Table 2 Oncological outcomes of included studies
Study | Country | Group | Tumor stage | Extent of LND | Number of retrieved lymph nodes | Length of follow-up | Prognostic outcomes |
|---|---|---|---|---|---|---|---|
EGC/AGC | D1/D1+/D2 | ||||||
Yasuda | Japan | LG | 44/1 | 45/0/0 | NR | NR | NR |
| Â | Â | OG | 24/4 | 28/0/0 | NR | NR | NR |
Mochiki | Japan | LG | 29/1 | 0/30/0 | NR | Median 40Â m | 5-year OS rate 95.7Â %, 5-year DFS rate 96Â % |
| Â | Â | OG | 14/2 | 0/16/0 | NR | NR | NR |
Meng | China | LG | 38/78 | 0/0/116 | 29 ± 11 | 2~48 m | Median survival time 23 m |
|  |  | OG | 41/98 | 0/0/139 | 27 ± 10 | Median survival time 22.5 m | |
Hu | China | LG | 24/85 | 0/0/109 | 31.4 ± 14.2 | 2~56 m | 1-year OS rate 91.0 %, 3-year OS rate 73.7 %, 5-year OS rate 54.5 % |
|  |  | OG | 25/99 | 0/0/124 | 32.6 ± 11.7 | 1-year OS rate 92.9 %, 3-year OS rate 77 %, 5-year OS rate 59.2 % | |
Li | China | LG | 3/51 | 0/0/54 | 27.8 ± 3.9 | 36 m | 1-year OS rate 85.2 %, 3-year OS rate 55.6 % |
|  |  | OG | 5/49 | 0/0/54 | 26.7 ± 4.6 | 1-year OS rate 81.5 %, 3-year OS rate 57.4 % | |
Qiu | China | LG | 0/30 | 0/0/30 | 30.2 ± 12.0 | NR | NR |
|  |  | OG | 0/34 | 0/0/34 | 28.1 ± 11.8 | NR | NR |
Suzuki | Japan | LG | 37/1 | 6/30/2 | NR | Median 42Â m | Three died from pneumonia, one was lung cancer-related,and one was while bathing |
| Â | Â | OG | 26/2 | 12/12/4 | NR | One patient died from gastric cancer and three died from cerebrovascular disease |