Table 1.
The baseline characteristics of patients according to the operation methods
| Variable | OS (n = 63) | LS (n = 99) | P value |
|---|---|---|---|
| Sex | .499 | ||
| Female | 13 (20.6%) | 25 (25.3%) | |
| Male | 50 (79.4%) | 74 (74.7%) | |
| Age (Years) | 63.16 ± 10.28 | 57.19 ± 10.64 | <.001 |
| BMI (kg/m2) | 24.59 ± 3.39 | 24.70 ± 3.41 | .833 |
| Previous abdominal surgery | .699 | ||
| No | 50 (79.37%) | 81 (81.82%) | |
| Yes | 13 (20.64%) | 18 (18.18%) | |
| Operation time (min) | 200.06 ± 51.09 | 259.54 ± 56.88 | <.001 |
| Intraoperative blood loss (mL) | 253.23 ± 205.03 | 187.45 ± 144.18 | .018 |
| Blood transfusion | .106 | ||
| No | 47 (74.60%) | 84 (84.85%) | |
| Yes | 16 (25.40%) | 15 (15.15%) | |
| Tumor stage | .900 | ||
| I‐II | 35 (55.56%) | 54 (54.55%) | |
| III‐IV | 28 (44.44%) | 45 (45.46%) | |
| Postoperative body temp. (°C) | 37.68 ± 0.53 | 37.53 ± 0.53 | .095 |
| Postoperative WBC (×109/L) | 12.80 ± 3.27 | 12.73 ± 3.28 | .891 |
| Postoperative albumin (g/L) | 31.22 ± 3.13 | 32.38 ± 3.21 | .025 |
| Postoperative K+ (mmol/L) | 3.92 ± 0.44 | 3.65 ± 0.32 | <.001 |
| Postoperative opioid analgesic | .018 | ||
| No | 46 (73.02%) | 54 (54.55%) | |
| Yes | 17 (26.98%) | 45 (45.46%) | |
| PPOI | .025 | ||
| No | 45 (71.43%) | 85 (85.86%) | |
| Yes | 18 (28.57%) | 14 (14.14%) |
Values shown in bold are statistically significant (P < .05).
Abbreviations: BMI, body mass index; LS, laparoscopic surgery; OS, open surgery; postoperative body temp., postoperative body temperature; WBC, white blood cell.