Table 1.
Clinical characteristics of all patients
| Variables | SD group (n = 109) | ND group (n = 120) | p-value |
|---|---|---|---|
| Age (years) | 60.8 ± 15.6 | 64.4 ± 10.8 | 0.043 |
| Sex (male/female) | 74/35 (67.9/32.1) | 96/24 (80/20) | 0.036 |
| BMI (kg/m2) | 22.9 ± 3.8 | 23.0 ± 3.0 | 0.723 |
| Diabetes | 22 (20.2) | 20 (16.7) | 0.492 |
| Alcohol intake | 6 (5.5) | 5 (4.2) | 0.636 |
| Smoking | 7 (6.4) | 9 (7.5) | 0.749 |
| Steroid usage | 1 (0.9) | 0 (0) | 0.476 |
| Previous chemoradiation therapy (+) | 15 (13.9) | 41 (34.2) | < 0.001 |
| Previous chemotherapy (+) | 41 (37.6) | 68 (56.7) | 0.004 |
| Preoperative albumin (g/dL) | 4.2 ± 0.4 | 4.4 ± 0.3 | < 0.001 |
| PNI | 50.6 ± 6.1 | 51.9 ± 5.1 | 0.064 |
| Operative time (minutes) | 54.4 ± 15.6 | 56.5 ± 17.5 | 0.344 |
Data are presented as mean ± standard deviation or numbers with percentages in parentheses, unless otherwise indicated. SD, subcutaneous drainage; ND, no drainage; BMI, body mass index; PNI, prognostic nutritional index.