Table 2. General data of distant metastasis of breast cancer.
| Transfer site | MBC (N=134), n (%) | FBC (N=8,698), n (%) | χ2 | P |
|---|---|---|---|---|
| Bone | 54 (40.30) | 3,636 (41.80) | 0.123a | 0.726 |
| Brain | 9 (6.72) | 350 (4.02) | 2.453 | 0.117 |
| Liver | 13 (9.70) | 973 (11.19) | 0.293a | 0.588 |
| Lung | 18 (13.43) | 1,361 (15.65) | 0.491a | 0.483 |
| Bone and brain | 0 (0) | 121 (1.39) | 0.267c | |
| Bone and liver | 4 (2.99) | 532 (6.12) | 1.754b | 0.185 |
| Bone and lung | 24 (17.91) | 867 (9.97) | 9.178a | 0.002 |
| Brain and liver | 0 (0) | 23 (0.26) | 1.000c | |
| Brain and lung | 0 (0) | 63 (0.82) | 1.000c | |
| Liver and lung | 0 (0) | 218 (2.51) | 0.082c | |
| Bone, brain, liver | 1 (0.75) | 38 (0.44) | 0.000b | 1.000 |
| Bone, brain, lung | 4 (2.99) | 90 (1.03) | 3.095b | 0.079 |
| Bone, liver, lung | 5 (3.73) | 344 (3.95) | 0.000b | 1.000 |
| Brain, liver, lung | 0 (0) | 19 (0.22) | 1.000c | |
| Bone, brain, liver, lung | 2 (1.49) | 63 (0.72) | 0.274b | 0.601 |
a, Pearson Chi-square test; b, Chi-square test of continuity correction; c, Fisher exact probability test. MBC, male breast cancer; FBC, female breast cancer.