Table 1. Characteristics of the study sample (N = 504).
| Variables | Mean ± SD | N (%) | |
|---|---|---|---|
| Patient characteristics | |||
| Age at operation (years) | 52.21 ± 9.59 | ||
| Education (years) | 9.43 ± 4.58 | ||
| Living with immediate family | No | 20 (3.97) | |
| Yes | 484 (96.03) | ||
| Body mass index (kg/m2) | 23.85 ± 3.61 | ||
| Number of fetuses (cases) | 2.35 ± 1.17 | ||
| Breast cancer history | No | 444 (88.09) | |
| Yes | 60 (11.91) | ||
| Other breast disease history | No | 416 (82.63) | |
| Yes | 88 (17.37) | ||
| Charlson co-morbidity index (scores) | 0.59 ± 0.99 | ||
| Tumor stage | Stage 0/I | 199 (39.45) | |
| Stage II | 184 (36.48) | ||
| Stage III/IV | 121 (24.17) | ||
| Hospital Characteristics | |||
| Surgical procedure | MRM | 293 (58.06) | |
| BCS | 141 (28.04) | ||
| TRAM | 70 (13.90) | ||
| ASA class | |||
| I | 50 (9.93) | ||
| II | 390 (77.42) | ||
| III | 64 (12.65) | ||
| Chemotherapy | No | 129 (25.56) | |
| Yes | 375 (74.44) | ||
| Radiotherapy | No | 290 (57.57) | |
| Yes | 214 (42.43) | ||
| Hormone therapy | No | 285 (56.57) | |
| Yes | 219 (43.43) | ||
| Post-operation length of stay (days) | 3.09 ± 1.49 | ||
| Post-hospitalization 30 days | No | 405 (80.40) | |
| Yes | 99 (19.60) | ||
| Complications | No | 439 (87.10) | |
| Yes | 65 (12.90) |
BCS = breast conserving surgery, MRM = modified radical mastectomy, TRAM = transverse rectus abdominis myocutaneous flap surgery (mastectomy with reconstruction), ASA = American Society of Anesthesiologists.