Table 2 Comparison of diagnostic performance for cancer bone metastasis by our and previous AI models.
EB | BN1 | BN2 | Ours | |
---|---|---|---|---|
Country | Swedish | Japan | Japan | China |
Training cohort | 795 | 904 | 1532 | 9776 |
Bone metastases | 33% | 16% | 42% | 42% |
Age | 66 ± 12 | 64 ± 12 | 64 ± 12 | 58 ± 12 |
Gender | ||||
Male | 514 | 457 | 790 | 5421 |
Female | 281 | 447 | 742 | 4355 |
Cancer types | ||||
Prostate | 431 | 267 | 451 | 1474 |
Breast | 217 | 383 | 624 | 1680 |
Lung | / | / | / | 4817 |
Others | 147 | 254 | 457 | 1805 |
Validating cohort | NM | NM | NM | 1223 |
Testing cohort | 384 | 257 | 503 | 1223 |
Performance measured by AUC | ||||
---|---|---|---|---|
AUC of cancer types | ||||
Prostate | 0.939 | 0.949 | 0.957 | 0.955 |
Breast | 0.847 | 0.91 | 0.924 | 0.988 |
Lung | – | – | – | 0.957 |
Other | 0.77 | 0.861 | 0.914 | 0.971 |
Total | 0.858 | 0.91 | 0.932 | 0.964 |
AUC of gender | ||||
Male | 0.877 | 0.912 | 0.934 | 0.963 |
Female | 0.831 | 0.91 | 0.932 | 0.966 |
AUC of age | ||||
< 60 years | – | – | – | 0.979 |
≥ 60 years | – | – | – | 0.949 |