Table 1.
Baseline patient characteristics.
| Variables | OSCC patients (n = 2313) | Patients completed QoL questionnaires (n = 194) |
|---|---|---|
| Age at diagnosis (years, mean ± SD) |
51.9 ± 10.9 | 52.4 ± 9.8 |
| Gender | ||
| Male | 2147 (92.8%) | 192 (99.0%) |
| Female | 166 (7.2%) | 2 (1.0%) |
| Overall stage | ||
| III | 602 (26.0%) | 56 (28.9%) |
| IVA | 1413 (61.1%) | 113 (58.2%) |
| IVB | 298 (12.9%) | 25 (12.9%) |
| T classification | ||
| T1 | 124 (5.4%) | 16 (8.2%) |
| T2 | 496 (21.4%) | 46 (23.7%) |
| T3 | 428 (18.5%) | 23 (11.9%) |
| T4A | 988 (42.7%) | 84 (43.3%) |
| T4B | 277 (12.0%) | 25 (12.9%) |
| N classification | ||
| N0 | 870 (37.6%) | 105 (54.1%) |
| N1 | 514 (22.2%) | 28 (14.5%) |
| N2 | 918 (39.7%) | 60 (30.9%) |
| N3 | 11 (0.5%) | 1 (0.5%) |
| Curative treatment | ||
| Surgery | 2105 (91.0%) | 174 (89.7%) |
| Adjuvant CRT | 1088 (47.0%) | 123 (63.4%) |
| Adjuvant RT | 448 (19.4%) | 51 (26.3%) |
| Curative RT/CRT | 208 (9.0%) | 20 (10.3%) |
CRT, chemoradiotherapy; QoL, quality of life; OSCC, oral cavity squamous cell carcinoma; RT, radiotherapy; SD, standard deviation.