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Cumulative sum techniques for surgeons: a brief review
journal contribution
posted on 2007-07-01, 00:00 authored by C-H Yap, M E Colson, David WattersDavid WattersThere has been increasing awareness of the need for monitoring the quality of health care, particularly in the area of surgery. The Cumulative Summation (Cusum) techniques have emerged as a popular tool for performance monitoring in surgery. They allow one to judge whether a given variation in performance is probably due to chance or greater than could be expected from random variation and thus a cause for concern. The Cusum techniques are simple to carry out and can be applied to any surgical process with a binary outcome. Four parameters need to be set in advance: acceptable outcome rate, unacceptable outcome rate, Type I and Type II error rates. In this article, we review the history, statistical methods and potential applications for the Cusum techniques in the field of surgery and illustrate the two common forms of charting (cumulative failure and Cusum charting) by using unadjusted outcome data from the Geelong Hospital and St Vincent's Hospital cardiac surgery databases.
History
Journal
ANZ journal of surgeryVolume
77Issue
7Pagination
583 - 586Publisher
WileyLocation
Milton, Qld.Publisher DOI
ISSN
1445-1433eISSN
1445-2197Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2007, Royal Australasian College of SurgeonsUsage metrics
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