Table 2.
Tumor Characteristics and Association with Per1 Expression Levels (N = 33).
| Characteristic | Low Per1 Levels (≤ 1.60) | High Per1 Levels (> 1.60) | P* (Fisher's Exact Test) |
| Number of patients [n (%)] | 20 (60.6) | 13 (39.4) | |
| Age (years) {mean (SD) [minimum, maximum]} | 55.2 (11.5) [35.1, 75.1] | 55.2 (11.7) [37.5, 69.7] | |
| Menopausal status [n (%)] | |||
| Premenopausal | 6 (30.0) | 4 (30.8) | 1.00 |
| Perimenopausal | 2 (10.0) | 1 (7.7) | |
| Postmenopausal | 11 (55.0) | 8 (61.5) | |
| Missing | 1 (5.0) | 0 (0.0) | |
| Maximum size of tumor (cm) [n (%)] | |||
| 0.5 to < 1.0 | 0 (0.0) | 0 (0.0) | .06 |
| 1.0 to < 2.0 | 2 (10.0) | 4 (30.8) | |
| 2.0 to < 5.0 | 17 (85.0) | 7 (53.8) | |
| ≥ 5.0 | 0 (0.0) | 2 (15.4) | |
| Missing | 1 (5.0) | 0 (0.0) | |
| ER status | |||
| Positive | 9 (45.0) | 9 (69.2) | .04 |
| Negative | 10 (50.0) | 2 (15.4) | |
| Equivocal | 0 (0.0) | 2 (15.4) | |
| Unknown/not determined | 0 (0.0) | 0 (0.0) | |
| Missing | 1 (5.0) | 0 (0.0) | |
| Progesterone receptor status | |||
| Positive | 5 (25.0) | 5 (38.5) | .86 |
| Negative | 12 (60.0) | 7 (53.8) | |
| Equivocal | 2 (10.0) | 1 (7.7) | |
| Unknown/not determined | 0 (0.0) | 0 (0.0) | |
| Missing | 1 (5.0) | 0 (0.0) | |
| Histologic grade | |||
| 1 | 1 (5.0) | 1 (7.7) | .90 |
| 2 | 6 (30.0) | 5 (38.5) | |
| 3 | 9 (45.0) | 4 (30.8) | |
| Subtype | 1 (5.0) | 0 (0.0) | |
| Unknown/not determined | 2 (10.0) | 3 (23.0) | |
| Missing | 1 (5.0) | 0 (0.0) | |
| Lymphatic invasion | |||
| Yes | 5 (25.0) | 5 (38.5) | .70 |
| No | 14 (70.0) | 8 (61.5) | |
| Missing | 1 (5.0) | 0 (0.0) |
*
Without tumors in the missing category.