Table 4.
Comparison of age strata with tumor histologic grade, immunohistochemistry and chromogenic in situ hybridization results
| Parameter | Age <50 | Age ≥ 50 | Total |
| Immunohistochemistry | |||
| Negative (0 and 1+) | 33 (41.25%) | 47 (58.75%) | 80 |
| Positive (2+ and 3+) | 41 (51.25%) | 39 (48.75%) | 80 |
| Total | 74 | 86 | 160 |
| Chromogenic in situ hybridization | |||
| No amplification | 43 (42.16%) | 59 (57.84%) | 102 |
| With amplification | 31 (53.44%) | 27 (46.55%) | 58 |
| Total | 74 | 86 | 160 |
| Histologic grade | |||
| 1 | 0 (0.00%) | 4 (100.00%) | 4 |
| 2 | 53 (47.32%) | 59 (52.68%) | 112 |
| 3 | 21 (47.73%) | 23 (52.23%) | 44 |
| Total | 74 | 86 | 160 |