Table 9.

Correlation between clinical grading of oral submucous fibrosis with various factors by Spearman’s rank correlation

Factors	N	Spearman R	t-value	P-level
Gender	200	−0.1382	−1.9630	0.0510
Age groups	200	−0.1474	−2.0963	0.0373*
Paan masala	200	0.0297	0.4175	0.6768
Gutkha	200	0.1344	1.9083	0.0578
Paan	200	−0.2281	−3.2963	0.0012*
Combination	200	0.1475	2.0978	0.0372*
Functional grading	200	0.3967	6.0819	0.0001*
Frequency	200	0.3872	5.9095	0.0001*
Duration	200	−0.0027	−0.0386	0.9693
Contents	200	0.0683	0.9632	0.3366
Chewing time	200	0.0300	0.4225	0.6732

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