| Variables | Character of variables | Meaning |
| Age 1 (yes = 1 or no = 0) | Categorical variable | Age ≤ 35 |
| Age 2 (yes = 1 or no = 0) | Categorical variable | 35 < Age ≤ 45 |
| Age 3 (yes = 1 or no = 0) | Categorical variable | 45 < Age ≤ 55 |
| Age 4 (yes = 1 or no = 0) | Categorical variable | 55 < Age |
| Rg 1 (yes = 1 or no = 0) | Categorical variable | AC or AC + Taxane regimen |
| Rg 2 (yes = 1 or no = 0) | Categorical variable | AC + Taxane + Herceptin regimen |
| Rg 3 (yes = 1 or no = 0) | Categorical variable | AC + Paclitaxel + Carboplatin regimen |
| Rg 4 (yes = 1 or no = 0) | Categorical variable | TCHP (docetaxel + carboplatin + tastuzumab + pertuzumab) regimen |
| Rg 5 (yes = 1 or no = 0) | Categorical variable | Other regimen |
| Subtype 1 (yes = 1 or no = 0) | Categorical variable | HR+/HER2− |
| Subtype 2 (yes = 1 or no = 0) | Categorical variable | HR+/HER2+ |
| Subtype 3 (yes = 1 or no = 0) | Categorical variable | HR−/HER2+ |
| Subtype 4 (yes = 1 or no = 0) | Categorical variable | HR−/HER2− |
| Afna (clinical N0 = 0, axillary FNA positive = 1, axillary FNA negative = 2) | Categorical variable | Axillary FNA |
| Scnfna (SCN FNA undone & negative = 0, SCN FNA positive = 1) | Categorical variable | Supra clavicula lymph node FNA |
| Imfna (IMLN FNA undone & negative = 0, IMLN FNA positive = 1) | Categorical variable | Internal mammary lymph node FNA |
| Cea (elevation = 1, normal range or lower range = 0) | Categorical variable | Carcinoembryonic antigen; 7 ng/ml < |
| Ca15-3 (elevation = 1, normal range or lower range = 0) | Categorical variable | Carcinoma antigen 15-3; 30 U/ml < |
| Ki-67 1 (yes = 1 or no = 0) | Categorical variable | Percentage of positive cell by IHC staining, Ki-67 < 25% |
| Ki-67 2 (yes = 1 or no = 0) | Categorical variable | Ki-67 25≤ <50% |
| Ki-67 3 (yes = 1 or no = 0) | Categorical variable | Ki-67 50≤ <75% |
| Ki-67 4 (yes = 1 or no = 0) | Categorical variable | Ki-67 75≤ <100% |
| Patho 1 (yes = 1 or no = 0) | Categorical variable | Invasive ductal carcinoma |
| Patho 2 (yes = 1 or no = 0) | Categorical variable | Invasive lobular carcinoma |
| Patho 3 (yes = 1 or no = 0) | Categorical variable | Mixed type |
| BC-Fhx (yes = 1 or no = 0) | Categorical variable | Family history of breast cancer |
| Postmeno (yes = 1 or no = 0) | Categorical variable | Post menopausal |
| Premeno (yes = 1 or no = 0) | Categorical variable | Pre menopausal |
| Multiplicity (yes = 1 or no = 0) | Categorical variable | |
| Clinical T1 (yes = 1 or no = 0) | Categorical variable | Tumor size ≤ 2 cm |
| Clinical T2 (yes = 1 or no = 0) | Categorical variable | 2 cm < Tumor size ≤ 5 cm |
| Clinical T3 (yes = 1 or no = 0) | Categorical variable | 5 cm < Tumor size |
| Clinical T4 (yes = 1 or no = 0) | Categorical variable | Invasion to skin or chest wall |