Table 2. Comparative analysis of Ki67 labeling index in clinicopathological and survival of all Oral squamous cell carcinoma.

Parameters	Groups	N	Mean	Sta. Dev.	Tukey HSD test/ Independent Samples T Test
Histopathological Grading	WDSCC (A)	100	43,72	5,28	A<B<C P<0.001
	MDSCC (B)	106	59,41	9,75
	PDSCC (C)	11	74,59	9,2
TNM Stage	Stage I (A)	16	46,54	9,35	A<B (p=0.936); B<C (p=0.433); A<C (p=0.370); C<D (p=0.034); A<D (p=0.004); B<D (p<0.001)
	Stage II (B)	52	48,47	12,99
	Stage III (C)	55	51,83	10,15
	Stage IV (D)	94	57,17	11,71
	Early Stage	68	48,01	12,19	P<0.001
	Advanced Stage	149	55,2	11,42
Cervical lymph node metastasis	Non-metastatic	141	49,03	10,83	P<0.001
	Metastatic	76	60,23	10,99
3 years disease free survival (n=217)	Non-survived	69	60,82	10,64	P<0.001
	Survived	148	49,28	10,97
5 years disease free survival (n=150)	Non-survived	69	60,82	10,64	P<0.001
	Survived	80	49,25	10,2
Site	Buccal Mucosa	84	52,04	12,34	One-Way ANOVA P=0.374
	GB Sulcus	69	53,74	11,82
	Tongue	24	53,5	14,43
	Retromolar	16	55,89	6,64
	Palate	10	56,28	13,89
	Labial Mucosa	11	45,79	9,66
	Floor of Mouth	3	55,28	15,09

Note:- OSCC: Oral squamous cell carcinoma, WDSCC: Well differentiated squamous cell carcinoma, MDSCC: Moderately differentiated squamous cell carcinoma, PDSCC: Poorly differentiated squamous cell carcinoma, TNM: Tumor (T) Nodes (N) and Metastasis (M).