Table 4.
Univariate analysis for PD-L1 * positivity.
| Variable | PD-L1 Positive | PD-L1 Negative | p Value |
|---|---|---|---|
| Gender Male Female |
n (%) 50 (74.6%) 17 (26.4%) |
n (%) 43 (81.1%) 10 (18.9%) |
0.397 |
| Race/Skin color White Brown/Black |
50 (76.9%) 15 (23.1%) |
41 (78.8%) 11 (21.2%) |
0.804 |
| Clinical Stage I II III IVa IVb |
1 (1.5%) 5 (7.5%) 18 (26.9%) 34 (50.7%) 9 (13.4%) |
1 (1.9%) 2 (3.8%) 13 (25.0%) 29 (55.8%) 7 (13.5%) |
0.930 |
| EBER ** Positive Negative |
63 (61.2%) 40 (38.8%) |
4 (23.5%) 13 (76.5%) |
0.004 |
| Alcoholism Habits No Yes |
39 (61.9%) 24 (38.1%) |
27 (55.1%) 22 (44.9%) |
0.468 |
| Smoking Habits Never Active/Former smoker |
40 (63.5%) 23 (36.5%) |
21 (45.7%) 25 (54.3%) |
0.064 |
| Comorbidity Absent Present |
44 (65.7%) 23 (34.3%) |
29 (54.7%) 24 (45.3%) |
0.222 |
| Non-keratinizing SCC 1
Undifferentiated Differentiated |
45 (67.2%) 22 (32.8%) |
26 (54.2%) 22 (45.8%) |
0.157 |
* PD-L1: programmed cell death ligand-1; ** EBER: Epstein–Barr-virus-encoded small RNAs; 1 SCC: squamous cell carcinoma.