Eighteen NHS trusts in England have been categorised as having a ‘lower than expected’ or a ‘higher than expected’ mortality ratio over two years, according to analysis from Health and Social Care Information Centre (HSCIC).
*HSCIC must be quoted as the source of these figures
Between July 2011 and June 2013, 12 trusts were categorised as having a ‘lower than expected’ ratio, based on Summary Hospital-level Mortality Indicator (SHMI) data and six as having a ‘higher than expected’ ratio.
This analysis features in an experimental report; Summary Hospital-level Mortality Indicator (SHMI) – Deaths associated with hospitalisation, England, July 2011 – June 2013, Experimental Statistics, Supplementary Outlier Report.
The SHMI compares the actual number of patients to die following hospitalisation at a particular trust with the number that would be expected to die, based upon average England figures, given the characteristics of the patients treated there4. It considers deaths taking place during a stay at a trust and also within 30 days of discharge.
SHMI values for individual trusts are categorised ‘as expected’, ‘lower than expected’ or ‘higher than expected’.5 The SHMI requires careful interpretation and needs to be viewed alongside other evidence, rather than as a stand-alone verdict on a hospital trust’s performance.
The trusts categorised as lower or higher than expected in both the January 2013 publication covering (July 2011 – June 2012) and the January 2014 publication (covering July 2012 – June 2013) are:
- ‘Higher than expected’: 6
– Mid Cheshire Hospitals NHS Foundation Trust
– Colchester Hospital University NHS Foundation Trust
– Aintree University Hospital NHS Foundation Trust
– Wye Valley NHS Trust
– Blackpool Teaching Hospitals NHS Foundation Trust
– East Lancashire Hospitals NHS Trust
- ‘Lower than expected’7
– Barts Health NHS Trust
– Royal Free London NHS Foundation Trust
– North Middlesex University Hospital NHS Trust
– Cambridge University Hospitals NHS Foundation Trust
– Guy’s and St Thomas’ NHS Foundation Trust
– St George’s Healthcare NHS Trust
– The Whittington Hospital NHS Trust
– Chelsea and Westminster Hospital NHS Foundation Trust
– University College London Hospitals NHS Foundation Trust
– North West London Hospitals NHS Trust
– Barnet and Chase Farm Hospitals NHS Trust
– Imperial College Healthcare NHS Trust
Today’s report also provides additional, contextual, information on palliative care, method of admissions and deprivation10.
HSCIC chair Kingsley Manning said: “The SHMI, combined with other indicators provides a very useful insight, which should prompt trusts to undertake a further, more detailed examination of their services, but should not be seen as a definitive judgement.”