ID.1
Item
diagnosis histologically confirmed of metastatic breast cancer
boolean
ID.2
Item
age (from 18 to 90 years)
boolean
ID.3
Item
eastern cooperative oncology group (ecog) performance status (0 or 1-2)
boolean
ID.4
Item
hormonal-receptor status (positive or negative)
boolean
ID.5
Item
previous adjuvant chemotherapy (none, anthracycline or anthracycline plus taxane)
boolean
ID.6
Item
previous hormonal therapy (adjuvant or metastatic)disease-free interval from the first diagnosis of breast cancer (≤ or >12 months)
boolean
ID.7
Item
extent of disease (≤ or >3 sites)
boolean
ID.8
Item
location of disease (viscera or bone)
boolean
ID.9
Item
disease evaluation (measurable or non-measurable)and bevacizumab maintenance (yes or no).
boolean
ID.10
Item
patients with human epidermal growth factor receptor type 2 (her2)-positive
boolean