Data is not held on the number of cases of aortic dissection. Data is however held on the number of National Health Service hospital attendances for patients with aortic dissection. This data only includes patients that have been admitted into hospital and the same person may have been admitted into a NHS hospital on more than one occasion.
The table contains a count of finished admission episodes with a primary diagnosis of aortic dissection for England within the financial years between 2006-07 and 2015-16.
A count of finished admission episodes (FAEs)1 with a primary diagnosis2 of Aortic dissection3, for England within the financial years between 2006-07 and 2015-164.
Activity in English NHS Hospitals and English NHS commissioned activity in the independent sector
1. Finished admission episodes
A FAE is the first period of admitted patient care under one consultant within one healthcare provider. FAEs are counted against the year or month in which the admission episode finishes. Admissions do not represent the number of patients, as a person may have more than one admission within the period.
2. Primary diagnosis
The primary diagnosis is the first of up to 20 (14 from 2002-03 to 2006-07 and seven prior to 2002-03) diagnosis fields in the HES data set and provides the main reason why the patient was admitted to hospital.
ICD-10 Clinical Coding Diagnosis:
I71.0 - Aortic Dissection
4. Assessing growth through time (Admitted patient care)
HES figures are available from 1989-90 onwards. Changes to the figures over time need to be interpreted in the context of improvements in data quality and coverage (particularly in earlier years), improvements in coverage of independent sector activity (particularly from 2006-07) and changes in NHS practice. For example, apparent reductions in activity may be due to a number of procedures which may now be undertaken in outpatient settings and so no longer include in admitted patient HES data. Conversely, apparent increases in activity may be due to improved recording of diagnosis or procedure information.