| |
SCC
|
χ2
|
p
|
|---|
|
SCC (n = 94)
|
Non-SCC (n = 63)
|
|---|
|
Laterality
|
|
Unilateral
|
77 (81.9%)
|
54 (85.7%)
|
1.876
|
MCp = 0.380
|
|
Midline
|
1 (1.1%)
|
2 (3.2%)
|
|
Bilateral
|
16 (17%)
|
7 (11.1%)
|
|
Involved nodal groups and levels
|
|
IA
|
27 (28.7%)
|
30 (47.6%)
|
5.824*
|
0.016*
|
|
IB
|
21 (22.3%)
|
4 (6.3%)
|
7.205*
|
0.007*
|
|
IIA
|
67 (71.3%)
|
25 (39.7%)
|
15.519*
|
< 0.001*
|
|
IIB
|
41 (43.6%)
|
22 (34.9%)
|
1.187
|
0.276
|
|
III
|
25 (26.6%)
|
32 (50.8%)
|
9.551*
|
0.002*
|
|
IVA
|
3 (3.2%)
|
12 (19%)
|
10.974*
|
0.001*
|
|
IVB
|
3 (3.2%)
|
27 (42.9%)
|
38.395*
|
< 0.001*
|
|
V
|
3 (3.2%)
|
9 (14.3%)
|
6.577*
|
FEp = 0.014*
|
|
VI
|
5 (5.3%)
|
7 (11.1%)
|
1.793
|
FEp = 0.225
|
|
Parotid
|
5 (5.3%)
|
0 (0%)
|
3.461
|
FEp = 0.083
|
|
Para pharyngeal
|
1 (1.1%)
|
3 (4.8%)
|
2.078
|
FEp = 0.303
|
|
Pre auricular
|
1 (1.1%)
|
0 (0%)
|
0.675
|
FEp = 1.000
|
|
Retropharyngeal
|
7 (7.4%)
|
5 (7.9%)
|
0.013
|
FEp = 1.000
|
|
Peri vertebral
|
1 (1.1%)
|
1(1.6%)
|
0.082
|
FEp = 1.000
|
|
Supra clavicualr
|
11 (11.7%)
|
15 (23.8%)
|
4.002*
|
0.045*
|
|
Dissection bed
|
1 (1.1%)
|
1(1.6%)
|
0.082
|
FEp = 1.000
|
|
Mediastinal
|
0 (0%)
|
2 (3.2%)
|
3.023
|
FEp = 0.159
|
|
Delphian
|
0 (0%)
|
8 (12.7%)
|
12.577*
|
FEp = 0.001*
|
|
EJV
|
9 (9.6%)
|
0 (0%)
|
6.399*
|
FEp = 0.011*
|
- χ2 chi-square test, MC Monte Carlo, FE Fisher’s exact, p p value for comparing between the two studied groups
- *Statistically significant at p ≤ 0.05
