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Journal Article
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, P.H.S.
ICD-9 codes and surveillance for Clostridium difficile-associated disease.
Emerging Infectious Diseases 2006 October
We conducted a retrospective cohort study to compare Clostridium difficile-associated disease rates determined by C. difficile-toxin assays and International Classification of Diseases, 9th Revision (ICD-9) codes. The correlation between toxin assay results and ICD-9 codes was good (K = 0.72, p<0.01). The sensitivity of the ICD-9 codes was 78% and the specificity was 99.7%.
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