Table 1:

Sensitivity, specificity, positive predictive value, negative predictive value, and false-negative rate for neuroradiologists, non-neuroradiologists, and the combined cohort

NRNNRCombined
Sensitivity82% (32/39)42% (13/31)64% (45/70)
Specificity100% (57/57)100% (32/32)100% (89/89)
PPV100% (32/32)100% (13/13)100% (45/45)
NPV89% (57/64)64% (32/50)78% (89/114)
FN rate18% (7/39)58% (18/31)36% (25/70)
  • Note:—FN indicates false-negative; NPV, negative predictive value; PPV, positive predictive value.