel Plots
Funnel plots are scatterplots upon which confidence limits have been superimposed. They are useful when observations for different areas are based on varying sample sizes. The funnel shaped confidence limits indicate that as sample sizes decrease, an observation must be further from the regional/national average to be considered significant different. You can read more by clicking the links below.
You can also view an example Bubble, Funnel and Scatterplot reports by clicking here.
If you wish to trial the InstantAtlas & the Funnel Plot template, please contact the Support Team or call +44 131 624 8935.
- Presenting Performance Indicators*
- Quantifying Performance*
- Spiegelhalter D. Funnel plots for institutional comparison. Quality & Safety in Health Care 2002; 11: 390-391
* These resources are provided with the explicit permission of the Eastern Region Public Health Observatory (www.erpho.org.uk)