Table 3 Results of the meta-analysis
From: Robotic versus laparoscopic gastrectomy for gastric cancer: a systematic review and meta-analysis
Outcomes | No. of studies | Sample size | Heterogeneity | Overall effect size | 95% CI of overall effect | P value | ||
|---|---|---|---|---|---|---|---|---|
LG | RG | I2 (%) | P value | |||||
Operation time (min) | 18 | 3925 | 2481 | 94 | < 0.001 | WMD = −32.96 | −42.08 ~ −23.84 | < 0.001 |
Estimated blood loss (mL) | 17 | 4196 | 2422 | 81 | < 0.001 | WMD = 28.66 | 18.59 ~ 38.73 | < 0.001 |
Retrieved lymph nodes | 19 | 4598 | 2677 | 83 | < 0.001 | WMD = −0.96 | −2.12 ~ 0.20 | 0.100 |
Proximal margin (cm) | 7 | 1252 | 761 | 28 | 0.220 | WMD = −0.10 | −0.29 ~ 0.09 | 0.300 |
Distal margin (cm) | 6 | 1194 | 710 | 59 | 0.030 | WMD = 0.15 | −0.21 ~ 0.52 | 0.410 |
Time to first flatus (days) | 13 | 2847 | 1888 | 65 | < 0.001 | WMD = 0.16 | 0.06 ~ 0.27 | 0.003 |
Hospital stay (days) | 19 | 4598 | 2677 | 93 | < 0.001 | WMD = 0.23 | −0.53 ~ 0.98 | 0.560 |
Overall complications | 19 | 4598 | 2677 | 0 | 0.880 | OR = 1.07 | 0.91 ~ 1.25 | 0.430 |
Mortality | 5 | 1386 | 762 | 0 | 0.820 | OR = 0.67 | 0.24 ~ 1.90 | 0.450 |
Overall survival | 6 | 1498 | 890 | 0 | 0.860 | HR = 0.95 | 0.76 ~ 1.18 | 0.640 |
Recurrence-free survival | 3 | 586 | 586 | 0 | 0.910 | HR = 0.91 | 0.69 ~ 1.21 | 0.530 |
Recurrence rate | 5 | 1038 | 757 | 0 | 0.620 | OR = 0.90 | 0.67 ~ 1.21 | 0.500 |