alexa External validation of two tools for the clinical diagnosis of acute diverticulitis without imaging.
Medicine

Medicine

Emergency Medicine: Open Access

Author(s): Kiewiet JJ, Andeweg CS, Laurell H, Daniels L, Lamris W,

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Abstract AIM: External validation and comparison of the diagnostic accuracy of two predictive tools, the emergency department triad and the clinical scoring tool in diagnosing acute diverticulitis. METHODS: Two derivation datasets were used crosswise for external validation. In addition, both tools were validated in a third independent cohort. Predictive values were reassessed and the Area Under the Curve expressed discriminatory capacity. Performance was compared by calculating positive predictive values of the emergency department triad in the validation cohorts and with a cut-off analysis for the clinical scoring tool at a positive predictive value of 90\%. RESULTS: Predictive value of the emergency department triad was comparable to the clinical scoring tool. The positive predictive value of the emergency department triad (97\%) decreased in the clinical scoring tool cohort (81\%) and was excellent in the independent cohort (100\%), identifying 24\%, 20\% and 14\% of the patients. A smaller proportion of patients with diverticulitis could be identified with the clinical scoring tool (6\%, 19\% and 9\%). CONCLUSION: The emergency department triad as well as the clinical scoring tool have significant predictive value in external cohorts of patients suspected of diverticulitis. These tools can be used to select patients in whom additional imaging to diagnose acute diverticulitis may be omitted. Copyright © 2013 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved. This article was published in Dig Liver Dis and referenced in Emergency Medicine: Open Access

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