Accuracy of national mortality codes in identifying adjudicated cardiovascular deaths

doi:10.1111/j.1753-6405.2011.00739.x

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Accuracy of national mortality codes in identifying adjudicated cardiovascular deaths

Harriss, Linton R., Ajani, Andrew E., Hunt, David, Shaw, James, Chambers, Brian, Dewey, Helen, Frayne, Judith, Beauchamp, Alison, Duve, Karen, Giles, Graham G., Harrap, Stephen, Magliano, Dianna J., Liew, Danny, McNeil, John, Peeters, Anna, Stebbing, Margaret, Wolfe, Rory and Tonkin, Andrew 2011, Accuracy of national mortality codes in identifying adjudicated cardiovascular deaths, Australian and New Zealand journal of public health, vol. 35, no. 5, pp. 466-476, doi: 10.1111/j.1753-6405.2011.00739.x.

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Title	Accuracy of national mortality codes in identifying adjudicated cardiovascular deaths
Author(s)	Harriss, Linton R. Ajani, Andrew E. Hunt, David Shaw, James Chambers, Brian Dewey, Helen Frayne, Judith Beauchamp, Alison Duve, Karen Giles, Graham G. Harrap, Stephen Magliano, Dianna J. Liew, Danny McNeil, John Peeters, Anna Stebbing, Margaret Wolfe, Rory Tonkin, Andrew
Journal name	Australian and New Zealand journal of public health
Volume number	35
Issue number	5
Start page	466
End page	476
Total pages	11
Publisher	Wiley - Blackwell Publishing Asia
Place of publication	Richmond, Vic.
Publication date	2011-10
ISSN	1326-0200 1753-6405
Keyword(s)	cardiovascular disease coronary heart disease stroke validity medical record
Summary	Objective: This study investigated the sensitivity and specificity of the national mortality codes in identifying cardiovascular disease (CVD) deaths and documents methods of verification. Methods: A 12-year retrospective case ascertainment of all ICD-coded CVD deaths was performed for deaths between 1990 and 2002 in the Melbourne Collaborative Cohort Study, comprising 41,528 subjects. Categories of non-CVD codes were also examined. Stratified samples of 750 deaths were adjudicated from a total of 2,230 deaths. Expert panels of cardiologists and neurologists adjudicated deaths. Results: Of the 750 deaths adjudicated, 582 were verified as CVD [392 coronary heart disease (CHD) and 92 stroke] and 168 non-CVD. Estimated sensitivity and specificity of national mortality codes for identifying specific causes of death were: CHD 74.2% (95% CI: 69.8–78.5%) and 97.6% (96.0–99.2%), respectively; myocardial infarction 59.9% (50.9–69.0%) and 94.2% (92.4–96.0%), respectively; haemorrhagic stroke 58.9% (46.0–71.7%) and 99.8% (99.4–100.0%), respectively and; ischaemic stroke 38.7% (20.5–56.9%) and 99.9% (99.6–100.0%), respectively. Misclassification was most common for deaths with primary ICD codes for endocrine-metabolic and genito-urinary diseases. Conclusions: National mortality coding under-estimated the true proportion of CHD and stroke deaths in the cohort by 13.6% and 50.8%, respectively.
Language	eng
DOI	10.1111/j.1753-6405.2011.00739.x
Field of Research	119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective	970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category	C1.1 Refereed article in a scholarly journal
Copyright notice	©2011, Wiley-Blackwell Publishing Asia
Persistent URL	http://hdl.handle.net/10536/DRO/DU:30046464

Document type:	Journal Article
Collection:	Population Health


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