Table 2.
Mean follow-up times in years between two successive events (gap times) according to the type of event: locoregional, contralateral breast cancer, metastases, 2nd cancer other than breast or breast cancer death
| Event of interest | Entry-first event | 1st - 2nd event | 2nd - 3rd event | 3rd - 4th event | ANY EVENT after surgery | |||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Gap time* (SD) |
N (%) |
Gap time (SD) |
N (%) |
Gap time (SD) |
N (%) |
Gap time (SD) |
N (%) |
Gap time (SD) |
N (%) |
|
| Locoregional | 5.85 (3.60) |
134 (14.6%) |
2.57 (2.13) |
15 (4.4%) |
7.52 - |
1 (1.1%) |
- - |
0 (0%) |
5.53 (3.60) |
150 (11.1%) |
| Contralateral breast cancer |
5.60 (3.45) |
63 (6.9%) |
1.39 (1.54) |
6 (1.8%) |
- - |
0 (0%) |
- - |
0 (0%) |
5.23 (3.53) |
69 (5.1%) |
| Metastases | 5.23 (3.29) |
117 (12.7%) |
1.14 (1.68) |
64 (18.9%) |
1.10 (1.48) |
7 (7.9%) |
- - |
0 (0%) |
3.68 (3.42) |
188 (13.9%) |
| 2nd cancer other than breast | 4.71 (2.64) |
25 (2.7%) |
0.75 (0.71) |
3 (0.9%) |
1.71 (2.42) |
2 (2.3%) |
- - |
0 (0%) |
4.12 (2.80) |
30 (2.2%) |
| Death from cancer | 1.56 (.) |
1 (0.1%) |
2.14 (1.81) |
76 (22.4%) |
1.83 (1.62) |
52 (59.1%) |
1.21 (1.97) |
4 (40%) |
1.99 (1.71) |
133 (9.8%) |
| Censoring** | 10.83 (2.31) |
580 (63.1%) |
3.41 (3.08) |
251 (74.0%) |
2.38 (2.20) |
78 (88.6%) |
1.47 (1.37) |
10 (100%) |
7.99 (4.51) |
919 (67.8%) |
| TOTAL |
8.87 (3.78) |
919 (100%) |
2.89 (2.94) |
339 (100%) |
2.32 (2.22) |
88 (100%) |
1.47 (1.37) |
10 (100%) |
6.89 (4.51) |
1356 (100%) |
* Gap time = time between two events
** censoring by death from other causes or lost to follow-up or alive at study termination