Table 5.

SpCO, HR and SpO2 correlation with smoking habits and demographics of the smokers

Variables	SpCO		HR		SpO2
	r	p-value	r	p-value	r	p-value
Age	0.242	0.005	-0.329	< 0.001	0.154	0.074
BMI	0.119	0.166	-0.129	0.135	-0.138	0.110
Years smoking	0.260	0.002	-0.335	< 0.001	0.182	0.034
Cigarettes per day	0.073	0.400	0.023	0.793	-0.056	0.514
FTND-total score	0.173	0.044	-0.033	0.706	-0.022	0.797

FTND: Fagerström Test for Nicotine Dependence, r: Correlation coefficient