Table VIII.
Associations between SREs and characteristics of bone metastasis.
| SREs | |||||
|---|---|---|---|---|---|
| Characteristic | Yes, n (%) | No, n (%) | Total, n | χ2 | P-value |
| Number of bone metastasis | 28.316 | <0.001 | |||
| Single | 21 (16) | 39 (50.6) | 60 | ||
| Multiple | 110 (84) | 38 (49.4) | 148 | ||
| Location of bone metastasis | 0.314 | 0.855 | |||
| Appendicular | 5 (3.8) | 2 (2.6) | 7 | ||
| Axial | 102 (77.9) | 62 (80.5) | 164 | ||
| Appendicular and axial | 24 (18.3) | 13 (16.9) | 37 | ||
| HR+/HER2-BOM treatment | 0.013 | 0.990 | |||
| Chemotherapy | 22 (25.3) | 14 (24.6) | 36 | ||
| Endocrine therapy | 20 (23) | 13 (22.8) | 33 | ||
| Sequential therapy | 45 (51.7) | 30 (52.6) | 75 | ||
SREs, skeletal-related events; BOM, bone-only metastasis; HR, hormone receptor; HER2, human epidermal growth factor receptor 2.