Table 2.

Correlation coefficients.

Compared Parameters	Group I (controls)	Group II (smokers)	Group III (MPU)
Age versus TSA	0.127	−0.134	−0.022
Age versus MDA	0.124	0.205	−0.066
TSA versus MDA	0.722***	0.517**	0.756***
TSA versus consumed daily cigarette or MP		0.279	0.586***
MDA versus consumed daily cigarette or MP		0.702***	0.872***
TSA versus duration of smoking or MP use		0.268	0.564***
MDA versus Duration of Smoking or MP use		0.454*	0.474**
consumed daily cigarette or MP versus duration of smoking or MP use		0.434*	0.537***
Age versus consumed daily cigarette or MP		0.198	0.062
Age versus duration of Smoking or MP Use		0.477**	0.480**

*P < 0.05; **P < 0.01; ***P < 0.001.