Table 4. Comparison on histopathology characteristics between cases diagnosed in study population and all cases S-D aged 50–69 years diagnosed in period 2004–2006 in province of Modena.
| Characteristic | Cases by population in study (n = 366) No. (%) |
All cases S-D diagnosed in period 2004–2006 by MCR (n = 905) No. (%) |
p-value |
|---|---|---|---|
| Tumor diameter (mm)* | 13 ± 2 | 12 ± 1 | 0.790 |
| Missing value (%) | 9.3 | 16.3 | |
| T stage | 0.029 | ||
| Tis | 57 (15.6) | 195 (21.5) | |
| T1 mic-a-b | 124 (33.9) | 320 (35.4) | |
| T1c | 131 (35.8) | 301 (33.3) | |
| T2 | 44 (12.0) | 65 (7.2) | |
| T3–T4 | 4 (1.1) | 10 (1.1) | |
| TX | 6 (1.6) | 14 (1.5) | |
| N stage | 0.010 | ||
| N0 | 254 (69.4) | 651 (71.9) | |
| N1 | 71 (19.4) | 125 (13.8) | |
| > N1 | 22 (6.0) | 45 (5.0) | |
| NX | 19 (5.2) | 84 (9.3) | |
| M staging | 0.730 | ||
| M0 | 362 (98.9) | 896 (99.1) | |
| M1 | 4 (1.1) | 8 (0.9) | |
| Grading | 0.750 | ||
| I | 38 (10.4) | 117 (12.9) | |
| II | 179 (48.9) | 409 (45.2) | |
| III | 134 (36.6) | 312 (34.5) | |
| Unknown | 15 (4.1) | 67 (7.4) | |
| Ki-67 (%) | 0.130 | ||
| ≤ 20 | 242 (66.1) | 568 (62.8) | |
| > 20 | 67 (18.3) | 152 (16.8) | |
| Unknown | 57 (15.6) | 185 (20.4) | |
| Hormonal status | 0.140 | ||
| ER+/PR+ | 272 (73.2) | 650 (71.8) | |
| ER+/PR– | 14 (4.1) | 53 (5.9) | |
| ER–/PR+ | 2 (0.5) | 6 (0.7) | |
| ER–/PR– | 32 (9.3) | 54 (6.0) | |
| Unknown | 46 (12.8) | 142 (15.7) |
Data are presented as number (%).
S-D=screen-detected; MCR=Modena Cancer Registry; ER=estrogen receptor; PR=progesterone receptor.
*Mean±SD.