Table 1 Characteristics of the patient cohort separated by radiotherapy technique
Characteristic | 3DCRT | IMRT | p-value |
|---|---|---|---|
(n = 49) | (n = 44) | ||
Age – years |  |  | 0.448 |
 Mean | 64.2 | 62.9 | |
 Median | 65 | 62 | |
 Range | 45-84 | 40-79 | |
Male Sex – no. (%) | 42 (85.7) | 36 (81.8%) | 0.610 |
KPS – % |  |  | 0.516 |
 Mean | 85.5 | 86.6 | |
 Median | 90 | 90 | |
 Range | 70-100 | 70-100 | |
T-Stage – no. (%) |  |  | 0.331 |
 T1 | 0 (0) | 0 (0) |  |
 T2 | 13 (26.5) | 8 (18.2) | |
 T3 | 26 (53.1) | 30 (68.2) | |
 T4 | 10 (20.4) | 6 (13.2) | |
N-Stage – no. (%) |  |  | 0.507 |
 N0 | 10 (20.4) | 11 (25) | |
 N1 | 28 (57.1) | 26 (59.1) | |
 N2 | 11 (22.4) | 6 (13.6) | |
 N3 | 0 (0) | 1 (2.3) | |
Grade – no. (%) |  |  | 0.367 |
 G1 | 1 (2) | 2 (4.5) | |
 G2 | 20 (40.8) | 23 (52.3) | |
 G3 | 28 (57.1) | 19 (43.2) | |
Pretreatment Hemoglobin – g/dl |  |  | 0.394 |
 Mean | 12.8 | 13.1 | |
 Median | 12.6 | 13.5 | |
 Range | 9.5-15.9 | 5.2-17.1 | |
Location (Distance from dental arcade to cranial tumor border) – cm |  |  | 0.031 |
 Mean | 26.4 | 23.7 | |
 Median | 27 | 22 | |
 Range | 15-37 | 10-38 | |
Histology – no. (%) |  |  | 0.491 |
 Squamous cell | 41 (83.7) | 39 (88.6) | |
 Adeno | 8 (16.3) | 5 (11.4) | |
Cumulative RT dose – Gy |  |  | 0.010 |
 Mean | 55.4 | 57.2 | |
 Median | 54 | 56.8 | |
 Range | 50.4-70.2 | 50–61.2 |