| Variable name N = 286 | HER2/neu overexpression (CHUK) n = 143 | HER2/neu overexpression (CHUB) n’ = 143 | P-value | |||||
| Positive | Equivocal negative | Negative | Positive | Equivocal Negative | Negative | |||
| Age (years) | ≤50 | 5 | 0 | 42 | 5 | 1 | 37 | 0.359 |
| >50 | 5 | 7 | 84 | 14 | 0 | 86 | ||
| Gender | Male | 2 | 5 | 63 | 9 | 1 | 59 | 0.225 |
| Female | 8 | 2 | 63 | 10 | 0 | 64 | ||
| Type of specimen | Biopsy | 9 | 6 | 113 | 17 | 1 | 109 | 0.928 |
| Resection | 1 | 1 | 13 | 2 | 0 | 14 | ||
| Type of adeno-carcinoma | Intestinal | 5 | 5 | 65 | 13 | 0 | 64 | 0.08 |
| Diffuse Mixed | 4 1 | 2 0 | 52 9 | 3 3 | 2 0 | 53 6 | ||
| Stage | Early | 0 | 0 | 0 | 1 | 0 | 3 | 0.565 |
| Locally advanced | 1 | 1 | 13 | 1 | 0 | 10 | ||
| Not applicable | 9 | 6 | 113 | 17 | 1 | 110 | ||