Table 3.
Proportion of breast cancer patients with Stage IV among all breast cancer patients differentiated by HR status
| Region | Proportion of patients with metastases among all breast cancer patients (%) | Proportion of Stage IV breast cancer patients with positive HR status with metastases among all breast cancer patients (%) | Proportion of Stage IV breast cancer patients with negative HR status with metastases among all breast cancer patients (%) | P value |
|---|---|---|---|---|
| Bone | ||||
| Europe | 60.8 | 66.7 | 41.5 | < 0.001 |
| Asia | 50.5 | 54.4 | 42.3 | < 0.001 |
| Latin America | 61.3 | 66.4 | 45.0 | < 0.001 |
| Lung | ||||
| Europe | 29.8 | 26.6 | 40.0 | < 0.001 |
| Asia | 38.7 | 38.8 | 38.5 | < 0.001 |
| Latin America | 35.1 | 31.4 | 47.0 | < 0.001 |
| Skin | ||||
| Europe | 5.8 | 6.0 | 5.0 | 0.015 |
| Asia | 3.6 | 3.3 | 4.4 | 0.155 |
| Latin America | 5.6 | 5.2 | 6.9 | 0.155 |
| Liver | ||||
| Europe | 29.6 | 25.2 | 44.0 | < 0.001 |
| Asia | 32.2 | 28.9 | 39.2 | < 0.001 |
| Latin America | 30.7 | 27.0 | 42.3 | < 0.001 |
| Brain | ||||
| Europe | 3.2 | 2.5 | 5.5 | < 0.001 |
| Asia | 4.3 | 3.8 | 5.5 | 0.049 |
| Latin America | 3.8 | 2.1 | 9.2 | < 0.001 |