Table 2. Characteristics of the groups, divided by dichotomized SUV and dichotomized RS (n = 167).
| Low SUV-Lower RS (n = 114) | Discordant group (n = 30) | High SUV-Higher RS (n = 23) | P b | P c | P d | P e | ||
|---|---|---|---|---|---|---|---|---|
| Histology | 0.024 | 0.032 | 1.000 | 0.084 | ||||
| IDC | 86 (75.4) | 29 (96.7) | 22 (95.7) | |||||
| ILC | 15 (13.2) | 0 (0) | 0 (0) | |||||
| Others | 13 (11.4) | 1 (3.3) | 1 (4.3) | |||||
| Tumor size | <0.001 | 0.001 | 1.000 | 0.001 | ||||
| ≤2cm | 101 (88.6) | 18 (60.0) | 13 (56.5) | |||||
| >2cm | 13 (11.4) | 12 (40.0) | 8 (43.5) | |||||
| Nodal status | 0.710 | 0.841 | 0.349 | 0.452 | ||||
| Negative | 99 (86.8) | 25 (83.3) | 22 (95.7) | |||||
| Micrometastasis | 4 (3.5) | 1 (3.3) | 0 (0) | |||||
| Positive | 11 (9.6) | 4 (13.3) | 1 (4.3) | |||||
| Stage | ||||||||
| IA | 87 (76.3) | 17 (56.7) | 12 (52.2) | 0.001 | 0.006 | 0.138 | 0.029 | |
| IB | 4 (3.4) | 1 (3.3) | 0 (0) | |||||
| IIA | 22 (19.3) | 8 (26.7) | 11 (47.8) | |||||
| IIB | 1 (0.9) | 4 (13.3) | 0 (0) | |||||
| Histologic grade | <0.001 | <0.001 | 0.246 | <0.001 | ||||
| I | 36 (31.6) | 1 (3.3) | 2 (8.7) | |||||
| II | 73 (64.0) | 21 (70.0) | 11 (47.8) | |||||
| III | 3 (2.6) | 8 (26.7) | 10 (43.5) | |||||
| Unknown | 2 (1.8) | 0 (0) | 0 (0) | |||||
| Estrogen receptor a | 0.859 | 0.614 | 0.488 | 0.905 | ||||
| Strong | 101 (88.6) | 28 (93.3) | 20 (87.0) | |||||
| Moderate | 10 (8.8) | 2 (6.7) | 2 (8.7) | |||||
| Weak | 3 (2.6) | 0 (0) | 1 (4.3) | |||||
| Negative | 0 (0) | 0 (0) | 0 (0) | |||||
| Progesterone receptor a | 0.002 | 0.426 | <0.001 | 0.002 | ||||
| Strong | 59 (51.8) | 18 (60.0) | 3 (13.0) | |||||
| Moderate | 28 (24.6) | 9 (30.0) | 6 (26.1) | |||||
| Weak | 12 (10.5) | 1 (3.3) | 6 (26.1) | |||||
| Negative | 15 (13.2) | 2 (6.7) | 8 (34.8) | |||||
| Ki67 | <0.001 | 0.006 | 0.087 | <0.001 | ||||
| <20% | 104 (91.2) | 22 (73.3) | 11 (47.8) | |||||
| ≥20% | 8 (7.0) | 8 (26.7) | 12 (52.2) | |||||
| Unknown | 2 (1.8) | 0 (0) | 0 (0) |
a Strong, Allred score 7–8; Moderate, Allred score 5–6; Weak, Allred score 2–4.
b Characteristics among the three groups were compared using the χ2 test.
c Characteristics were compared between two groups using the χ2 test (Low SUV-Lower RS vs. Discordant SUV-RS).
d Characteristics were compared between two groups using the χ2 test (Discordant RS vs. High SUV-Higher RS).
e Characteristics were compared between two groups using the χ2 test (Low SUV-Lower RS vs. High SUV-Higher RS).
Abbreviations: SUV, standardized uptake value; RS, recurrence score; IDC, invasive ductal carcinoma; ILC, invasive lobular carcinoma