Table 4.

General linear model results for nicotine delivery^*

	Combined groups			E-cigarette-experienced users			E-cigarette-naïve cigarette smokers
	F	P value	Partial η²	F	P value	Partial η²	F	P value	Partial η²
Liquid nicotine concentration used in study^†	13.19^‡	<0.001	0.18	9.64^§	0.003	0.15	7.93^¶	0.007	0.12
Presession plasma nicotine concentration	0.150^**	0.699	0.00	5.79^§	0.020	0.10	2.67^¶	0.108	0.05
Puff duration	52.86^**	<0.001	0.31	15.32^§	<0.001	0.22	12.50^¶	0.001	0.18
Puff volume	1.24^**	0.268	0.01	0.24^§	0.628	0.00	0.76^¶	0.387	0.01
Gender	0.55^**	0.460	0.01	0.54^§	0.464	0.01	0.53^¶	0.471	0.01
Race	0.28^**	0.600	0.00	0.04^§	0.847	0.00	0.40^¶	0.529	0.01
Age	0.73^**	0.394	0.01	0.03^§	0.873	0.00	2.56^¶	0.115	0.04
FTND score							0.00^¶	0.989	0.00

Nicotine delivery defined as pre versus post bout difference.

^†

Liquid nicotine concentration categories for both groups (18, 25 and 36 mg/mL), e-cigarette-experienced users (18 and 36 mg/mL), and e-cigarette-naïve smokers (25 and 36 mg/mL).

^‡

(2, 118).

^§

(1, 53).

^¶

(1, 57).

^**

(1, 118).

FTND, Fagerström Test for Nicotine Dependence.