Back to overview
ISRCTN11154315

Efficacy of a smoking cessation intervention using smartphones

Data source: WHO (Imported from 29.03.2024)
Changed: Jan 31, 2021, 1:02 AM
Disease category:

Health conditions (Data source: WHO)

Smoking cessation
Mental and Behavioural Disorders
Smoking cessation

Interventions (Data source: WHO)


Participants are randomly allocated to the intervention or control group.
All participants attend a background assessment session at the University of Zurich. They are instructed to use a breathalyzer to measure exhaled carbon monoxide, and are instructed to announce a self-quit date.
All participants receive an end of day diary (short questionnaire) which is filled out daily from 7 days before their quit date until 21 days after their quit date, and a breathalyzer to measure carbon monoxide output daily during this period.
Participants are also followed up with a daily diary for three days, six months after their quit date.

Participants in the intervention group are additionally instructed to use the SmokeFree Buddy app” during 28 consecutive days (7 days prior to the quit date and 21 days afterwards). More information on the SmokeFree Buddy app”: https://www.smokefree.ch/en/buddy-app/
With the SmokeFree Buddy app participants also have to identify a personal buddy (self-chosen from the personal social network). These buddies get an instruction on how to connect with the target person and to use the SmokeFree Buddy app during the 28 consecutive days to support the smoker in his/her cessation process.

Participants in the control group will have the same setting, but do not receive the mobile intervention SmokeFree Buddy app” and therefore do not have a supporting buddy.

Inclusion/Exclusion Criteria (Data source: WHO)

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

Further information on the trial in WHO primary registry

http://isrctn.com/ISRCTN11154315

Further information on the trial from WHO database (ICTRP)

https://trialsearch.who.int/Trial2.aspx?TrialID=ISRCTN11154315
Further information on trial

Date trial registered

May 15, 2018

Incorporation of the first participant

Apr 15, 2018

Recruitment status

Completed

Academic title (Data source: WHO)

Efficacy of a randomized controlled trial to promote smoking cessation using mobile applications

Type of trial (Data source: WHO)

Interventional

Design of the trial (Data source: WHO)

Single-blind two-arm parallel-group randomized controlled trial with longitudinal design (Treatment)

Phase (Data source: WHO)

Not Applicable

Primary end point (Data source: WHO)

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
1.1. Subjective self reporting (daily diary questionnaires) of abstinence and and number of cigarettes smoked
1.2. Objective exhaled carbon monoxide (in parts per million [ppm]) via Smokerlyzer (iCO Smokerlyzer; Bedfont Scientific Ltd)

Secundary end point (Data source: WHO)

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.
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.
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.

Contact information (Data source: WHO)

Universität Zürich

Trial results (Data source: WHO)

Results summary

2019 protocol in: https://www.ncbi.nlm.nih.gov/pubmed/31664959 (added 31/10/2019)

Link to the results in the primary register

no information available yet

Information on the availability of individual participant data

Available on request
Planned publication in a high impact peer-reviewed journal. IPD sharing statement: The datasets generated during and/or analysed during the current study are/will be available upon request from: Dr. Corina Berli Applied Social and Health Psychology Address: Binzmühlestrasse 14 / Box 14, CH-8050 Zürich corina.berli@psychologie.uzh.ch

Trial sites

Countries (Data source: WHO)

Switzerland

Contact for further information on the trial

Contact for scientific information (Data source: WHO)

Philipp
Schwaninger
University of Zurich Binzmühlestrasse 14 / 14
+41 44 635 72 25
philipp.schwaninger@uzh.ch

Further trial identification numbers

Secondary ID (Data source: WHO)

Nil known
Back to overview