| . | PSECDI . | DSM-5 . | EDS-4 . | GNBQ . |
|---|---|---|---|---|
| Dependence measures | ||||
| PSECDI | ||||
| DSM-5 | 0.55 | |||
| EDS-4 | 0.67 | 0.51 | ||
| GNBQ | 0.60 | 0.56 | 0.73 | |
| ECIG use characteristics | ||||
| Initiation age | −0.16 | −0.25 | 0.01 | −0.11 |
| Years ECIG use | 0.28 | −0.03 | 0.23 | 0.13 |
| ECIG use days per week | 0.44 | 0.24 | 0.30 | 0.29 |
| Liquid (mL) per day | −0.01 | −0.16 | 0.00 | −0.22 |
| # ECIG quit attempts | 0.12 | 0.27 | 0.07 | 0.11 |
| Reasons for ECIG use | ||||
| Friends or family use | 0.11 | 0.12 | 0.04 | 0.04 |
| Curiosity | 0.03 | 0.09 | 0.01 | 0.06 |
| Appealing flavors | 0.09 | 0.25 | 0.15 | 0.21 |
| Less harmful than cigarettes | 0.17 | 0.07 | 0.06 | 0.04 |
| More acceptable to nonsmokers | 0.09 | 0.05 | 0.14 | 0.11 |
| More affordable | −0.07 | 0.05 | −0.03 | 0.02 |
| Perform vape tricks | −0.12 | −0.03 | −0.05 | −0.09 |
| Enhance social status | −0.02 | 0.12 | 0.09 | 0.01 |
| . | PSECDI . | DSM-5 . | EDS-4 . | GNBQ . |
|---|---|---|---|---|
| Dependence measures | ||||
| PSECDI | ||||
| DSM-5 | 0.55 | |||
| EDS-4 | 0.67 | 0.51 | ||
| GNBQ | 0.60 | 0.56 | 0.73 | |
| ECIG use characteristics | ||||
| Initiation age | −0.16 | −0.25 | 0.01 | −0.11 |
| Years ECIG use | 0.28 | −0.03 | 0.23 | 0.13 |
| ECIG use days per week | 0.44 | 0.24 | 0.30 | 0.29 |
| Liquid (mL) per day | −0.01 | −0.16 | 0.00 | −0.22 |
| # ECIG quit attempts | 0.12 | 0.27 | 0.07 | 0.11 |
| Reasons for ECIG use | ||||
| Friends or family use | 0.11 | 0.12 | 0.04 | 0.04 |
| Curiosity | 0.03 | 0.09 | 0.01 | 0.06 |
| Appealing flavors | 0.09 | 0.25 | 0.15 | 0.21 |
| Less harmful than cigarettes | 0.17 | 0.07 | 0.06 | 0.04 |
| More acceptable to nonsmokers | 0.09 | 0.05 | 0.14 | 0.11 |
| More affordable | −0.07 | 0.05 | −0.03 | 0.02 |
| Perform vape tricks | −0.12 | −0.03 | −0.05 | −0.09 |
| Enhance social status | −0.02 | 0.12 | 0.09 | 0.01 |
PSECDI = Penn State Electronic Cigarette Eependence Index, GNBQ = Glover-Nilsson Behavioral Questionnaire, EDS-4 = E-Cigarette Dependence Scale.
Bold item indicates p < .05.
| . | PSECDI . | DSM-5 . | EDS-4 . | GNBQ . |
|---|---|---|---|---|
| Dependence measures | ||||
| PSECDI | ||||
| DSM-5 | 0.55 | |||
| EDS-4 | 0.67 | 0.51 | ||
| GNBQ | 0.60 | 0.56 | 0.73 | |
| ECIG use characteristics | ||||
| Initiation age | −0.16 | −0.25 | 0.01 | −0.11 |
| Years ECIG use | 0.28 | −0.03 | 0.23 | 0.13 |
| ECIG use days per week | 0.44 | 0.24 | 0.30 | 0.29 |
| Liquid (mL) per day | −0.01 | −0.16 | 0.00 | −0.22 |
| # ECIG quit attempts | 0.12 | 0.27 | 0.07 | 0.11 |
| Reasons for ECIG use | ||||
| Friends or family use | 0.11 | 0.12 | 0.04 | 0.04 |
| Curiosity | 0.03 | 0.09 | 0.01 | 0.06 |
| Appealing flavors | 0.09 | 0.25 | 0.15 | 0.21 |
| Less harmful than cigarettes | 0.17 | 0.07 | 0.06 | 0.04 |
| More acceptable to nonsmokers | 0.09 | 0.05 | 0.14 | 0.11 |
| More affordable | −0.07 | 0.05 | −0.03 | 0.02 |
| Perform vape tricks | −0.12 | −0.03 | −0.05 | −0.09 |
| Enhance social status | −0.02 | 0.12 | 0.09 | 0.01 |
| . | PSECDI . | DSM-5 . | EDS-4 . | GNBQ . |
|---|---|---|---|---|
| Dependence measures | ||||
| PSECDI | ||||
| DSM-5 | 0.55 | |||
| EDS-4 | 0.67 | 0.51 | ||
| GNBQ | 0.60 | 0.56 | 0.73 | |
| ECIG use characteristics | ||||
| Initiation age | −0.16 | −0.25 | 0.01 | −0.11 |
| Years ECIG use | 0.28 | −0.03 | 0.23 | 0.13 |
| ECIG use days per week | 0.44 | 0.24 | 0.30 | 0.29 |
| Liquid (mL) per day | −0.01 | −0.16 | 0.00 | −0.22 |
| # ECIG quit attempts | 0.12 | 0.27 | 0.07 | 0.11 |
| Reasons for ECIG use | ||||
| Friends or family use | 0.11 | 0.12 | 0.04 | 0.04 |
| Curiosity | 0.03 | 0.09 | 0.01 | 0.06 |
| Appealing flavors | 0.09 | 0.25 | 0.15 | 0.21 |
| Less harmful than cigarettes | 0.17 | 0.07 | 0.06 | 0.04 |
| More acceptable to nonsmokers | 0.09 | 0.05 | 0.14 | 0.11 |
| More affordable | −0.07 | 0.05 | −0.03 | 0.02 |
| Perform vape tricks | −0.12 | −0.03 | −0.05 | −0.09 |
| Enhance social status | −0.02 | 0.12 | 0.09 | 0.01 |
PSECDI = Penn State Electronic Cigarette Eependence Index, GNBQ = Glover-Nilsson Behavioral Questionnaire, EDS-4 = E-Cigarette Dependence Scale.
Bold item indicates p < .05.
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