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Validation of intensive care unit-acquired infection surveillance in the Italian SPIN-UTI network

Masia, Maria Dolores and Barchitta, Martina and Liperi, Giuseppe and Cantù, Anna Paola and Alliata, Elisabetta and Auxilia, Francesco and Torregrossa, Maria Valeria and Mura, Ida Iolanda and Agodi, Antonella (2010) Validation of intensive care unit-acquired infection surveillance in the Italian SPIN-UTI network. Journal of Hospital Infection, Vol. 76 (2), p. 139-142. eISSN 1532-2939. Article.

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DOI: 10.1016/j.jhin.2010.05.013

Abstract

Validity is one of the most critical factors concerning surveillance of nosocomial infections (NIs). This article describes the first validation study of the Italian Nosocomial Infections Surveillance in Intensive Care Units (ICUs) project (SPIN-UTI) surveillance data. The objective was to validate infection data and thus to determine the sensitivity, specificity, and positive and negative predictive values of NI data reported on patients in the ICUs participating in the SPIN-UTI network. A validation study was performed at the end of the surveillance period. All medical records including all clinical and laboratory data were reviewed retrospectively by the trained physicians of the validation team and a positive predictive value (PPV), a negative predictive value (NPV), sensitivity and specificity were calculated. Eight ICUs (16.3%) were randomly chosen from all 49 SPIN-UTI ICUs for the validation study. In total, the validation team reviewed 832 patient charts (27.3% of the SPIN-UTI patients). The PPV was 83.5% and the NPV was 97.3%. The overall sensitivity was 82.3% and overall specificity was 97.2%. Over- and under-reporting of NIs were related to misinterpretation of the case definitions and deviations from the protocol despite previous training and instructions. The results of this study are useful to identify methodological problems within a surveillance system and have been used to plan retraining for surveillance personnel and to design and implement the second phase of the SPIN-UTI project.

Item Type:Article
ID Code:5577
Status:Published
Refereed:Yes
Uncontrolled Keywords:Nosocomial infections, surveillance, validation study
Subjects:Area 06 - Scienze mediche > MED/42 Igiene generale e applicata
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > Azienda ASL1, Sassari > Ospedale civile SS. Annunziata
001 Università di Sassari > 03 Istituti > Igiene e medicina preventiva
Publisher:Saunders / Elsevier
eISSN:1532-2939
Copyright Holders:© 2010 The Hospital Infection Society. Published by Elsevier
Additional Information:Fra gli autori figura un gruppo di ricerca: Italian Study Group of Hospital Hygiene (GISIO).
Deposited On:07 Mar 2011 18:24

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