Late Toxicities after Conventional Radiotherapy for Nasopharyngeal Carcinoma: Incidence and Risk Factors

Table 1

Patients’ characteristics, tumor staging, and treatment parameters.

Characteristic	Number	Percentage
Age (y)
≤20	42	17.5%
>20	197	82.5%
Gender
Male	151	63%
Female	88	37%
T category
T1	9	3.7%
T2a-T2b	56	23.5%
T3	84	35%
T4	90	38%
N category
N0	63	26%
N1	34	14%
N2	94	40%
N3	48	20%
Fractionation
Conventional
70 Gy	97	40%
75 Gy	60	25%
Hyperfractionated	82	35%
Chemotherapy
Yes	159	67%
No	80	33%