Outcomes | No. of studies | Sample size | Heterogeneity (P, I 2) | Overall effect size | 95% CI of overall effect | P | |
---|---|---|---|---|---|---|---|
LG | RG | ||||||
Conversion | 4 | 16 | 6 | 0.68, 0% | RR =0.88 | 0.36Â ~Â 2.17 | 0.78 |
Operation time (min) | 19 | 4123 | 1830 | <0.001, 88% | WMD = −49.05 | -58.18 ~ −39.91 | <0.01 |
Blood loss (mL) | 18 | 4055 | 1762 | <0.001, 93% | WMD =24.38 | 12.32Â ~Â 36.43 | <0.01 |
Time to first flatus (days) | 9 | 1231 | 713 | <0.001, 74% | WMD =0.09 | -0.10Â ~Â 0.27 | 0.36 |
Time to oral intake (days) | 9 | 2055 | 1096 | 0.67, 0% | WMD =0.23 | 0.13Â ~Â 0.34 | <0.01 |
Hospital stay (days) | 19 | 4123 | 1830 | <0.001, 82% | WMD =0.35 | -0.25Â ~Â 0.95 | 0.25 |
Overall complications | 19 | 4123 | 1830 | 0.82, 0% | RR =0.96 | 0.82Â ~Â 1.13 | 0.65 |
Surgical complications | 17 | 3234 | 1552 | 0.52, 0% | RR =0.87 | 0.72Â ~Â 1.05 | 0.15 |
Medical complications | 12 | 2137 | 907 | 0.82, 0% | RR =1.34 | 0.75Â ~Â 2.40 | 0.32 |
Reoperation | 7 | 1796 | 789 | 0.35, 11% | RR =0.69 | 0.29Â ~Â 1.62 | 0.39 |
Mortality | 7 | 2131 | 838 | 0.91, 0% | RR =0.67 | 0.26Â ~Â 1.74 | 0.41 |
Retrieved lymph nodes | 17 | 3229 | 1585 | <0.001, 86% | WMD = −1.44 | -3.26 ~ 0.37 | 0.12 |
Proximal margin (cm) | 9 | 2006 | 1024 | 0.21, 26% | WMD = −0.14 | -0.36 ~ 0.07 | 0.18 |
Distal margin (cm) | 8 | 1948 | 973 | <0.001, 81% | WMD =0.09 | -0.46Â ~Â 0.65 | 0.74 |
Recurrence | 3 | 500 | 187 | 0.39, 0% | RR =1.09 | 0.57Â ~Â 2.05 | 0.80 |
Cost (USD) | 4 | 390 | 384 | <0.001, 93% | WMD = −3944.8 | -4943.5 ~ −2946.2 | <0.01 |