Document Detail

ICD-10 adaptations of the Ontario acute myocardial infarction mortality prediction rules performed as well as the original versions.
MedLine Citation:
PMID:  17689814     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To derive and validate an International Classification of Diseases-10 (ICD-10) version of the Ontario Acute Myocardial Infarction (AMI) mortality prediction rules, used to adjust for case-mix differences in studies of AMI patients using administrative data. STUDY DESIGN AND SETTING: We linked the records of all Ontario patients admitted with AMI (2002-2004) with mortality data. The original ICD-9 codes were mapped to ICD-10-CA (Canada) codes using both a translation produced by coding experts and a manual search of codes; the final codes were determined by consensus. Comorbidity prevalence and mortality rates were calculated. Multivariable logistic regression models were used to predict 30-day and 1-year mortality and the C-statistic was used to evaluate the discrimination of the models. RESULTS: We identified 37,271 AMI patients. The most common comorbidities were heart failure and dysrhythmias; 30-day and 1-year mortality rates were 12.3% and 21.8%, respectively; and mortality rates were highest among patients with shock, cancer, and acute renal failure. The C-statistics were 0.77 and 0.80, compared with 0.78 and 0.79 in the ICD-9 version, for 30-day and 1-year mortality, respectively. CONCLUSION: An ICD-10 version of the AMI mortality prediction rules predicted 30-day and 1-year mortality as well as the original ICD-9 version.
Marian J Vermeulen; Jack V Tu; Michael J Schull
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Validation Studies     Date:  2007-05-08
Journal Detail:
Title:  Journal of clinical epidemiology     Volume:  60     ISSN:  0895-4356     ISO Abbreviation:  J Clin Epidemiol     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-08-10     Completed Date:  2007-10-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8801383     Medline TA:  J Clin Epidemiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  971-4     Citation Subset:  IM    
Institute for Clinical Evaluative Sciences, Department of Health Policy, Management and Evaluation, University of Toronto, Ontario, Canada.
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MeSH Terms
Aged, 80 and over
Area Under Curve
Canada / epidemiology
International Classification of Diseases
Logistic Models*
Middle Aged
Myocardial Infarction / mortality*
Risk Assessment / methods
Risk Factors

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