[Table/Fig-2]:

Comparison of cognitive tests between non smokers and Smokers.

	Non smokers	Smokers	p-value
DVT (s)	138.60±9.97	176.54±28.27	0.001
DSST(s)	133.07±15.4	151.58±29.23	0.001
VRT(ms)	184.47±8.97	199.73±21.40	<0.05
LC (s)	23.03±5.26	53.39±15.6	<0.05
Stroop (s)	139.3±13.04	177.61±20.07	<0.05
Immediate word recall	10.0±3.0	6.0±2.0	<0.05
Immediate object recall	10±2.0	7±2.0	<0.05

DVT-digit vigilance test, DSST-Digit symbol substitution test, VRT-visual reaction time, LC-letter cancellation test)