Table 7.

Association between chewing time with clinical grading of oral submucous fibrosis

Chewing time (min)	Grade I	%	Grade II	%	Grade III	%	Total	%	Chi-square	P value
0–5	11	33.33	20	60.61	2	6.06	33	16.50	6.5927	0.3602
6–10	18	22.78	56	70.89	5	6.33	79	39.50
11–15	21	38.18	29	52.73	5	9.09	55	27.50
>15	7	21.21	22	66.67	4	12.12	33	16.50
Total	57	28.50	127	63.50	16	8.00	200	100.00

*P < 0.05 (P value less than 0.05 is considered to be significant)