Table 1

Parameters	Category	NM-10	OSF-30	OSCC + OSF-30	P-value
Parameters	Category	N (%)	N (%)	N (%)	P-value
Age (years)	< 40	8 (80)	22 (73.3)	11 (36.6)	0.005^b
Age (years)	≥ 40	2 (20)	8 (26.6)	19 (63.3)	0.005^b
Sex	Male	8 (80)	30 (100)	27 (90)	0.72
Sex	Female	2 (20)	0	3 (10)	0.72
Habits	Chewing	-	28 (93.3)	26 (86.6)	0.548
Habits	Mixed	-	2 (6.7)	2 (6.6)	0.548
Frequency	< 5 times	-	17 (56.6)	20 (66.6)	0.426
Frequency	≥ 5 times	-	13 (43.3)	10 (33.3)	0.426
Duration	< 5 years	-	14 (46.6)	11 (36.6)	0.432
Duration	≥ 5 years	-	16 (53.3)	19 (63.3)	0.432
Site	Buccal mucosa	-	-	19 (63.3)	< 0.001^b
Site	Others	-	-	10 (33.3)	< 0.001^b
OSF staging	Stage I and II	-	9 (30)	-	0.11
OSF staging	Stage III and IV	-	21 (70)	-	0.11
OSF grading	Stage I and II	-	22 (73.3)	-	< 0.001^b
OSF grading	Stage III and IV	-	8 (26.6)	-	< 0.001^b
OSCC staging	Stage I and II	-	-	27 (90)	0.028^a
OSCC staging	Stage III and IV	-	-	3 (10)	0.028^a
OSCC grading	Well diff	-	-	23 (76.6)	0.003^b
OSCC grading	Moderately diff	-	-	7 (23.3)	0.003^b
DOI	< 5 mm	-	-	9 (30)	0.741
	5 to 10 mm	-	-	12 (40)
	> 10 mm	-	-	9 (30)
Lymph node	Positive	-	-	11 (36.6)	0.144
Lymph node	Negative	-	-	19 (63.3)	0.144

^aStatistically significant at level P < 0.05, Pearson's Chi-square and at level P < 0.05, Fischer exact test.
^bStatistically highly significant at level P < 0.05, Pearson's Chi-square and at level P < 0.05, Fischer exact test.
NM = normal mucosa; OSF = oral submucous fibrosis; OSCC = oral squamous cell carcinoma; N = number.