Table 4.
Partial area under ROC estimated for the likelihood of malignancy based on the 6, 11, 21 and 101 category confidence rating scales for the three reading modes – independent (Ind), sequential without CAD (NoCAD Seq), and sequential with CAD (With CAD). The statistical significance (p-value) in the differences between pairs of the reading modes was estimated by the paired t-test as shown in the last three columns.
| Scale | Ind | NoCAD-Seq | With CAD | paired t-test | ||
|---|---|---|---|---|---|---|
| A | B | C | A-C | B-C | A-B | |
| 6 | 0.193 | 0.248 | 0.388 | 0.0088 | 0.013 | 0.0843 |
| 11 | 0.203 | 0.247 | 0.371 | 0.0055 | 0.0044 | 0.0950 |
| 21 | 0.205 | 0.249 | 0.371 | 0.0036 | 0.0021 | 0.1097 |
| 101 | 0.206 | 0.255 | 0.366 | 0.0047 | 0.0012 | 0.1696 |