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HES-DID Data Linkage Report - Provisional Summary Statistics, April - May 2016 (Experimental Statistics)

This is part of

Official statistics
Publication Date:
Geographic Coverage:
Geographical Granularity:
Date Range:
01 Apr 2016 to 31 May 2016


Following the NHS Digital 'Consultation on Statistics 2016-17 to 2018-19', we are stopping production of this monthly HES-DID Linkage publication series. This is the last release but linkage data will continue to be made available to extract customers. In addition, key figures about each month's linkage, which are currently made available in this publication, will instead be made available on the NHS Digital website each month.

This is the latest statistical publication of linked HES (Hospital Episode Statistics) and DID (Diagnostic Imaging Dataset) data held by the Health and Social Care Information Centre. The HES-DID linkage provides the ability to undertake national (within England) analysis along acute patient pathways to understand typical imaging requirements for given procedures, and/or the outcomes after particular imaging has been undertaken, thereby enabling a much deeper understanding of outcomes of imaging and to allow assessment of variation in practice.

This publication aims to highlight to users the availability of this updated linkage and provide users of the data with some standard information to assess their analysis approach against.

The two data sets have been linked using specific patient identifiers collected in HES and DID. The linkage allows the data sets to be linked from April 2012 when the DID data was first collected; however this report focuses on patients who were present in either data set for the period April to May 2016. For DID this is provisional 2016/17 data. For HES this is provisional 2016/17data.

The linkage used for this publication was created on 07 September 2016 and released together with this publication on 06 October 2016.

Key Facts

In the period April - May 2016:

  • 6.9 million imaging procedures were recorded in the Diagnostic Imaging Dataset as having taken place. It was possible to link 5.7 million of these records to individuals in the Hospital Episode Statistics data set.
  • 1.1 million patients who were admitted to hospital at least once were identified as having at least one imaging procedure during the same period.
  • 1.3 million patients who had at least one accident and emergency attendance were identified as having at least one imaging procedure during the same period.
  • 2.5 million patients who had at least one outpatient appointment were identified as having at least one imaging procedure during the same period.


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Last edited: 11 April 2018 4:17 pm