Table 3.

Results of univariate analysis in identifying factors associated with LRFS, DMFS, OS and DFS.

Factors		5y DFS		5y OS		5y LRFS		5y DMFS
		%	p	%	p	%	p	%	p
Gender	Male	37	0.408	43	0.281	55	0.692	79	0.463
	Female	67		80		67		100
Age	≥50	46	0.00	52	0.003	63	0.000	85	0.032
	<50	16		21		27		61
Primary site	Posterior phayryngeal wall	35	0.453	47	0.853	56	0.772	79	0.564
	Not PPW	39		43		54		80
Pharyngeal wall invasion	Yes	25	0.014	39	0.080	45	0.132	74	0.106
	No	43		45		57		83
T stage	Not T4	44	0.040	44	0.931	58	0.124	83	0.220
	T4	29		46		47		74
N stage	N0-1	49	0.004	57	0.004	66	0.002	78	0.664
	N2-3	29		33		42		81
Level II	Yes	28	0.008	36	0.038	45	0.024	77	0.632
	No	53		56		64		82
Level III	Yes	37	0.473	38	0.060	51	0.559	83	0.219
	No	39		52		54		75
Level IV	Yes	32	0.211	21	0.071	41	0.207	80	0.760
	No	39		48		54		79
No. of LN	≥2	43	0.020	52	0.007	60	0.024	78	0.812
	<2	33		35		45		81
RPLN	Yes	25	0.004	28	0.001	44	0.217	71	0.097
	No	41		48		56		82
Matted LN	Yes	31	0.616	32	0.140	45	0.632	67	0.040
	No	29		39		45		89
ENE	Yes	37	0.305	37	0.612	50	0.465	83	0.129
	No	16		35		38		65
Concurrent chemotherapy	Yes	40	0.699	50	0.093	54	0.909	85	0.086
	No	35		36		53		72