Table 1. Characteristics of participants in the SBCSS, NBHS, and SCCS cohorts.
| Study | Characteristics | Number | 5-yr DFS/OS for NBHS and SCCS | P-value |
|---|---|---|---|---|
| SBCSS | No. of cases | 463 | 79.3% | |
| Age at diagnosis, median (range) | 51.6 (26.1-74.3) | |||
| TNM stage | <0.001 | |||
| I | 143 | 88.4% | ||
| IIA | 165 | 84.2% | ||
| IIB | 93 | 70.0% | ||
| III | 46 | 51.9% | ||
| Unknown | 16 | 80.4% | ||
| Grade | 0.34 | |||
| 1 | 54 | 87.7% | ||
| 2 | 148 | 79.3% | ||
| 3 | 259 | 77.8% | ||
| Unknown | 2 | 50.0% | ||
| Basal-like | 0.03 | |||
| Yes | 217 | 75.4% | ||
| No | 246 | 82.8% | ||
| NBHS | No. of cases | 86 | 89.2% | |
| Age at diagnosis, median (range) | 52.0 (28.0-75.0) | |||
| TNM stage | 0.31 | |||
| I | 38 | 97.3% | ||
| IIA | 6 | 80.0% | ||
| IIB | 22 | 81.8% | ||
| III | 5 | 100.0% | ||
| Unknown | 15 | 78.6% | ||
| Grade | 0.65 | |||
| 1-2 | 12 | 91.7% | ||
| 3 | 68 | 89.3% | ||
| Unknown | 6 | 83.3% | ||
| Basal-like | 0.12 | |||
| Yes | 72 | 87.0% | ||
| No | 14 | 100.0% | ||
| No. of deaths | 11 | |||
| SCCS | No. of cases | 47 | 82.5% | |
| Age at diagnosis, median (range) | 56.0 (44.0-74.0) | |||
| TNM stage | <.0001 | |||
| I | 19 | 94.7% | ||
| IIA | 6 | 100.0% | ||
| IIB | 12 | 83.3% | ||
| III | 5 | 40.0% | ||
| Unknown | 5 | 60.0% | ||
| Grade | 0.41 | |||
| 1-2 | 8 | 87.5% | ||
| 3 | 29 | 78.4% | ||
| Unknown | 10 | 90.0% | ||
| Basal-like | 0.80 | |||
| Yes | 42 | 80.4% | ||
| No | 5 | 100.0% |