called technologist I)showed excellenceratingstriplethoseofratesfoundin10otherru-mldepartments (3%imaging setsjudged excel-lentoutof753surveys versus 1%of93,979examinations done elsewhere). Although theworkoftechnologist 1seemed toimprove dur-ingtheyearofthedoctors’ complaints, thedif-ference could notbeproven assignificant(3%excellence intheyearofcomplaint com-pared witha2%rating for3052 cases donethrough 5preceding years: 95% confidenceinterval, -3.8%, 6.8%;pvalue, .99).Thetechnologist estimated ashaving hadacerebral ischemic attack (hereinafter referredtoastechnologist 2)hadexcellence ratingslower thanthose ofhealthy urban technolo-