Table 1.

Descriptive characteristics of OSCC

Variable	Category	N	%
Gender	Male	317	52.6
	Female	286	47.4
Age	≤ 40	14	2.3
	>  40	589	97.7
District	Urban	460	76.3
	Suburban	143	23.7
Tumor site	Tongue	207	34.3
	Gingiva	151	25.0
	Cheek	83	13.8
	Mouth floor	54	9.0
	Oropharynx	51	8.5
	Lip	38	6.3
	Palate	19	3.2
T stage	T1–2	397	65.8
	T3–4	206	34.2
Nodal metastasis	N0	394	65.3
	N+	209	34.7
pTNM stage	I	150	24.9
	II	137	22.7
	III	116	19.2
	IV	200	33.2
Tumor differentiation	I	210	46.3
	II	175	38.5
	III	22	4.8
	Unknown	47	10.4
Male	Tobacco	61	19.2
	Alcohol	9	2.8
	Both	137	43.2
	None	110	34.7
Female	Tobacco	13	4.5
	Alcohol	2	0.7
	Both	3	1.0
	None	268	93.7