A 30-day follow-up period is considered sufficient time for a post-operative infection to develop and is consistent with the Centers for Disease Control and Prevention’s (CDC) National Nosocomial Infection Surveillance (NNIS) system surveillance criteria.24,40 A variable reflecting surgical complexity was based on information from Appendix H.4 of the Canadian Institute for Health Information’s Case Mix Group (CMG) Directory.41 According to this document, procedures requiring at least seven days of in-hospital care were considered to have a high level of complexity.
Une période de suivi de 30 jours est considérée comme suffisante pour qu’une infection postopératoire se manifeste et est conforme aux critères de surveillance du National Nosocomial Infection Surveillance (NNIS) System des Centers for Disease Control and Prevention (CDC)19,39. Une variable reflétant la complexité chirurgicale a été fondée sur l’information provenant de l’annexe H.4 du Case Mix Group (CMG) Directory [répertoire des groupes de maladies analogues (CMG)] de l’Institut canadien d’information sur la santé40.