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. 2023 Sep 22;12(9):2371–2378. doi: 10.21037/tcr-23-1175

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.