Table 2.
Characteristics of study participants, N (%)
| Characteristics | Overall |
|---|---|
| (N = 2,749) | |
| Age, mean (SD) | 49.65 (8.58) |
| Body Mass Index (kg/m2) | |
| < 18.5 | 111 (4.0) |
| 18.5–23 | 1376 (50.1) |
| ≥ 23 | 1261 (45.9) |
| Missing | 1 (0.0) |
| Marital status at diagnosis | |
| Single | 208 (7.6) |
| Married | 1828 (66.5) |
| Divorced | 143 (5.2) |
| Bereavement | 66 (2.4) |
| Missing | 504 (18.3) |
| Education, ≥university | 1320 (48.0) |
| Household monthly income ($) | |
| Less than 1,000 | 205 (7.5) |
| 1,000–2,000 | 330 (12.0) |
| 2,000–4,000 | 702 (25.5) |
| 4,000–6,000 | 515 (18.7) |
| 6,000 and above | 489 (17.8) |
| Missing | 508 (18.5) |
| Job-status at diagnosis | |
| House-wife | 830 (30.2) |
| Employed | 810 (29.5) |
| Sick leaves | 170 (6.2) |
| Self-employed | 303 (11.0) |
| Retired | 96 (3.5) |
| Others | 36 (1.3) |
| Missing | 504 (18.3) |
| Private insurance status | |
| Yes | 2117 (77.0) |
| No | 127 (4.6) |
| Missing | 505 (18.4) |
| Smoking status, ever | 219 (8.0) |
| Drinking status, current drinker | 928 (33.8) |
| Physical Activities | |
| Inactive | 761 (27.7) |
| Minimally active | 767 (27.9) |
| Active | 337 (12.3) |
| Missing | 884 (32.2) |
| Comorbidity | |
| Diabetes mellitus | 100 (3.6) |
| Hypertension | 259 (9.4) |
| Hyperlipidemia | 270 (9.8) |
| Cardiovascular disease | 19 (0.7) |
| Liver disease | 39 (1.4) |
| Pulmonary disease | 22 (0.8) |
| Gastrointestinal disease | 143 (5.2) |
| Cerebrovascular disease | 9 (0.3) |
| Chronic renal disease | 9 (0.3) |
| Thyroid disease | 133 (4.8) |
| Eye disease | 38 (1.4) |
| Others | 118 (4.3) |
| Menopausal status | |
| Premenopausal | 1582 (57.5) |
| Postmenopausal | 1161 (42.2) |
| Missing | 6 (0.2) |
| Stage | |
| non-NAC | |
| 0 | 318 (11.6) |
| I | 1033 (37.6) |
| II | 607 (22.1) |
| III | 74 (2.7) |
| Unknown | 7 (0.3) |
| NAC | |
| pCR | 409 (14.9) |
| non-pCR | 301 (10.9) |
| Type of surgery | |
| Total mastectomy | 931 (33.9) |
| Reconstruction (N = 494) | 494 (18.0) |
| Lumpectomy | 1815 (66.0) |
| Others | 3 (0.1) |
| Axilla surgery | |
| SLNB | 2212 (80.5) |
| ALND | 333 (12.1) |
| No operation | 204 (7.4) |
| Treatment | |
| Chemotherapy | 1321 (48.1) |
| Radiation therapy | 2096 (76.2) |
| Hormone therapy | 2308 (84.0) |
| Tamoxifen | 1309 (47.6) |
| Aromatase Inhibitor | 848 (30.8) |
| Gosereline | 594 (21.6) |
| Targeted therapy | |
| Herceptin | 386 (14.0) |
| Pertuzumab | 315 (11.5) |
Abbreviations: SLNB: sentinel lymph node biopsy; ALND: axillary lymph node dissection; NAC: neoadjuvant chemotherapy; PCR: Pathologic complete response