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Coding Algorithms for Defining Comorbidities in ICD-9-CM and ICD-10 Administrative Data
Objectives:Implementation of the International Statistical Classification of Disease and Related Health Problems, 10th Revision (ICD-10) coding system presents challenges for using administrative… Expand
Updating and validating the Charlson comorbidity index and score for risk adjustment in hospital discharge abstracts using data from 6 countries.
With advances in the effectiveness of treatment and disease management, the contribution of chronic comorbid diseases (comorbidities) found within the Charlson comorbidity index to mortality is… Expand
New ICD-10 version of the Charlson comorbidity index predicted in-hospital mortality.
- V. Sundararajan, T. Henderson, C. Perry, Amanda Muggivan, H. Quan, W. Ghali
- Journal of clinical epidemiology
- 1 December 2004
BACKGROUND AND OBJECTIVE The ICD-9-CM adaptation of the Charlson comorbidity score has been a valuable resource for health services researchers. With the transition into ICD-10 coding worldwide, an… Expand
A Modification of the Elixhauser Comorbidity Measures Into a Point System for Hospital Death Using Administrative Data
Background:Comorbidity measures are necessary to describe patient populations and adjust for confounding. In direct comparisons, studies have found the Elixhauser comorbidity system to be… Expand
Adapting the Charlson Comorbidity Index for use in patients with ESRD.
- B. Hemmelgarn, B. Manns, H. Quan, W. Ghali
- American journal of kidney diseases : the…
- 1 July 2003
BACKGROUND Accurate prediction of survival for patients with end-stage renal disease (ESRD) and multiple comorbid conditions is difficult. In nondialysis patients, the Charlson Comorbidity Index has… Expand
Assessing validity of ICD-9-CM and ICD-10 administrative data in recording clinical conditions in a unique dually coded database.
OBJECTIVE The goal of this study was to assess the validity of the International Classification of Disease, 10th Version (ICD-10) administrative hospital discharge data and to determine whether there… Expand
Comparison of the Elixhauser and Charlson/Deyo Methods of Comorbidity Measurement in Administrative Data
Background:Comorbidity risk adjustment methods have been used widely with administrative data, and the Charlson/Deyo method is perhaps the most commonly used in the literature. However, a new method… Expand
Diagnosed hypertension in Canada: incidence, prevalence and associated mortality
- C. Robitaille, S. Dai, +11 authors H. Quan
- Canadian Medical Association Journal
- 10 January 2012
Background: Hypertension is a leading risk factor for cardiovascular diseases. Our objectives were to examine the prevalence and incidence of diagnosed hypertension in Canada and compare mortality… Expand
Cardiovascular risk factors in ethnic populations within Canada: results from national cross-sectional surveys
- R. Liu, L. So, S. Mohan, N. Khan, Kathryn King, H. Quan
- Open medicine : a peer-reviewed, independent…
- 10 August 2010
Background Differences in the prevalence of cardiovascular disease and associated risk factors have been noted across ethnic groups both within and between countries. The Canadian population is… Expand
Validity of Procedure Codes in International Classification of Diseases, 9th revision, Clinical Modification Administrative Data
Background:Administrative hospital discharge data are widely used to assess quality of care in patients undergoing certain procedures. However, little is known about the validity of administrative… Expand