Table 1. Frequency of clinical characteristics at presentation.

		n	%
Gender	Male	233	46.1
	Female	271	53.7
Any tobacco use	No	124	51.5
	Yes	117	48.5
Any cigarette smoking	Never	121	51.1
	Former	86	36.3
	Current	30	12.7
Any alcohol consumption	Never	130	55.8
	Former	22	9.4
	Current	81	34.8
Nasal involvement of original tumor at presentation	No	61	12.9
	Yes	411	87.1
Sinus involvement of original tumor at presentation	No	293	59.6
	Yes	199	40.4
Skull base involvement of original tumor at presentation	No	194	74.9
	Yes	65	25.1
Intracranial involvement of original tumor at presentation	No	260	94.5
	Yes	15	5.5
T-Stage	T3	239	60.1
	T4a	120	30.2
	T4b	39	9.8
N-Stage	N0	447	91.2
	N1	43	8.8
M-Stage	M0	329	94.3
	M1	20	5.7