Skip to main content
Data set, Part of

1.5.i Excess under 75 mortality rate in adults with serious mental illness (formerly indicator 1.5) - archive version

Date Range:
01 Jan 2015 to 31 Dec 2017
Publication Date:
Geographic Coverage:
Geographical Granularity:
Country, Local Authorities


This indicator was put on hold in November 2016 until the introduction of the new mental health services data set (MHSDS) meant that a new indicator methodology could be developed. The indicator was republished with a new methodology in December 2020 and consequently comparisons should not be made to data published in 2016 and prior to this.

In 2021 the methodology for this indicator was revised again, details of which can be found in the methodological change document within the resource links below. As such, comparisons between data using different methodologies should not be made.

This indicator is a measure of the extent to which adults with a serious mental illness (SMI) die younger than adults without a serious mental illness (nSMI).

To measure premature mortality in adults diagnosed with a serious mental illness (SMI).


UPDATE February 2021: Two issues affecting the contextual information for indicator 1.5.i have been identified. Neither of these issues affected the indicator values and both have been corrected in the excel and CSV files for this indicator:

Issue 1: The confidence intervals for the mental health mortality rate were originally calculated using Dobson’s method for counts where less than 389 deaths were observed. Although this is a valid method, the assured methodology for this indicator does not include this adjustment. The indicator specification has also been updated to remove reference to Dobson's method.

Issue 2: There were some minor errors in the England level mental health population due to the inclusion of some duplicates.