TABLE 1. Comparative Multiple Regression Analysis of variables between smokers (n=29) and non-smokers (n=26).

Variable	Smoker	Non-smoker
Age (years)	40.2 (±6.6)	40.8 (±6.1)
N° cigaretts/day	24.5 (±15.2)
Gender	55.2% F	65.4% M
	44.8% F	34.6% M