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  • Incorporation bias in studi...
    Worster, Andrew; Carpenter, Christopher

    Canadian journal of emergency medicine, 03/2008, Volume: 10, Issue: 2
    Journal Article

    In this issue of CJEM, Mater and colleagues evaluated the diagnostic test characteristics of plain radiographs in the form of a shunt series and CT scanning of the head to determine whether children have cerebrospinal shunt malfunction.5 These authors chose a clinical assessment as the reference standard, and specifically defined shunt malfunction as the decision of the neurosurgeon to perform a shunt revision.