Table 3 Hazard ratio for overall survival of subgroups
| No. of studies | No. of patients | HR (95%CI) | p-value | I 2(%) | |
|---|---|---|---|---|---|
| Different Metastatic Positions | |||||
| Peritoneal Dissmination [26, 29, 36, 37] | 4 | 832 | 0.76 (0.63, 0.92) | 0.005 | 68 |
| Liver Metastasis [29, 36, 38] | 3 | 365 | 0.41 (0.30, 0.55) | <0.00001 | 23 |
| Lymph Node Metastasis [29, 36] | 2 | 155 | 0.36 (0.23, 0.59) | <0.00001 | 90 |
| Different Regions | |||||
| Western Countries [27, 30, 32, 35, 39] | 5 | 639 | 0.65 (0.58, 0.73) | <0.00001 | 31 |
| Asian Countries [26, 29, 31, 33, 34, 36–38] | 8 | 2304 | 0.23 (0.17, 0.31) | <0.00001 | 93 |
