Efficacy of a smoking cessation intervention using smartphones

Not Applicable

Completed

• Conditions: Smoking cessation; Mental and Behavioural Disorders

• Registration Number: ISRCTN11154315
• Lead Sponsor: niversity of Zurich

Brief Summary

2019 Protocol article in https://www.ncbi.nlm.nih.gov/pubmed/31664959 protocol (added 31/10/2019) 2021 Results article in https://pubmed.ncbi.nlm.nih.gov/34499045/ (added 10/09/2021)

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2018-05-15
• Study Completion: 2020-03-20
• Last Update Posted: 20 September 2021

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 243

Inclusion Criteria

Adult smoker:
1. 18 years or older
2. Daily smoker (at least one cigarette per day)
3. Intention to quit smoking
4. Own a smartphone with access to mobile internet and daily use
5. Fluent in the German language

Buddies:
1. 18 years or older
2. Current non-smoker (at least 6 months abstinence of tobacco and e-cigarettes)
3. Own a smartphone with access to mobile internet and daily use
4. Fluent in the German language

Exclusion Criteria

Adult smoker:
1. Younger than 18 years old
2. Less than daily smoking
3. 24-hour shift work
4. Simultaneous participation in a professional smoking cessation program or active use of a smoking cessation application
5. Insufficient comprehension of the German language.

Buddies:
1. Current smoker
2. 24-hour shift work
3. Younger than 18 years old
4. Insufficient comprehension of the German language

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<br> 1. Smoking abstinence is measured daily during the 28 day quitting period and for a three day period six months after the quit date, using<br> 1.1. Subjective self reporting (daily diary questionnaires) of abstinence and and number of cigarettes smoked<br> 1.2. Objective exhaled carbon monoxide (in parts per million [ppm]) via Smokerlyzer (iCO Smokerlyzer; Bedfont Scientific Ltd)<br>

Secondary Outcome Measures

Name	Time	Method
<br> 1. Intensity and quality of social support is measured daily using self-reporting diary questionnaires throughout the 28 day quitting period and for three days six months after the quit date.<br> 2. Self-efficacy and action control is measured daily using self-reporting diary questionnaires throughout the 28 day quitting period and for three days six months after the quit date.<br> 3. Positive and negative effect is measured daily using self-reporting diary questionnaires throughout the 28 day quitting period and for three days six months after the quit date.<br>