Table 4. Association between surgery pathology report information (pathologic T category, pathologic N category and tumor grade) and age groups during 2016-2018.
| Characteristic | Age | Total | X2 | P-Value | ||
|---|---|---|---|---|---|---|
| ≤ 50 | 50-69 | >60 | ||||
| Pathologic T stage* | ||||||
| TX | 23 (0.4) | 19 (0.4) | 0 (0.0) | 42 (0.4) | ||
| T1 | 421 (7.2) | 447 (8.6) | 80 (7.9) | 948 (7.9) | ||
| T2 | 1124 (19.6) | 1109 (21.2) | 221 (21.6) | 2454 (20.5) | 31.10 | 0.014† |
| T3 | 232 (4.0) | 167 (3.2) | 39 (3.8) | 438 (3.7) | ||
| T4 | 27 (0.5) | 29 (0.6) | 13 (1.3) | 69 (0.6) | ||
| Not report/ missing | 3917 (68.2) | 3462 (66.2) | 670 (65.5) | 8049 (67.1) | ||
| Pathologic N stage** | ||||||
| NX | 47 (0.8) | 50 (1.0) | 8 (0.8) | 105 (0.9) | ||
| N0 | 722 (12.6) | 699 (13.4) | 130 (12.7) | 1551 (12.9) | ||
| N1 | 557 (9.7) | 502 (9.6) | 94 (9.2) | 1155 (9.6) | 5.22 | 0.816† |
| N2 | 320 (5.6) | 293 (5.6) | 66 (6.5) | 680 (5.7) | ||
| N3 | 148 (2.6) | 144 (2.8) | 22 (2.2) | 314 (2.6) | ||
| Not report/ missing | 3949 (68.8) | 3543 (67.7) | 703 (68.7) | 8195 (68.3) | ||
| Tumor grade*** | ||||||
| Grade 1 | 2621 (45.6) | 2625 (50.2) | 531 (51.9) | 5777 (48.1) | ||
| Grade 2 | 1649 (28.7) | 1420 (27.1) | 280 (27.4) | 3349 (27.9) | 32.39 | 0.0001† |
| Grade 3 | 1474 (25.7) | 1188 (22.7) | 212 (20.7) | 2874 (24.0) |
†Chi-squared test. *TX (Primary tumor cannot be assessed), T1(tumor ≤ 20mm), T2 (tumor >20mm but ≤ 50mm), T3(tumor >50mm), T4(Any size tumor with skin or chest wall involvement)
** NX (Regional lymph nodes cannot be assessed), N0 (No regional lymph node metastasis), N1 (Metastasis in 1 to 3 regional lymph nodes), N2 (Metastasis in 4 to 9 regional lymph nodes), N3 (Metastasis in 10 or more regional lymph nodes or in ipsilateral supraclavicular lymph node)
***G1(low grade (score 3-5)), G2(intermediate grade (score 6-7)), G3(high grade (score 8-9))