Official Statistics

Summary Hospital-level Mortality Indicator (SHMI) - Deaths associated with hospitalisation, July 2014 - June 2015

Indicator reporting on mortality at hospital trust level across the NHS. This indicator is produced on a quarterly basis and gives an indication for each non-specialist acute trust in England whether the observed number of deaths within 30 days of discharge from hospital was higher than expected, lower than expected or as expected when compared to the national baseline.



The Summary Hospital-level Mortality Indicator (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 all deaths reported of patients who were admitted to non-specialist acute trusts in England and either die while in hospital or within 30 days of discharge. This publication of the SHMI relates to discharges in the reporting period July 2014 to June 2015.

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’.

Further background information and supporting documents are available on the SHMI support and guidance page: