This interactive map shows variations in the pattern of increase in emergency admissions by primary care trust (PCT) area. The research team used the 152 PCTs that existed in England at the end of 2008/09, with indirect standardisation (adjusting for the age and sex differences in the population) to calculate the expected level of emergency admissions based on the national average.
Comparing this to the observed number of emergency admissions gives a standardised admission ratio (SAR) that can be used to compare across PCT areas. A SAR value above one indicates that the number of admissions observed is greater than that expected, and this figure shows the change in SAR values over the five years.
On the map, light-coloured areas have not increased as much as expected, whereas dark-coloured areas have increased more than expected. The areas with the highest increases are largely around London and other urban areas in the Midlands, North West and North East. However other areas bucked this trend, for example Cumbria in the North West had a higher than average baseline admission rate in 2004/5 but the increase to 2008/09 was lower than average. In contrast an area along the southeast coast had a lower than average SAR 2004/5 yet the increase to 2008/09 was relatively large.
An accompanying interactive map is also available, which illustrates variations in the pattern of emergency admissions by PCT area in 2004/5.
This analysis was published in July 2010 in the Nuffield Trust report: Trends in emergency admissions in England 2004-2009: is greater efficiency breeding inefficiency? The report examined in detail the rise in emergency admissions in England from 2004/05 to 2008/09. It revealed the number of emergency admissions across England had risen by approximately 11.8 per cent – or by around 1.35million extra admissions.
For further information about our work in this area, visit the Understanding trends in emergency care project page.