TABLE 1.

Patient and tumor characteristics

Number of patients	1141
Age, median (interquartile range)	68.1 (60.1, 74.7)
Gender, no. (%)
Male	862 (75.6)
Female	279 (24.5)
Year of surgery, no. (%)
1995–1999	412 (36%)
1999–2004	633 (55%)
2005	96 (8%)
Extent of disease, no. (%)
Localized (≤pT2, N0)	597 (52%)
Regional (>pT2, any N or any T, N+)	544 (48%)
Grade, no. (%)
Low/intermediate grade (1–2)	225 (20%)
High grade (3–4)	827 (72%)
Unknown grade	89 (8%)
Histology, no. (%)
TCC or SCC/TCC	1003 (88%)
SCC	32 (3%)
Neither TCC nor SCC	33 (3%)
pT0	73 (6%)

SCC, squamous cell carcinoma.k