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. 2021 Oct 29;100(43):e27605. doi: 10.1097/MD.0000000000027605

Table 1.

Demographic and clinicopathological characteristics of patients with T1–2N0M0 breast cancer.

Variables All patients (%) Overall death (%)
N 161966 10567
Age, y
 ≤45 15545 9.6 455 4.3
 45–65 78355 48.4 2347 22.2
 65–85 61761 38.1 5529 52.3
 >85 6305 3.9 2236 21.2
Race
 White 130709 80.7 8718 82.5
 Black 15754 9.7 1298 12.3
 Other 15503 9.6 551 5.2
Year at diagnosis
 2010–2012 76560 47.3 7581 71.7
 2013–2016 85406 52.7 2986 28.3
Grade
 Well 46953 29.0 2409 22.8
 Moderately 71565 44.2 4410 41.7
 Poorly 43116 26.6 3705 35.1
 Undifferentiated 332 0.2 43 0.4
T stage
 T1 120985 74.7 6286 59.5
 T2 40981 25.3 4281 40.5
Molecular type
 HR+/HER2+ 14873 9.2 838 7.9
 HR−/HER2+ 5577 3.4 383 3.6
 HR+/HER2− 124540 76.9 7522 71.2
 HR−/HER2− 16976 10.5 1824 17.3