Coding algorithms for defining Charlson and Elixhauser co-morbidities in Read-coded databases

D Metcalfe, J Masters, A Delmestri, A Judge… - BMC medical research …, 2019 - Springer
Background Comorbidity measures, such as the Charlson Comorbidity Index (CCI) and
Elixhauser Method (EM), are frequently used for risk-adjustment by healthcare researchers …

Simple Excel and ICD-10 based dataset calculator for the Charlson and Elixhauser comorbidity indices

P Prommik, K Tootsi, T Saluse, E Strauss… - BMC Medical Research …, 2022 - Springer
Abstract Background The Charlson and Elixhauser Comorbidity Indices are the most widely
used comorbidity assessment methods in medical research. Both methods are adapted for …

Adaptation and validation of the Charlson Index for Read/OXMIS coded databases

NF Khan, R Perera, S Harper, PW Rose - BMC family practice, 2010 - Springer
Abstract Background The Charlson comorbidity index is widely used in ICD-9 administrative
data, however, there is no translation for Read/OXMIS coded data despite increasing use of …

Comparing the performance of Charlson and Elixhauser comorbidity indices to predict in-hospital mortality among a Chinese population

M Cai, E Liu, R Zhang, X Lin, SE Rigdon… - Clinical …, 2020 - Taylor & Francis
Objective Earlier comorbidity measures have been developed or validated using the North
American population. This study aims to compare five Charlson or Elixhauser comorbidity …

Comorbidity scores for administrative data benefited from adaptation to local coding and diagnostic practices

A Bottle, P Aylin - Journal of clinical epidemiology, 2011 - Elsevier
OBJECTIVE: The Charlson and Elixhauser indices are the most commonly used comorbidity
indices with risk prediction models using administrative data. Our objective was to compare …

The Charlson comorbidity index in registry-based research

N Brusselaers, J Lagergren - Methods of information in …, 2017 - thieme-connect.com
Background: Comorbidities may have an important impact on survival, and comorbidity
scores are often implemented in studies assessing prognosis. The Charlson Comorbidity …

A modification of the Elixhauser comorbidity measures into a point system for hospital death using administrative data

C Van Walraven, PC Austin, A Jennings, H Quan… - Medical care, 2009 - journals.lww.com
Background: Comorbidity measures are necessary to describe patient populations and
adjust for confounding. In direct comparisons, studies have found the Elixhauser comorbidity …

The best use of the Charlson comorbidity index with electronic health care database to predict mortality

A Bannay, C Chaignot, PO Blotière, M Basson… - Medical care, 2016 - journals.lww.com
Background: The most used score to measure comorbidity is the Charlson index. Its
application to a health care administrative database including International Classification of …

A systematic review identifies valid comorbidity indices derived from administrative health data

M Yurkovich, JA Avina-Zubieta, J Thomas… - Journal of clinical …, 2015 - Elsevier
Objectives To conduct a systematic review of studies reporting on the development or
validation of comorbidity indices using administrative health data and compare their ability to …

Cross-national comparative performance of three versions of the ICD-10 Charlson index

V Sundararajan, H Quan, P Halfon, K Fushimi… - Medical care, 2007 - journals.lww.com
Objective: The Charlson comorbidity index has been widely used for risk adjustment in
outcome studies using administrative health data. Recently, 3 International Statistical …