Table 3. Cumulative survival of metaplastic carcinoma (including western and Asian subgroups) after exclusion of advanced-stage cases compared with early-stage conventional NST carcinoma.
| Interval start time in months | Number of patients entering interval | Number exposed to risk | Cumulative proportion surviving at end of interval |
|---|---|---|---|
|
MBC | |||
| 30 | 285 | 242 | 0.85 |
| 60 | 162 | 137 | 0.77 |
| 90 | 98 | 78 | 0.74 |
| 120 | 54 | 46 | 0.72 |
| 150 |
35 |
27 |
0.67 |
|
Western | |||
| 30 | 145 | 122 | 0.88 |
| 60 | 84 | 70 | 0.78 |
| 90 | 48 | 36 | 0.76 |
| 120 | 23 | 20 | 0.72 |
| 150 |
15 |
11 |
0.59 |
|
Asian | |||
| 30 | 63 | 53 | 0.96 |
| 60 | 40 | 36 | 0.85 |
| 90 | 27 | 22 | 0.85 |
| 120 | 16 | 14 | 0.85 |
| 150 |
10 |
8 |
0.85 |
|
IDC NST | |||
| 30 | 284 | 282 | 0.91 |
| 60 | 254 | 254 | 0.80 |
| 90 | 222 | 210 | 0.76 |
| 120 | 188 | 169 | 0.74 |
| 150 | 144 | 116 | 0.71 |
Abbreviations: IDC NST=invasive ductal carcinoma of no special type; MBC=metaplastic breast carcinoma.