A Study of 358 Cases of Locally Advanced Nasopharyngeal Carcinoma Receiving Intensity-Modulated Radiation Therapy: Improving the Seventh Edition of the American Joint Committee on Cancer T-Staging System

Table 2

Univariate analysis of prognostic values of 386 patients staged at T3/T4.

AJCC 7th staging		5-year; OS		5-year; LRFS		5-year; DMFS		5-year; DFS
		%	P	%	P	%	P	%	P
N0	T3 (12)	91.7	0.658	100	0.324	91.7	0.751	91.7	0.457
	T4 (51)	84.1		92		87.5		82
N1	T3 (20)	100	0.047	100	0.183	100	0.062	100	0.014
	T4 (90)	75.2		89.2		83.5		71.5
N2	T3 (21)	85.2	0.909	81	0.002	95	0.223	81	0.76
	T4 (92)	80.4		97.7		83.2		76.2
N3	T3 (6)	62.5	0.817	100	0.634	66.7	0.916	66.7	0.821
	T4 (54)	59.7		95.9		65.9		55.6
	ALL T3 (59)	89.6	0.105	93.6	0.667	93.2	0.035	88.1	0.033
	ALL T4 (287)	75.5		93.2		80.8		72.8

OS, overall survival; LRFS, local relapse-free survival; DMFS, distant metastasis-free survival; DFS, disease-free survival.