T4-Locally Advanced Nasopharyngeal Carcinoma: Prognostic Influence of Cranial Nerve Involvement in Different Radiotherapy Techniques

Table 1

Patients characteristics in different radiotherapy techniques (𝑛=83).

	3D-CRT (𝑛=53)		IMRT (𝑛=30)
	Number	Percentage (%)	Number	Percentage (%)
Age	Mean: 52.3±13.9		Mean: 48.2±14.0		𝑃=0.14
	(range: 18–78)		(range: 19–78)
Sex
Male	44	83.0	25	83.3	𝑃=0.97
Female	9	17.0	5	16.7
N stage
N0	12	22.6	3	10.0	𝑃=0.28
N1	17	32.1	7	23.3
N2	23	43.4	19	63.3
N3	1	1.9	1	3.3
Chemotherapy
Yes	32	60.4	25	83.3	𝑃=0.03
No	21	39.6	5	16.7
CN involvement
Yes	41	77.4	13	43.3	𝑃=0.002
No	12	22.6	17	56.7

𝑃 value of <0.05 indicates statistical significance.
3D-CRT: three-dimensional conformal radiotherapy; IMRT: intensity-modulated radiotherapy; CN: cranial nerve.