Introduction
Methods
Measures
Vaping measures
Analysis
Results
Frequency | |
---|---|
Frequency of EC use per day | |
Less than 5 times per day | 46% |
5–9 times per day | 20% |
10 or more times per day | 34% |
Type of EC product used most often | |
Cigalike | 12% |
Tank | 68% |
Mods | 18% |
Other | 2% |
E-liquid contains nicotine | |
Yes | 80% |
No | 11% |
Don’t know/Not sure | 9% |
Usual E-liquid nicotine content | |
0 mg | 7% |
1–12 mg | 39% |
13–17 mg | 18% |
18 or more mg | 23% |
Don’t know/Not sure | 14% |
Enjoy vaping more than smoking | |
Yes | 40% |
No | 60% |
On vaping days, which is used first | |
Cigarette | 76% |
EC | 24% |
Vaping Dependence Measures | % | Smoking Dependence Measures | % | |||
---|---|---|---|---|---|---|
Minutes after waking use first EC | Minutes after waking use first cigarette | |||||
5 or less | 31% | 5 or less | 24% | |||
6–30 | 24% | 6–30 | 31% | |||
31–120 | 24% | 31–120 | 38% | |||
121+ | 21% | 121+ | 7% | |||
Nights per week wake to use EC | Nights per week wake to smoke | |||||
Never/less than weekly | 73% | Never/less than weekly | 54% | |||
1 to 2 | 12% | 1 to 2 | 23% | |||
3 or more | 15% | 3 or more | 23% | |||
Continue using EC because hard to quit | Continue to smoke because hard to quit | |||||
Yes | 44% | Yes | 80% | |||
No | 56% | No | 20% | |||
Ever have strong cravings to use EC | Ever have strong cravings to smoke | |||||
Yes | 33% | Yes | 84% | |||
No | 67% | No | 16% | |||
How strong were urges to vape, past week | How strong were urges to smoke in past week | |||||
None | 44% | None | 0% | |||
Slight | 34% | Slight | 18% | |||
Moderate | 10% | Moderate | 25% | |||
Very/extremely strong | 22% | Very/extremely strong | 57% | |||
Hard to keep from using EC | Hard to keep from smoking | |||||
Yes | 36% | Yes | 58% | |||
No | 64% | No | 42% | |||
WHEN HAVE NOT USED [EC; tobacco] for a while OR when you tried to stop [vaping; smoking] …
| ||||||
Irritable because can’t use EC | Irritable because can’t smoke | |||||
Yes | 32% | Yes | 73% | |||
No | 68% | No | 27% | |||
Nervous because can’t vape | Nervous because can’t smoke | |||||
Yes | 32% | Yes | 66% | |||
No | 68% | No | 34% | |||
Composite Dependence Scores | p-value* | |||||
Heaviness of Vaping Index [32] | Mean (SD) | 2.07 (1.76) | Heaviness of Smoking Index [33] | Mean (SD) | 2.36 (1.66) | .2155 |
PSDI-EC [32] | Mean (SD) | 6.42 (4.84) | PSDI-smoking [32] | Mean (SD) | 11.02 (5.00) | <.0001 |