Clinical Comparators

Hospital Episode Statistics Data

A website for Gastroenterologists in England providing clinically-driven analysis of routinely collected NHS data (Hospital Episode Statistics).

View the data recorded for your team and your trust and compare with local trusts and the national picture.

Click here for a guide on how to access and use the site:

Clinical Comparators: A Guide [ 1.44 Mb ]

Click on the link below from any NHS network computer to access the site:

About the Website

The information available on 'Clinical Comparators' has been produced by the Aintree Health Outcomes Partnership (AHOP) based at the University of Liverpool, in partnership with the NHS Information Centre. AHOP and the IC has been supported in this work by a specialist gastroenterology steering group made up of advisers from the British Society of Gastroenterology (BSG), patient groups, commissioners, public health and bioinformatics.

  • This pilot website contains analyses of gastroenterological care across England derived from the routine data collected by each hospital about their patients (Hospital Episode Statistics, also used for Payment by Results). For an explanation of the data flows refer to 'Hospital Activity Data – A Guide for Clinicians' published by the RCP which can be found at:
  • It describes the adult inpatient work undertaken in your hospital compared to others in England for the year 2006-2007
  • The current version of the site contains:
    • Overall measures of activity for medical emergency and elective care and for endoscopic procedures. You can view your Trust data and compare it to local SHA peers and the National picture.
    • Pilot indicators of care. These include: (a) the percentage of gastroenterological emergencies discharged under the care of a gastroenterologist at your Trust (a potential measure of care quality for specific diseases, e.g. inflammatory bowel disease); (b) Length of stay for clinically logical groups of GI diagnoses ('Benign Luminal Disease', 'Cancer', 'Hepatology and Benign Pancreaticobiliary').

Objectives are to:

  • Provide information to frontline gastroenterologists in England about the clinical activity captured for payment by results and in Hospital Episode Statistics (HES) and to stimulate feedback on the data they have received. This should drive improvements in data quality.
  • Analyse the data in a clinically-meaningful way and identify areas where data quality is good enough to be used as a basis for developing useful measures of activity and selected care outcomes. This project is specialty-driven - by physicians for physicians.
  • The overall aim of this pilot project is to improve patient care by exploring the opportunities for providing front line clinicians with information that will be useful in reviewing, undertaking, managing and organising clinical services.

Future developments:

  • The success and quality of information available on the site is dependent on the quality of feedback from specialists. Once you have logged onto the site you will have the opportunity to submit your feedback. Is the data accurate for your Trust? Are there better ways of analysing the data? Are there particular 'indicators' you would like to see in future?
  • New indicators are undergoing development, including refinements of the diagnostic groupings and further case-mix adjustment for length of stay data. Pilot analyses of endoscopy-related outcomes are in progress including '30-day mortality' following selected procedures and diagnoses. Such indicators require careful interpretation and attention to variation in coding practice, data quality and variation in case-mix. However, over time the data has potential to support service improvements and patient care.

Prof M Pearson & Dr K Bodger