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Table 2 Areas under proper binormal receiver operating characteristic curves constructed from responses on the BI-RADS scale

From: Dual-energy contrast-enhanced digital mammography: initial clinical results of a multireader, multicase study

Reader MX ± US MX ± US ± CEDM Increase in Az
1 0.835 ± 0.047 0.872 ± 0.041 0.037 ± 0.026
2 0.907 ± 0.042 0.916 ± 0.030 0.009 ± 0.036
3 0.843 ± 0.042 0.851 ± 0.044 0.009 ± 0.031
4 0.809 ± 0.047 0.849 ± 0.040 0.041 ± 0.026
5 0.791 ± 0.050 0.844 ± 0.040 0.053 ± 0.041
6 0.780 ± 0.049 0.891 ± 0.032 0.111 ± 0.033 (P = 0.001)
Overall 0.827 ± 0.036 0.871 ± 0.027 0.043 ± 0.019
95% CI 0.756 to 0.899 0.817 to 0.92 0.001 to 0.085 (P = 0.045)
  1. Az, area under receiver operating characteristic curve estimated by using proper binormal model; BI-RADS, Breast Imaging, Reporting and Data System; CEDM, contrast-enhanced digital mammography; CI, confidence interval, inference used MRMC methods; MX, mammography; US, ultrasonography.
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