Table 1 Clinical and pathological characteristics of AA and CAU breast cancer in Atlanta
From: Enhanced down-regulation of ALCAM/CD166 in African-American Breast Cancer
| Characteristics | CAU (n = 95) | AA (n = 78) | p value | ||
|---|---|---|---|---|---|
| n | % | n | % | ||
| Age at diagnosis | 0.99 | ||||
| ≤ 50 years | 29 | 30.5 | 23 | 29.5 | |
| > 50 years | 66 | 69.5 | 55 | 70.5 | |
| Histological type | 0.003* | ||||
| Ductal | 74 | 77.8 | 76 | 97.4 | |
| Lobular | 7 | 7.4 | 2 | 2.6 | |
| Ductal/Lobular | 7 | 7.4 | 0 | ||
| Missing | 7 | 7.4 | |||
| Histological grade | 0.069 | ||||
| G1 | 29 | 30.5 | 16 | 20.5 | |
| G2 | 44 | 46.3 | 29 | 37.2 | |
| G3 | 17 | 17.9 | 24 | 30.8 | |
| Missing | 5 | 5.3 | 9 | 11.5 | |
| Tumor size | 0.026* | ||||
| T1 | 69 | 72.6 | 34 | 43.6 | |
| T2 | 15 | 15.8 | 20 | 25.6 | |
| T3-T4 | 6 | 6.3 | 7 | 9.0 | |
| Missing | 5 | 5.3 | 17 | 21.8 | |
| Lymph node status | 0.68 | ||||
| Negative | 48 | 50.5 | 38 | 48.7 | |
| Positive | 25 | 26.3 | 23 | 29.5 | |
| Missing | 22 | 23.2 | 17 | 21.8 | |
| AJCC stage | 0.65 | ||||
| I | 40 | 42.1 | 28 | 35.9 | |
| II | 22 | 23.2 | 18 | 23.1 | |
| III-IV | 11 | 11.5 | 12 | 15.4 | |
| Missing | 22 | 23.2 | 20 | 25.6 | |
| ER status | 0.001* | ||||
| Negative | 15 | 15.8 | 30 | 38.5 | |
| Positive | 70 | 73.7 | 45 | 57.7 | |
| Missing | 10 | 10.5 | 3 | 3.8 | |
| PR status | 0.081 | ||||
| Negative | 28 | 29.5 | 34 | 43.6 | |
| Positive | 57 | 60 | 41 | 52.6 | |
| Missing | 10 | 10.5 | 3 | 3.8 | |
| HER2-neu status | 0.13 | ||||
| Negative | 67 | 70.5 | 65 | 83.4 | |
| Positive | 19 | 20 | 9 | 11.5 | |
| Missing | 9 | 9.5 | 4 | 5.1 | |
| Triple negative | 0.0008* | ||||
| Yes | 10 | 10.5 | 25 | 32.0 | |
| No | 74 | 77.9 | 51 | 65.4 | |
| Missing | 11 | 11.6 | 2 | 2.6 | |