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Visualisation and optimisation of alcohol-related hospital admission ICD-10 codes in Welsh e-cohort data

Trefan, Laszlo ORCID:, Akbari, Ashley, Morgan, Jennifer Sian, Farewell, Daniel Mark ORCID:, Fone, David ORCID:, Lyons, Ronan A., Jones, Hywel Merfyn ORCID: and Moore, Simon C. ORCID: 2021. Visualisation and optimisation of alcohol-related hospital admission ICD-10 codes in Welsh e-cohort data. International Journal of Population Data Science 6 (1) , 09. 10.23889/ijpds.v6i1.1373

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Introduction The excessive consumption of alcohol is detrimental to long term health and increases the likelihood of hospital admission. However, definitions of alcohol-related hospital admission vary, giving rise to uncertainty in the effect of alcohol on alcohol-related health care utilization. Objectives To compare diagnostic codes on hospital admission and discharge and to determine the ideal combination of codes necessary for an accurate determination of alcohol-related hospital admission. Methods Routine population-linked e-cohort data were extracted from the Secure Anonymised Information Linkage (SAIL) Databank containing all alcohol-related hospital admissions (n,= 92,553) from 2006 to 2011 in Wales, United Kingdom. The distributions of the diagnostic codes recorded at admission and discharge were compared. By calculating a misclassification rate (sensitivity-like measure) the appropriate number of coding fields to examine for alcohol-codes was established. Results There was agreement between admission and discharge codes. When more than ten coding fields were used the misclassification rate was less than 1%. Conclusion With the data at present and alcohol-related codes used, codes recorded at admission and discharge can be used equivalently to identify alcohol-related admissions. The appropriate number of coding fields to examine was established: fewer than ten is likely to lead to under-reporting of alcohol-related admissions. The methods developed here can be applied to other medical conditions that can be described using a certain set of diagnostic codes, each of which can be a known sole cause of the condition and recorded in multiple positions in e-cohort data.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Dentistry
Additional Information: Open Access under CC BY 4.0 (
Publisher: Swansea University
ISSN: 2399-4908
Funders: ESRC
Date of First Compliant Deposit: 24 March 2021
Date of Acceptance: 11 January 2021
Last Modified: 06 Jan 2024 05:48

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