Notes:
1. There is a shortfall in the number of records for 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 Wirral University Teaching Hospital NHS Foundation Trust (trust code RBL). Values for these trusts are based on incomplete data and should therefore be interpreted with caution.
2. There is a high percentage of records with missing data for the Sex field for University Hospitals Dorset NHS Foundation Trust (trust code R0D). Values for this trust should therefore be interpreted with caution.
3. There is a high percentage of invalid diagnosis codes for Blackpool Teaching Hospitals NHS Foundation Trust (trust code RXL), Chesterfield Royal Hospital NHS Foundation Trust (trust code RFS), County Durham and Darlington NHS Foundation Trust (trust code RXP), Nottingham University Hospitals NHS Trust (trust code RX1), Portsmouth Hospitals University NHS Trust (trust code RHU), Royal United Hospitals Bath NHS Foundation Trust (trust code RD1), The Princess Alexandra Hospital NHS Trust (trust code RQW), The Queen Elizabeth Hospital, King’s Lynn, NHS Foundation Trust (trust code RCX), University Hospitals Birmingham NHS Foundation Trust (trust code RRK), University Hospitals Coventry and Warwickshire NHS Trust (trust code RKB), University Hospitals of Morecambe Bay NHS Foundation Trust (trust code RTX), University Hospitals of North Midlands NHS Trust (trust code RJE), University Hospitals Plymouth NHS Trust (trust code RK9), West Suffolk NHS Foundation Trust (trust code RGR) and Wirral University Teaching Hospital NHS Foundation Trust (trust code RBL). Values for these trusts should therefore be interpreted with caution.
4. 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.
5. 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.


