E-cigarette support for smoking cessation: Identifying the effectiveness of intervention components in an online randomised optimisation experiment
Not Applicable
Completed
- Conditions
- Smoking cessationNot Applicable
- Registration Number
- ISRCTN54776958
- Lead Sponsor
- Medical Research Council
- Brief Summary
2022 Protocol article in https://doi.org/10.32388/9RDLJA.3 (added 17/10/2022) 2023 Results article in https://doi.org/10.1111/add.16294 (added 21/09/2023)
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Completed
- Sex
- All
- Target Recruitment
- 1214
Inclusion Criteria
1. Aged 18 years old and over
2. Daily smoker
3. UK resident
4. Fluent in English
5. Interested in quitting smoking
6. Interested in using an EC
7. Currently have access to a mobile phone
8. Able to make an online purchase
Exclusion Criteria
1. Currently using an EC daily (exclusively or as a dual user)
2. Unable or unwilling to be contacted in 3 months' time
3. Any affiliation with the tobacco or EC industries
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Complete abstinence over the last 4-weeks, measured using survey questions at the 12-week follow-up on an intention-to-treat basis
- Secondary Outcome Measures
Name Time Method All secondary outcomes will be measured using survey questions at 12 weeks post-randomisation:<br>1. The proportion of participants who reported complete abstinence from smoking over the previous 7 days<br>2. The proportion of participants who reported 50% or greater smoking reduction in baseline cigarette consumption<br>3. Adherence to recommendations measured by asking participants at follow-up, whether they had purchased the device, the nicotine strength and the flavour that was recommended. Participants will be also asked if they had received the email with the information on relative harms, if they had read it and whether they had blocked the text messages (all answers: yes/no).