Electronic cigarettes: An intervention for dual-users

INTERVENTION: The study conducts a psycho‐educational intervention with dual‐users who have the intention to completely and exclusively switch to vaping e‐cigs within six months. The intervention will contain the following elements: (a) providing correct information about the expected health effects of “dual use” vs. completely switching (pros and cons for both short as long term), including corrective information about the harm of nicotine, (b) broadening practical knowledge about the different kinds of e‐liquids and e‐cigs and the optimal use of these, and (c) components aimed at increasing motivation (offering perspective on success) and self‐efficacy (how to handle situations in which people still smoke tobacco cigarettes). Whether the intervention eventually helped will be examined by using questionnaires that identify smoking/vaping behaviour and by biological validation of smoking cessation through eCO‐measurements. The participants are randomly assigned to either the intervention group or the control/waiting group: The intervention group will have three contact moments (after intake). During the first contact the actual psycho‐education will take place. The first and second follow‐up will take place after three and six months after the intervention. During each contact participants are asked to fill out the questionnaires and to perform an eCO‐measurment. For the second follow‐up, the questionnaire will be expanded with questions about which aspects of the interventions they thought were helpful or not. The control/waiting group will also have three contact moments (after intake), but these are later in time in comparison to the intervention group. Their first contact, at which the psycho‐education is conducted, takes place three months after intake. Six and nine months after intake (respectively three and six months after intervention), the second and third contact take place. During each contact the same questionnaires and eCO‐measurements as in th CONDITION: Smoking ; ; PRIMARY OUTCOME: The most important outcome measures in this study are the answers on the questionnaires (number of tobacco cigarettes that are still smoked and the comparison between the two groups) and the eCO‐measurement. SECONDARY OUTCOME: Secondary outcome measures are the other answers to the questionnaires, e.g.: in which situations do people still smoke tobacco cigarettes, which amount of e‐liquid do people still use, etc. INCLUSION CRITERIA: Dual‐users (people who smoke tobacco cigarettes and vape e‐cigs) who have the intention to completely and exclusively switch to vaping e‐cigs within six months.