TABLE 5.

Withdrawal and urge to use e-cigarette before and after 15 puffs

Scale	Pre	Post	p-value
MNWS (0, none; 4, severe)
Angry, irritable, frustrated	0.8 (1.0)	0.2 (0.4)	0.06
Anxious, nervous	1.0 (1.0)	0.5 (0.8)	0.05
Depressed mood, sad	0.2 (0.5)	0.0 (0.0)	0.19
Desire or craving to smoke	1.9 (1.2)	0.7 (0.9)	0.007
Difficulty concentrating	1.0 (1.0)	0.6 (1.0)	0.05
Increased appetite, hungry	0.3 (0.4)	0.3 (0.5)	1.00
Restless	1.0 (0.9)	0.7 (0.9)	0.17
Impatient	1.3 (1.1)	0.5 (0.8)	0.01
Dizziness	0.0 (0.0)	0.8 (1.2)	0.03
Increased coughing	0.1 (0.2)	0.1 (0.3)	1.00
Nausea	0.0 (0.0)	0.2 (0.6)	0.19
Sorethroat	0.2 (0.5)	0.2 (0.4)	0.34
MNWS total score (of 48)	7.8 (5.2)	4.8 (4.2)	0.007
QSU (0, strongly disagree; 7, strongly agree)
Desire for e-cigarette now	4.5 (1.7)	2.5 (1.4)	0.002
Nothing better than to vape now	3.9 (0.9)	2.0 (1.0)	<0.001
Would vape if possible	5.8 (1.5)	3.3 (2.1)	0.002
Would control thing better	2.5 (1.5)	1.5 (0.9)	0.02
All I want is an e-cigarette	3.4 (1.3)	1.6 (1.0)	<0.001
Urge for e-cigarette	4.6 (1.8)	2.2 (1.5)	0.002
An e-cigarette would taste good	5.1 (1.5)	2.8 (1.6)	0.001
Would do anything for an e-cigarette	2.4 (1.6)	1.3 (0.6)	0.03
Vaping would make me less depressed	2.3 (1.5)	1.2 (0.6)	0.02
Will vape and soon as possible	4.8 (1.8)	3.3 (2.1)	0.02
QSU total score (of 7)	3.2 (1.2)	2.2 (1.1)	<0.001
PANAS
PANAS positive affect score (of 50)	26.4 (6.3)	26.5 (6.8)	0.99
PANAS negative affect score (of 50)	13.6 (3.7)	11.2 (1.5)	0.03