Table 1.
Baseline demographics and clinical characteristics of the patients after matching
| Characteristics | Overall | ENPG | IMRT | P-value |
|---|---|---|---|---|
| NO. (%) | NO. (%) | NO. (%) | ||
| No. of patients | 106 | 53 | 53 | |
| Sex | 0.791 | |||
| Male | 89 (84.0) | 45 (84.9) | 44 (83.0) | |
| Female | 17 (16.0) | 8 (15.1) | 9 (17.0) | |
| Median age at recurrence, years (IQR) | 48 (40–56) | 49 (39–55) | 47 (40–57) | 0.992 |
| Median Recurrent-free interval, months (IQR) | 36 (20–73) | 32 (13–79) | 40 (23–61) | 0.355 |
| Histology | 0.780 | |||
| WHO type II + III | 91 (85.8) | 45 (84.9) | 46 (86.8) | |
| WHO type I + others | 15 (14.2) | 8 (15.1) | 7 (13.2) | |
| Recurrent T classification | 1.000 | |||
| rT3 | 56 (52.8) | 28 (52.8) | 28 (52.8) | |
| rT4 | 50 (47.2) | 25 (47.2) | 25 (47.2) | |
| Recurrent N classification | 0.172 | |||
| rN0 | 75 (70.8) | 42 (79.2) | 33 (62.2) | |
| rN1 | 21 (19.8) | 3 (5.7) | 18 (34.0) | |
| rN2 | 8 (7.5) | 7 (13.2) | 1 (1.9) | |
| rN3 | 2 (1.9) | 1 (1.9) | 1 (1.9) | |
| Systemic treatment | 0.807 | |||
| Yes | 85 (80.2) | 43 (81.1) | 42 (79.2) | |
| No | 21 (19.8) | 10 (18.9) | 11 (20.8) |
IQR Inter quartile range; ENPG endoscopic nasopharyngectomy; IMRT intensity-modulated radiotherapy