Table 1.

Demographic, clinical, and treatment characteristics for the two patient cohorts

Testing set (N = 89)Validation set (N = 34)
Age60 (32–84)59 (43–81)
SexMale73 (82)29 (85)
Female16 (18)5 (15)
TobaccoYes57 (64)27 (79)
No32 (36)7 (21)
HPVNegative53 (60)34 (100)
Positive36 (40)0 (0)
Overall stageI3 (3)0 (0)
II12 (13)4 (12)
III34 (38)8 (24)
IV40 (46)22 (64)
T stage04 (4)0 (0)
127 (30)11 (32)
226 (30)7 (21)
315 (17)10 (29)
417 (19)6 (18)
N stage028 (31)8 (24)
18 (9)2 (6)
252 (59)20 (58)
31 (1)4 (12)
SiteOropharynx61 (69)23 (68)
Larynx21 (24)10 (29)
Hypopharynx7 (7)1 (3)
Radiation dose (Gy)66 (60–70)68 (60–72)
Radiation indicationDefinitive79 (89)33 (97)
Adjuvant10 (11)1 (3)
ChemotherapyNone53 (60)19 (56)
Cisplatinum36 (40)15 (44)

NOTE. The number of cases or mean values for the group are provided, with percent of total or range of values in parentheses.