RSS homepage

Edinburgh Local group
Archives: 2005-2006


Tuesday 11th October 2005 at 18:00, International Centre for Mathematical Sciences, 14 India Street, Edinburgh.

Shewhart charts in the monitoring of the process of stroke care

G Robin Henderson (National Stroke Audit Coordinator, NHS Lothian)

Stroke is the third most common cause of death and the most common cause of severe physical disability in Scotland.  Since 2001, data have been collected on the process of care of stroke patients at three major hospital in Lothian; since 2002 as part of the Scottish National Stroke Audit.  Data collected include: -

1 - time between admission and brain imaging
2 - proportion of patients receiving acute stroke unit care
3 - proportion of ischaemic stroke patients discharged on a statin.

Shewhart control charts, widely used in industry since the 1920s, have not, as far as those involved in the Audit within Lothian are aware, been used with data on the process of the care of stroke patients.  The talk will explain the construction of the charts and refer to the various tests for evidence of special causes of variation that may be applied. 

Charts for the hospitals, created using Release 14 of the MINITAB? statistical software, will be presented.  The charts demonstrate changes in the process of stroke care attributable to: -
changes in the structure of the stroke service
dissemination of clinical research findings.

Reference will be made to current research in the application of control charts in healthcare and to the link between control charting and hypothesis testing.

Download .doc poster for this talk

Tuesday 8th November 2005 at 18:00, International Centre for Mathematical Sciences, 14 India Street, Edinburgh.

Population projections for Scotland - the process and the results

Chris Shaw (Government Actuaries Department) and Cecilia Macintyre (General Registry Offices for Scotland)

The Government Actuary's Department produces population projections on behalf of the Registrar General for Scotland. This talk will outline the assumptions which are built into the recent projections and describe the process which was used to agree these assumptions. A summary of the results will be provided along with a plan for future outputs.

Download .doc poster for this talk

Tuesday 10th January 2006 at 18:00, International Centre for Mathematical Sciences, 14 India Street, Edinburgh.

Using linked micromap plots to produce graphical summaries of
large financial datasets

Gordon Blunt (CACI Ltd)

This talk will describe how linked micromap (LM) plots can be used to develop graphical summaries of large financial services datasets.  In this context, LM plotting can be thought of as a method that combines the techniques of exploratory data analysis and statistical graphics, but which maintains the spatial context of the data.
Many datasets have pronounced geographic differences for which traditional statistical summaries - in isolation - are inadequate; on the other hand, choropleth maps show geographic patterns, but on their own cannot convey the range of data to be presented.  LM plots are one solution to this problem, and have the following characteristics.
1. They display several sequences of panels that are linked by position.
2. Data are sorted by the variable(s) of interest, to improve perception between sequences of panels.
3. The dataset is partitioned into these relatively small panels to allow attention to be focused on small areas at a time.
4. They draw on principles from a number of disparate disciplines, including statistics (especially exploratory data analysis), cartography and psychology.

Download .doc poster for this talk

Tuesday 7th February 2006 at 18:00, International Centre for Mathematical Sciences, 14 India Street, Edinburgh.

Setting and evaluating the effectiveness of environmental policy - does the statistician have a role?

Marian Scott (University of Glasgow)

Environmental policy is set through international protocols (e.g. the Kyoto convention) and European directives, enacted in national legislation, and implemented, monitored and managed by regulators (Environment Agencies). What is the evidence base for policy, and for the evaluation of its effectiveness, and do statisticians have a role? In this talk, through several case studies, the quantitative and probabilistic nature of the language of policy and the evidence-base is explored and the role of statisticians is discussed.

Download .doc poster for this talk

Tuesday 11th April 2006 at 18:00, International Centre for Mathematical Sciences, 14 India Street, Edinburgh.

Productivity Measurement and Efficiency: A Bayesian View

Mark Steel (University of Warwick)

In this talk I intend to give an overview of the important area of productivity analysis and the uses of Bayesian statistics in this field. I will focus on stochastic frontier models, which have been used in economics since the late 70's to measure concepts of efficiency in production and cost reduction. Various extensions of the basic model are presented and I will mention parametric and nonparametric approaches to inference. The talk will be illustrated with examples involving hospitals and dairy farms.

Download .doc poster for this talk


This page is maintained by Adam Butler