| White | Black | Model 1a | Model 2a,b | ||||
---|---|---|---|---|---|---|---|---|
 | Person-years | Death (No.) | Person-years | Death (No.) | HR | 95% CI | HR | 95% CI |
All women | 6246 | 131 | 4471 | 141 | 1.54 | 1.21 to 1.97 | 1.26 | 0.99 to 1.62 |
Subtypes defined by ER/PR/HER2 | Â | Â | Â | Â | Â | Â | Â | |
 TN | 1341 | 46 | 1381 | 57 | 1.21 | 0.81 to 1.83 | 1.08 | 0.71 to 1.64 |
 Luminal A | 3853 | 56 | 2235 | 47 | 1.52 | 1.01 to 2.28 | 1.23 | 0.81 to 1.86 |
 Luminal B | 643 | 16 | 481 | 14 | 1.67 | 0.67 to 4.19 | 0.98 | 0.27 to 3.58 |
 HER2-enriched | 408 | 13 | 375 | 23 | 2.27 | 0.87 to 5.93 | 1.95 | 0.71 to 5.37 |
Subtypes defined by ER/PR/HER2/p53 | Â | Â | Â | Â | Â | Â | Â | |
 TN/p53- | 825 | 24 | 664 | 30 | 1.38 | 0.76 to 2.51 | 1.32 | 0.70 to 2.47 |
 TN/p53+ | 516 | 22 | 717 | 27 | 1.04 | 0.56 to 1.93 | 1.03 | 0.55 to 1.95 |
 Luminal A/p53- | 3262 | 39 | 1814 | 33 | 1.50 | 0.92 to 2.44 | 1.22 | 0.74 to 2.04 |
 Luminal A/p53+ | 591 | 17 | 421 | 14 | 1.10 | 0.40 to 2.97 | 0.81 | 0.28 to 2.39 |
Younger women (ages 35–49 yrs) | 3066 | 83 | 2248 | 84 | 1.45 | 1.06 to 1.99 | 1.21 | 0.87 to 1.66 |
Subtypes defined by ER/PR/HER2 | Â | Â | Â | Â | Â | Â | Â | |
 TN | 861 | 33 | 785 | 39 | 1.30 | 0.80 to 2.12 | 1.11 | 0.67 to 1.84 |
 Luminal A | 1623 | 31 | 1069 | 22 | 1.16 | 0.65 to 2.05 | 1.01 | 0.56 to 1.80 |
Subtypes defined by ER/PR/HER2/p53 | Â | Â | Â | Â | Â | Â | Â | |
 TN/p53- | 513 | 17 | 372 | 19 | 1.38 | 0.67 to 2.85 | 1.39 | 0.66 to 2.95 |
 TN/p53+ | 349 | 16 | 413 | 20 | 1.14 | 0.56 to 2.35 | 1.07 | 0.51 to 2.25 |
 Luminal A/p53- | 1329 | 23 | 792 | 12 | 0.86 | 0.41 to 1.80 | 0.77 | 0.36 to 1.63 |
 Luminal A/p53+ | 294 | 8 | 277 | 10 | 1.04 | 0.23 to 4.63 | 0.80 | 0.17 to 3.72 |
Older women (ages 50–64 yrs) | 3181 | 48 | 2223 | 57 | 1.71 | 1.16 to 2.53 | 1.38 | 0.93 to 2.04 |
Subtypes defined by ER/PR/HER2 | Â | Â | Â | Â | Â | Â | Â | |
 TN | 480 | 13 | 596 | 18 | 1.00 | 0.47 to 2.10 | 1.03 | 0.48 to 2.20 |
 Luminal A | 2231 | 25 | 1167 | 25 | 2.07 | 1.16 to 3.70 | 1.51 | 0.83 to 2.74 |
Subtypes defined by ER/PR/HER2/p53 | Â | Â | Â | Â | Â | Â | Â | |
 TN/p53- | 313 | 7 | 292 | 11 | 1.56 | 0.52 to 4.67 | 1.34 | 0.41 to 4.37 |
 TN/p53+ | 167 | 6 | 304 | 7 | 0.79 | 0.23 to 2.71 | 0.87 | 0.24 to 3.14 |
 Luminal A/p53- | 1934 | 16 | 1022 | 21 | 2.53 | 1.27 to 5.04 | 1.89 | 0.93 to 3.86 |
 Luminal A/p53+ | 297 | 9 | 144 | 4 | 1.16 | 0.31 to 4.35 | 0.90 | 0.15 to 5.48 |