Table 1.
Breast cancer characteristics in Asian ethnic groups
| Characteristic | Ethnicity | P-Value | |||
|---|---|---|---|---|---|
| Chinese (N = 209)a | Filipino (N = 77) | Japanese (N = 38) | Korean (N = 22) | ||
| Age, mean ± SD | 51.4 ± 13.1 | 51.6 ± 10.3 | 47.2 ± 10.9 | 39.2 ± 10.8 | <0.0001* |
| Stage, N (%) | |||||
| I | 109 (54.5) | 34 (45.9) | 17 (44.7) | 3 (15.0) | 0.02 |
| II | 64 (32.0) | 31 (41.9) | 18 (47.4) | 14 (70.0) | |
| III | 27 (13.5) | 9 (12.2) | 3 (7.9) | 3 (15.0) | |
| Grade, N (%) | |||||
| I | 33 (17.8) | 9 (12.7) | 7 (19.4) | 0 (0.0) | 0.01 |
| II | 90 (48.6) | 24 (33.8) | 19 (52.8) | 7 (36.8) | |
| III | 62 (33.5) | 38 (53.5) | 10 (27.8) | 12 (63.2) | |
| ER, N (%) | |||||
| Positive | 170 (82.1) | 51 (68.0) | 32 (86.5) | 11 (52.4) | 0.001 |
| Negative | 37 (17.9) | 24 (32.0) | 5 (13.5) | 10 (47.6) | |
| PR, N (%) | |||||
| Positive | 139 (68.1) | 43 (57.3) | 30 (83.3) | 11 (52.4) | 0.02 |
| Negative | 65 (31.9) | 32 (42.7) | 6 (16.7) | 10 (47.6) | |
| Her2/neu, N(%) | |||||
| Positive | 47 (24.9) | 31 (45.6) | 5 (13.9) | 5 (29.4) | 0.002 |
| Negative | 142 (75.1) | 37 (54.4) | 31 (86.1) | 12 (70.6) | |
*
By ANOVA test; all other P values calculated by Chi-square test
a
Number analyzed for each category may not total 209, 77, 38, and 22 due to missing data for some patients