Research Article
A Nomogram to Predict Noninflammatory Skin Involvement of Invasive Breast Cancer
Table 1
Differences between demographic and clinical characteristics of skin involvement and no skin involvement groups.
| Variables | No skin involvement
| Skin involvement
| Total
| No. | % | No. | % | No. | % |
| Year (age) | | | | | | | <35 | 3084 | 1.7 | 47 | 2.1 | 3131 | 1.7 | 35-50 | 30631 | 18.1 | 310 | 14.1 | 30941 | 18.1 | >50 | 140514 | 80.0 | 2832 | 83.0 | 143346 | 80.1 | Race | | | | | | | White | 138310 | 79.3 | 1596 | 72.9 | 139906 | 79.3 | Black | 15990 | 9.1 | 359 | 16.4 | 16349 | 9.2 | Other | 19929 | 11.4 | 234 | 10.6 | 20163 | 11.4 | Grade | | | | | | | I | 44395 | 25.4 | 149 | 6.8 | 44544 | 25.2 | II | 72135 | 44.8 | 812 | 37.0 | 78947 | 44.7 | III | 51293 | 29.4 | 1210 | 55.2 | 52503 | 29.7 | IV | 406 | 0.2 | 18 | 0.8 | 424 | 0.2 | Stage_N | | | | | | | N0 | 125776 | 72.1 | 584 | 26.6 | 126360 | 71.6 | N1 | 36850 | 21.1 | 884 | 40.5 | 37737 | 21.3 | N2 | 7629 | 4.3 | 401 | 18.3 | 8030 | 4.5 | N3 | 3974 | 2.2 | 317 | 14.4 | 4291 | 2.4 | ER | | | | | | | Positive | 148492 | 85.2 | 1583 | 72.3 | 150075 | 85.0 | Negative | 25737 | 14.7 | 606 | 27.6 | 26343 | 14.9 | PR | | | | | | | Positive | 129851 | 74.5 | 1291 | 58.9 | 1331142 | 74.3 | Negative | 44378 | 25.4 | 898 | 41.0 | 45276 | 25.6 | Her-2 | | | | | | | Positive | 22689 | 13.0 | 525 | 23.9 | 23214 | 13.1 | Negative | 151540 | 86.9 | 1664 | 76.0 | 153204 | 86.8 | Size (cm) | | | | | | | ≤2 | 110598 | 63.4 | 218 | 10.4 | 110816 | 62.8 | 2-5 | 53596 | 30.7 | 918 | 41.9 | 54514 | 30.9 | > 5 | 10035 | 5.7 | 1043 | 47.6 | 11078 | 6.2 | Subtype | | | | | | | Luminal A | 133071 | 76.3 | 1281 | 58.5 | 134352 | 76.1 | Luminal B | 17014 | 9.7 | 334 | 15.2 | 17384 | 9.8 | HER-2 rich | 5675 | 3.2 | 191 | 8.7 | 5866 | 3.3 | Triple negative | 18469 | 10.6 | 383 | 17.4 | 18852 | 10.6 |
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ER: estrogen receptor; PR: progesterone receptor; HER2: human epidermal growth factor receptor 2; Grade: histological grade.
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