Table 2.
Characteristics of invasive cancers detected on screen by a human reader or AI.
| Detected by R1 | Detected by AI | |||||||
|---|---|---|---|---|---|---|---|---|
| N = 1261 | % | 95% CI | N = 1213 | % | 95% CI | p * | ||
| Histological grade | 1 | 329 | 27.1% | 24.7–29.7% | 313 | 26.9% | 24.4–29.5% | 0.981 |
| 2 | 673 | 55.5% | 52.7–58.3% | 651 | 55.9% | 53.1–58.8% | ||
| 3 | 210 | 17.3% | 15.3–19.6% | 200 | 17.2% | 15.1–19.5% | ||
| Missing | 49 | 97 | ||||||
| Whole tumour size | ≤20 mm | 742 | 66.1% | 63.3–68.8% | 723 | 66.9% | 64.1–69.7% | 0.720 |
| >20 mm | 380 | 33.9% | 31.2–36.7% | 357 | 33.1% | 30.3–35.9% | ||
| Missing | 139 | 181 | ||||||
| Invasive tumour size | ≤20 mm | 941 | 83.1% | 80.8–85.1% | 907 | 83.1% | 80.8–85.2% | 0.995 |
| >20 mm | 192 | 16.9% | 14.9–19.2% | 184 | 16.9% | 14.8–19.2% | ||
| Missing | 128 | 170 | ||||||
| Lymph node status | Negative | 912 | 79.9% | 77.4–82.1% | 878 | 80.0% | 77.6–82.3% | 0.959 |
| Positive | 230 | 20.1% | 17.9–22.6% | 219 | 20.0% | 17.7–22.4% | ||
| Missing | 119 | 164 | ||||||
Abbreviations: R1—Human reader 1; AI—artificial intelligence; CI—confidence interval. * p-values are based on a chi-square test.