Table 4.
Sensitivity per prognostic subgroup for screen-detected and interval cancers combined.
| Variable | N | Detected AI | SEN AI | 95% CI | Detected R1 | SEN R1 | 95% CI | p | |
|---|---|---|---|---|---|---|---|---|---|
| Invasive Component | not present | 341 | 264 | 77.4% | 72.9–81.8% | 294 | 86.2% | 82.5–89.9% | <0.001 |
| present | 1607 | 1278 | 79.5% | 77.6–81.5% | 1276 | 79.4% | 77.4–81.4% | 0.954 | |
| missing | 63 | ||||||||
| Tumour grade | grade 1 | 401 | 329 | 82.0% | 78.3–85.6% | 332 | 82.8% | 78.9–86.5% | 0.836 |
| grade 2 | 845 | 676 | 80.0% | 77.2–82.6% | 680 | 80.5% | 77.7–83.0% | 0.805 | |
| grade 3 | 307 | 223 | 72.6% | 67.6–77.5% | 215 | 70.0% | 64.9–75.3% | 0.322 | |
| missing | 54 | ||||||||
| Whole tumour size | ≤20 mm | 911 | 742 | 81.4% | 78.9–83.9% | 745 | 81.8% | 79.2–84.2% | 0.880 |
| >20 mm | 492 | 381 | 77.4% | 73.7–81.1% | 385 | 78.3% | 74.6–81.9% | 0.752 | |
| missing | 204 | ||||||||
| Invasive tumour size | ≤20 mm | 1168 | 941 | 80.6% | 78.3–82.7% | 950 | 81.3% | 79.1–83.5% | 0.594 |
| >20 mm | 289 | 210 | 72.7% | 67.5–77.8% | 197 | 68.2% | 62.8–73.5% | 0.092 | |
| missing | 150 | ||||||||
| Lymph node status | negative | 1110 | 906 | 81.6% | 79.3–83.8% | 918 | 82.7% | 80.4–84.9% | 0.460 |
| positive | 298 | 235 | 78.9% | 74.2–83.6% | 234 | 78.5% | 73.7–83.1% | 0.999 | |
| missing | 199 |
Abbreviations: AI—artificial intelligence; R1—human reader 1; CI—confidence interval. Tumour grade, whole tumour size, invasive tumour size, and lymph node status were only assessed for cancers that had an invasive component present. p values are based on McNemar’s test.