Table 1.

Baseline patient characteristics according to EGFR polymorphisms

FactorTotalR521K A/A or G/A genotypeR521K G/G genotypePCA-SSR >16CA-SS ≤ R16P
Sex (n)
    Female117474
    Male4020200.5018220.32
Age
    Median (SD)60 (8)59 (7)64 (9)0.4063 (8)59 (8)0.23
Tumor site (n)
    Oral cavity114758
    Oropharynx1688412
    Hypopharynx147759
    Larynx11001
    Other3210.71120.93
Tumor stage at initial diagnosis (n)
    I85362
    II21120
    III21111
    IV a271314918
    IV b30321
    IV c43131
    Not available5410.40230.20