Table 5.

Regression analyzes of the Day −1 to Day 5% change in the amount of urine biomarker amount excreted against the % change in cigarettes per day (CPD).

Urine biomarker	Slope	R-square	p Value
NNAL	0.4154	0.1518	0.0108
3-HPMA	0.6940	0.4105	<0.0001
HMPMA	0.7878	0.4289	<0.0001
CEMA	0.7096	0.4891	<0.0001
1-OHP	0.6297	0.4227	<0.0001
NNN	0.7766	0.3181	0.0001
MHBMA	0.7469	0.2874	0.0003
S-PMA	0.7259	0.4636	<0.0001
Nicotine Equivalents	−0.0296	0.0002	0.9316