Table 1.
Descriptive statistics of the study sample
| Categorical variables | AR-negative cases
|
AR-positive cases
|
P-value |
|---|---|---|---|
| N (%) | N (%) | ||
| Stage | 0.444CT | ||
| I | 8 (17.8) | 9 (20.0) | |
| II | 27 (60.0) | 20 (44.4) | |
| III | 10 (22.2) | 16 (35.6) | |
| Grade | 0.696CT | ||
| 1 | 2 (4.9) | 0 (0.0) | |
| 2 | 3 (7.3) | 9 (20.9) | |
| 3 | 36 (87.8) | 34 (79.1) | |
| Histological subtype | >0.999F | ||
| Ductal | 33 (73.3) | 34 (75.6) | |
| Lobular | 6 (6.7) | 3 (6.7) | |
| Other | 9 (20.0) | 8 (17.8) | |
| Tumor size | 0.087CT | ||
| T1 | 9 (20.0) | 18 (40.0) | |
| T2 | 29 (64.4) | 23 (51.1) | |
| T3 | 5 (11.1) | 2 (4.4) | |
| T4 | 2 (4.4) | 2 (4.4) | |
| Nodal status | 0.080CT | ||
| N0 | 31 (68.9) | 22 (48.9) | |
| N1 | 4 (8.9) | 7 (15.6) | |
| N2 | 4 (8.9) | 5 (11.1) | |
| N3 | 6 (13.3) | 11 (24.4) | |
| Continuous variables | Mean ± SD | Mean ± SD | P-value |
| Age at diagnosis (years) | 53.9±15.1 | 59.4±12.7 | 0.105M |
| Ki67 expression (%) | 34.9±21.2 | 38.1±27.3 | 0.698M |
| P53 expression (%) | 40.8±40.2 | 36.6±46.0 | 0.735M |
Notes:
CT
P-value derived from chi-square test for trend;
F
P-value derived from Fisher’s exact test;
M
P-value derived from Mann–Whitney–Wilcoxon test for independent samples.
Abbreviation: SD, standard deviation.