Table 1 Patient characteristics.
Correlation cohort (n = 59) | Cluster cohort (n = 36) | |
|---|---|---|
Sex | ||
Male | 50 | 32 |
Female | 9 | 4 |
Age (median, range) | 59 (41–81) | 60 (41–81) |
Primary site | ||
Oropharynx | 39 | 26 |
Larynx | 7 | 2 |
Nasopharynx | 9 | 4 |
Nasal cavity | 1 | 1 |
Unknown primary | 3 | 3 |
T stage | ||
T0 | 3 | 3 |
T1 | 8 | 5 |
T2 | 20 | 12 |
T3 | 12 | 7 |
T4 | 16 | 9 |
N stage | ||
N0 | 11 | 5 |
N1 | 9 | 5 |
N2 | 38 | 26 |
N3 | 1 | 0 |
Photon | 42 | 24 |
Proton | 17 | 12 |
Radiation dose (cGy, median, range) | 6996 (6600–7000) | |
Number of fractions | 33 (33–35) | |
