Table 1.
Characteristics of the patients by treatment group
| Variable | Subgroups | p-RTCT | p-CAIR |
| (n = 54) | (n = 57) | ||
| Age | <57 years | 28 (52%) | 24 (42%) |
| ≥57 years | 25 (48%) | 33 (57%) | |
| Sex | M | 37 (69%) | 39 (68%) |
| F | 17 (31%) | 18 (32%) | |
| Tumor site | Oral cavity | 25 (46%) | 29 (51%) |
| Oropharynx | 29 (54%) | 28 (49%) | |
| cT stage | T1, T2 | 36 (67%) | 39 (68%) |
| T3, T4 | 18 (33%) | 18 (32%) | |
| cN stage | N0 | 17 (31%) | 19 (33%) |
| N1, N2, N3 | 37 (69%) | 38 (67%) | |
| ZUBROD | 0 | 23 (43%) | 25 (44%) |
| 1 | 31 (57%) | 32 (56%) | |
| Pathological | Negative | 36 (67%) | 36 (63%) |
| margin | Positive | 12 (22%) | 18 (32%) |
| Uncertain | 6 (11%) | 3 (5%) | |
| Number of invaded nodes | 0 | 17 (31%) | 12 (21%) |
| 1 | 11 (20%) | 13 (23%) | |
| ≥2 | 25 (46%) | 30 (53%) | |
| Uncertain | 1 (2%) | 2 (3%) | |
| Interval surgery-RT | ≤9 weeks | 10 (19%) | 11 (19%) |
| >9 weeks | 52 (78%) | 46 (81%) | |
| N/A | 2 (3%) | 0 (0%) | |
| Pathological | Stage II | 19 (35%) | 11 (19%) |
| Stage | Stage III | 18 (33%) | 22 (39%) |
| (AJCC 7-th Ed) | Stage IV A | 14 (26%) | 22 (39%) |
| Stage IVB | 3 (6%) | 2 (3%) | |
| LRC risk score | <7 | 11 (21%) | 29 (51%) |
| ≥7 | 43 (79%) | 28 (49%) |