Table 3.
Cause of death in breast cancer patients with or without second primary cancer according to follow‐up time from breast cancer diagnosis
| Breast cancer | Cause of death | <1 y (N, % in column) | 1‐4 y (N, % in column) | 5‐10 y (N, % in column) | >10 y (N, % in column) | All (N, % in column) | |
|---|---|---|---|---|---|---|---|
| With SPC | Breast cancer | a | 11 (7.7) | 86 (10.1) | 138 (9.2) | 211 (9.1) | 466 (9.6) |
| b | 61 (42.6) | 344 (40.4) | 533 (35.4) | 540 (23.2) | 1478 (30.6) | ||
| SPC | 40 (30.0) | 258 (30.3) | 543 (36.0) | 815 (35.0) | 1656 (34.3) | ||
| Higher order primary cancer | 3 (2.1) | 26 (3.0) | 56 (3.7) | 177 (7.6) | 262 (5.4) | ||
| Other cancers | 11 (7.7) | 54 (6.3) | 100 (6.6) | 252 (10.8) | 417 (8.6) | ||
| Other causes | 17 (11.9) | 83 (9.8) | 136 (9.0) | 333 (14.3) | 569 (11.8) | ||
| All (N, % in row) | 143 (3.0) | 851 (17.6) | 1506 (31.2) | 2328 (48.2) | 4828 (100.0) | ||
| Without SPC | Breast cancer | 817 (77.0) | 4032 (86.2) | 4006 (81.1) | 2190 (62.7) | 11045 (77.9) | |
| Other cancers | 48 (4.5) | 104 (2.2) | 152 (3.1) | 184 (5.3) | 488 (3.4) | ||
| Other causes | 196 (18.5) | 541 (11.6) | 779 (15.8) | 1121 (32.1) | 2637 (18.6) | ||
| All (N, % in row) | 1061 (7.5) | 4677 (33.0) | 4937 (34.8) | 3495 (24.7) | 14170 (100.0) | ||
SPC, second primary cancer.
Higher order primary cancer, 3rd, 4th or 5th primary cancer.
a, Breast cancer patients diagnosed with non‐breast second primary cancer and dying of breast cancer; b, Breast cancer patients diagnosed with second breast cancer and dying of breast.