Table 4 Quantitative and statistical analysis results for the comparison of BTI, MPRAGE and CE-MRV
| Â | BTI reader1/reader2 | MPRAGE reader1/reader2 | CE-MRV reader1/reader2 |
|---|---|---|---|
Diagnostic confidence score, mean ± SD. | 3.12 ± 0.39/3.65 ± 0.30 | 2.52 ± 0.27/2.16 ± 0.22 | 3.50 ± 0.46/3.69 ± 0.44 |
True positive, n | 50/53 | 37/40 | NA |
True negative, n | 243/246 | 240/241 | NA |
False positive, n | 4/1 | 7/6 | NA |
False negative, n | 7/4 | 20/17 | NA |
SE, % | 87.7/93.0 | 64.9/70.2 | NA |
SP, % | 98.4/99.6 | 97.2/97.6 | NA |
PPV, % | 92.6/98.1 | 84.1/87.0 | NA |
NPV, % | 97.2/98.4 | 92.3/93.4 | NA |
ACC, % | 96.4/98.4 | 91.1/92.4 | NA |
Diagnostic agreement with CE-MRV, (κ value/p) | (0.88/< 0.001)/(0.95/< 0.001) | (0.68/< 0.001)/(0.73/< 0.001) | NA |
Interreader agreement, (κ value/p) | (0.89/<0.001) | (0.64/<0.001) | (0.96/<0.001) |