Table 3. Table3. Histological characteristics of tumors based on age group.
|
Variable |
Category |
Total n = 266 |
Group A≤ 50 years n = 67 |
Group B>50 years n = 199 |
p-value |
|
Tumor differentiation, n(%) |
Well |
61 (23.0) |
14 (20.9) |
47 (27.3) |
0.466 (1) |
|
Moderately |
157 (59.0) |
39 (58.2) |
118 (59.3) |
0.413 (1) |
|
|
Poor/ Undifferentiated |
16 (6.0) |
9 (13.4) |
7 (3.5) |
0.005 (2) |
|
|
Unknown |
32 (12.0) |
||||
|
Mucin production, n(%) |
37 (13.9) |
19 (28.4) |
18 (9.0) |
<0.001 (1) |
|
|
Vascular invasion, n(%) |
41 (15.4) |
12 (17.9) |
29 (14.6) |
0.642 (1) |
|
|
Perineural invasion, n(%) |
39 (14.6) |
13 (19.4) |
26 (13.1) |
0.280 (1) |
|
|
TNM stage, n(%) |
I |
5 (1.9) |
2 (3.0) |
5 (2.5) |
0.893 (2) |
|
II |
81 (30.5) |
7 (10.4) |
74 (37.2) |
<0.001 (2) |
|
|
III |
108 (40.6) |
38 (56.7) |
70 (35.2) |
0.005 (1) |
|
|
IV |
43 (16.2) |
16 (23.9) |
27 (13.5) |
0.075 (1) |
|
|
III+ IV (advanced) |
151 (56.8) |
54 (80.6) |
97 (48.7) |
<0.001 (1) |
|
|
Unknown |
27 (10.8) |
TNM: Tumor, Nodes, Metastases
(1)Chi-squared test
(2)Exact Fisher test