Table 1.
Characteristics of included studies
| Author year | Design | Study period | Volume | Age (mean ± SD) | LND | Reconstruction | ||
|---|---|---|---|---|---|---|---|---|
| RDG | LDG | RDG | LDG | |||||
| Hong et al. 2016 | PSM | 2008–2015 | 232 | 232 | 53.7 ± 11.5 | 55.0 ± 13.0 | D1, D1 + , D2 | BI, BII, RY |
| Li et al. 2018 | PSM | 2013–2017 | 66 | 66 | 55.2 ± 11.6 | 54.1 ± 11.4 | D2 | BI, BII |
| Li et al. 2020 | PSM | 2010–2019 | 516 | 516 | 54.63 ± 11.85 | 55.10 ± 10.24 | D1, D2 | BI, BII |
| Roh et al. 2020 | PSM | 2015–2017 | 51 | 51 | 58.1 ± 10.8 | 58.0 ± 11.1 | D1 + | BI, BII |
| Song et al. 2020 | PSM | 2016–2019 | 40 | 40 | 56.4 ± 12.8 | 58.1 ± 11.6 | D2 | BI, BII, RY |
| Ye et al. 2020 | PSM | 2014–2019 | 285 | 285 | 57.1 ± 8.3 | 57.0 ± 8.6 | D2 | BI, BII, RY |
| Isobe et al. 2021 | PSM | 2018–2020 | 50 | 50 | 69.2 ± 1.4 | 69.3 ± 1.4 | D1, D1 + , D2 | BI, BII, RY |
| Lu et al. 2021 | RCT | 2017–2020 | 141 | 142 | 59.4 ± 10.2 | 59.3 ± 11.3 | D1 + , D2 | BI, BII |
BI Billroth I, BII Billroth II, RY Roux-en-Y