Table 3 Hazard ratio for overall survival of subgroups

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