Table 2 Meta-analysis results of surgical features
Measured outcome | Studies | Patients | WMD |     95%CI | P | Heterogeneity test | P > |t| | ||
|---|---|---|---|---|---|---|---|---|---|
I2 | P | ||||||||
Operation time | 9 | 687 | − 7.287 | − 21.990 | 7.415 | 0.331 | 80.8 | 0.000 | 0.796 |
Intraoperative blood loss | 8 | 653 | − 1.531 | − 25.580 | 22.517 | 0.901 | 74.6 | 0.000 | 0.683 |
PO hospital stay | 9 | 687 | − 1.307 | − 2.992 | 0.378 | 0.128 | 85.5 | 0.000 | 0.101 |
Harvested lymph nodes | 6 | 508 | 9.501 | 7.933 | 11.069 | 0.000 | 50.8 | 0.071 | 0.249 |