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Use of Censored Data to Monitor Surgical-Site Infections

Published online by Cambridge University Press:  02 January 2015

Pascal Thibon ,
J. J. Parienti ,
F. Borgey ,
A. Le Prieur ,
C. Bernet ,
B. Branger  and
X. Le Coutour
Pascal Thibon*
Affiliation:
Réseau Régional d'Hygiène de Basse-Normandie, France Service d'Hygiène Hospitalière, CHU de Caen, France
J. J. Parienti
Affiliation:
Service d'Hygiène Hospitalière, CHU de Caen, France
F. Borgey
Affiliation:
Réseau Régional d'Hygiène de Basse-Normandie, France Service d'Hygiène Hospitalière, CH d'Avranches-Granville, France
A. Le Prieur
Affiliation:
Réseau Régional d'Hygiène de Basse-Normandie, France Service d'Hygiène Hospitalière, CH de Lisieux, France
C. Bernet
Affiliation:
Réseau Régional d'Hygiène de Basse-Normandie, France Service d'Hygiène Hospitalière, CHU de Caen, France
B. Branger
Affiliation:
C-CLIN Ouest, CHU de Rennes, France
X. Le Coutour
Affiliation:
Réseau Régional d'Hygiène de Basse-Normandie, France Service d'Hygiène Hospitalière, CHU de Caen, France
*
Service d'Hygiène Hospitalière, niveau 1, CHU de Caen, 14033 Caen Cedex, France
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Abstract

Objective:

To take into account the proportion of patients lost to follow-up when calculating surgical-site infection (SSI) rates.

Design:

A multicenter SSI monitoring network in Basse-Normandie, France, using the definitions for SSI of the National Nosocomial Infections Surveillance System of the Centers for Disease Control and Prevention.

Patients:

Between January 1, 1998, and December 31, 1999, 3,705 patients were operated on in 25 units of 10 institutions.

Results:

Of the patients, 41.2% (range, 5.1% to 95.5%) were seen 30 days or more after their operation. The global SSI attack rate was 2.19% (95% confidence interval, 1.72% to 2.66%). With the use of the Kaplan–Meier method, the incidence rate was 3.11% (95% confidence interval, 3.06% to 3.16%). The difference between the attack rate and the Kaplan–Meier incidence rate for each unit varied according to the percentage of patients seen on or after day 30 postoperatively and the number of SSIs diagnosed in patients seen on or after day 30.

Conclusions:

Practice guidelines are needed for the international monitoring for postdischarge SSIs and the calculation of SSI rates. The proportion of patients seen 30 days after their operation is a major quality criterion for SSI monitoring and should be routinely given in monitoring reports, oral communications, and publications to compare results obtained by different teams.

Type
Original Articles
Information
Infection Control & Hospital Epidemiology , Volume 23 , Issue 7 , July 2002 , pp. 368 - 371
Copyright
Copyright © The Society for Healthcare Epidemiology of America 2002

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