Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, England, April 2017 - March 2018National statistics, Official statistics, Open data
- Publication Date:
- 20 Sep 2018
- Geographic Coverage:
- Geographical Granularity:
- NHS Trusts
- Date Range:
- 01 Apr 2017 to 31 Mar 2018
This publication of the SHMI relates to discharges in the reporting period April 2017 to March 2018.
The SHMI is the ratio between the actual number of patients who die following hospitalisation at the trust and the number that would be expected to die on the basis of average England figures, given the characteristics of the patients treated there. It covers patients admitted to hospitals in England who died either while in hospital or within 30 days of being discharged.
To help users of the data understand the SHMI, trusts have been categorised into bandings indicating whether a trust's SHMI is 'higher than expected', 'as expected' or 'lower than expected'. For any given number of expected deaths, a range of observed deaths is considered to be 'as expected'. If the observed number of deaths falls outside of this range, the trust in question is considered to have a higher or lower SHMI than expected.
The SHMI is not a measure of quality of care. A higher than expected number of deaths should not immediately be interpreted as indicating poor performance and instead should be viewed as a 'smoke alarm' which requires further investigation. Similarly, an 'as expected' or 'lower than expected' SHMI should not immediately be interpreted as indicating satisfactory or good performance.
Further background information and supporting documents, including information on how to interpret the SHMI, are available on the SHMI homepage (see Related Links).
For the 131 trusts included in the SHMI from 1 April 2017 to 31 March 2018:
• There were approximately 9.0 million discharges, from which 299,000 deaths were recorded either while in hospital or within 30 days of discharge. This includes deaths from other causes as well as deaths related to the reason for the hospital admission.
• 13 trusts had a higher than expected number of deaths. Of these 13 trusts, 7 also had a higher than expected number of deaths for the same period in the previous year.
• 103 trusts had a number of deaths within the expected range.
• 15 trusts had a lower than expected number of deaths. Of these 15 trusts, 13 also had a lower than expected number of deaths for the same period in the previous year.
1. Heart of England NHS Foundation Trust (trust code RR1) became part of University Hospitals Birmingham NHS Foundation Trust (trust code RRK) on 1st April 2018. Burton Hospitals NHS Foundation Trust (trust code RJF) was acquired by Derby Teaching Hospitals NHS Foundation Trust (trust code RTG) on 1st July 2018. The new trust is called University Hospitals of Derby and Burton NHS Foundation Trust (trust code RTG). Ipswich Hospital NHS Trust (trust code RGQ) was acquired by Colchester Hospital University NHS Foundation Trust (trust code RDE) on 1st July 2018. The new trust is called East Suffolk and North Essex NHS Foundation Trust (trust code RDE). Results are presented to reflect the updated organisational structure from this SHMI publication onwards.
2. We are looking to bring forward the publication of the SHMI for future releases and will pre-announce the date for the next publication at the beginning of October 2018 on NHS Digital’s publication calendar.
3. Further information on data quality can be found in the SHMI background quality report, which can be downloaded from the 'Resources' section of this page.