Table 2.
Comparison of Postoperative Conditions Between the Two Groups
| Outcome | After PSM | |||
|---|---|---|---|---|
| LA (N=186) | NOSES (N=186) | t/χ2 | P value | |
| Operative time (min) | 181.1±53.1 | 188.1±54.8 | −1.245 | 0.214 |
| Blood loss (mL) | 79.0±92.9 | 56.7±76.0 | 2.541 | 0.011 |
| Notch length (cm) | 6.4±0.8 | 1.3±0.4 | 74.552 | <0.001 |
| Harvested Lymph node (pieces) | 14.1±5.3 | 14.4±4.4 | −0.419 | 0.675 |
| Positive Lymph node (pieces) | 1.0±2.1 | 0.8±1.8 | 0.985 | 0.325 |
| Positive margin | 0 (0) | 0 (0) | NA | NA |
| Intraoperative complications | 0 (0) | 0 (0) | NA | NA |
| Grade | 2.674 | 0.263 | ||
| Well-differentiated | 17 (9.1%) | 18 (9.7%) | ||
| Moderately-differentiated | 156 (83.9%) | 146 (78.5%) | ||
| Poor-differentiated | 13 (7.0%) | 22 (11.8%) | ||
| Histology | 0.304 | 0.859 | ||
| Adenocarcinoma | 179 (96.2%) | 177 (95.2%) | ||
| Tubular adenocarcinoma | 2 (1.1%) | 3 (1.6%) | ||
| Mucinous | 5 (2.7%) | 6 (3.2%) | ||
| Usage of additional analgesics | 95 (51.1%) | 57 (30.6%) | 16.064 | <0.001 |
| VAS scores | / | <0.001* | ||
| Day 1 postoperatively | 4.30±1.31 | 3.44±1.46 | ||
| Day 3 postoperatively | 3.33±1.06 | 2.52±1.23 | ||
| Day 5 postoperatively | 2.03±0.80 | 1.56±0.75 | ||
| Time to recovery of gastrointestinal function (hour) | 62.3±27.6 | 49.4±26.5 | 4.584 | <0.001 |
| Length of postoperative hospital stays (day) | 12.9±5.9 | 11.6±6.0 | 2.089 | 0.037 |
| Postoperative complication | 26 (14.0%) | 12 (6.5%) | 5.745 | 0.017 |
| Anastomotic leakage | 2 (1.1%) | 8 (4.3%) | ||
| Intra-abdominal infection | 2 (1.1%) | 0 (0%) | ||
| Ileus | 1 (0.5%) | 0 (0%) | ||
| Pneumonia | 4 (2.2%) | 1 (0.5%) | ||
| Incision-related complications | 17 (9.1%) | 3 (1.6%) | ||
| Pulmonary embolism | 0 (0%) | 0 (0%) | ||
| Postoperative PFDI-20 scores | 6.95±1.50 | 7.01±1.37 | 0.344 | 0.731 |
| Reoperation | 2 (1.1%) | 1 (0.5%) | 0.000 | 1.000 |
| Medical expenses (RMB) | 68256±18254 | 69640±17656 | 0.743 | 0.458 |
Notes: Results in the table are presented as mean ± standard deviation or number (%); *the P-value was calculated by repeated measures statistical analysis.