These indicators are designed to accompany the SHMI publication.
The SHMI methodology does not make any adjustment for deprivation. This is because adjusting for deprivation might create the impression that a higher death rate for those who are more deprived is acceptable. Patient records are assigned to 1 of 5 deprivation groups (called quintiles) using the Index of Multiple Deprivation (IMD). The deprivation quintile cannot be calculated for some records e.g. because the patient's postcode is unknown or they are not resident in England.
Contextual indicators on the percentage of provider spells and deaths reported in the SHMI belonging to each deprivation quintile are produced to support the interpretation of the SHMI.
Notes:
1. There is a shortfall in the number of records for Barking, Havering and Redbridge University Hospitals NHS Trust (trust code RF4), Buckinghamshire Healthcare NHS Trust (trust code RXQ), East Suffolk and North Essex NHS Foundation Trust (trust code RDE), Mid Cheshire Hospitals NHS Foundation Trust (trust code RBT), Sheffield Teaching Hospitals NHS Foundation Trust (trust code RHQ), and The Shrewsbury and Telford Hospital NHS Trust (trust code RXW). Values for these trusts are based on incomplete data and should therefore be interpreted with caution.
2. On 1st April 2026, Bridgewater Community Healthcare NHS Foundation Trust (trust code RY2) was acquired by Warrington and Halton Teaching Hospitals NHS Foundation Trust (trust code RWW). The new organisation is called North Cheshire and Mersey NHS Foundation Trust (trust code RWW). Bridgewater Community Healthcare NHS Foundation trust does not submit activity to HES APC so the impact on the SHMI is minimal, although mapping their data to the new trust, for completeness, will be done at a later date.
3. A number of trusts are now submitting Same Day Emergency Care (SDEC) data to the Emergency Care Data Set (ECDS) rather than the Admitted Patient Care (APC) dataset. The SHMI is calculated using APC data. Removal of SDEC activity from the APC data may impact a trust’s SHMI value and may increase it. More information about this is available in the Background Quality Report.
4. 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.