The dataset source, Public Health England, is an executive agency of the Department of Health & Social Care, part of England Government.
Liver disease is one of the top causes of death in England and people are dying from it at younger ages. Most liver disease is preventable and much is influenced by alcohol consumption and obesity prevalence, which are both amenable to public health interventions. The statistics in this dataset are useful for the development of health policies and public health interventions, prevention of liver disease being just as important as treatment and will provide an impetus for local authorities to prioritize action on the drivers of liver disease.
The deaths on which are based the estimated rates include the cases caused by the liver diseases recorded with ICD-10 codes B15-B19, C22, I81, I85, K70-K77 and T86.4. Counts of deaths for years up to and including 2013 have been adjusted where needed to take account of the IRIS ICD-10 coding change introduced in 2014. Counts of deaths for years up to and including 2010 have been double adjusted by applying comparability ratios from both the 2011 coding change and the IRIS coding change where needed to take account of both the IRIS coding change and the ICD-10 coding change introduced in 2011.
The numerator data (provided by Public Health England Annual Mortality Extracts) for each quinary age group have been divided by the denominator population data for each age group (based on the 2011 Census population from the Office for National Statistics) respectively to give age-specific death rates for the area. These age-specific rates have been multiplied by the standard population for each age group respectively and aggregated across all the age groups to give the age-adjusted count of deaths for the area. This age-adjusted count of deaths is divided by the total standard population for the whole age range included in the indicator, and multiplied by 100,000 to give the age standardized mortality rate for the area. The standard population used to calculate age-specific standardized mortality is the 2013 European standard population. Where the observed total number of deaths is less than 10, the rates have been suppressed as there are too few deaths to calculate directly standardized rates reliably.