Table 1:

Tumor site and initial stage (patient level)

Site/Stage% (No.)
Primary site
    Oropharynx43.2% (124)
    Larynx22.3% (64)
    Oral cavity25.4% (73)
    Hypopharynx4.2% (12)
    Skin2.1% (6)
    Unknown2.8% (8)
Primary stage
    Tx7.7% (22)
    Tis0.3% (1)
    T116.4% (47)
    T225.4% (73)
    T312.2% (35)
    T4a32.8% (94)
    T4b4.2% (12)
    T40.8% (3)
Nodal stage
    Nx4.5% (13)
    N028.9% (83)
    N111.8% (34)
    N2a3.1% (9)
    N2b33.8% (97)
    N2c16.4% (47)
    N31.4% (4)
Distant stage
    M097.9% (281)
    M12.1% (6)