Mediated effects of a randomised control trial for a text messaging smoking cessation intervention for online help-seekers and primary care visitors.
Digital intervention
Mediator
Public health
Randomised controlled trial
Smoking cessation intervention
Journal
BMC public health
ISSN: 1471-2458
Titre abrégé: BMC Public Health
Pays: England
ID NLM: 100968562
Informations de publication
Date de publication:
09 Jul 2024
09 Jul 2024
Historique:
received:
18
01
2024
accepted:
25
06
2024
medline:
9
7
2024
pubmed:
9
7
2024
entrez:
8
7
2024
Statut:
epublish
Résumé
Digital smoking cessation interventions have been shown to be effective in helping individuals achieve prolonged smoking abstinence. Nonetheless, the mechanisms that drive such effects are unclear. The current study aimed to estimate a digital smoking cessation intervention's natural direct and indirect effects. This secondary analysis of mediated effects uses data from a randomised controlled trial which included participants who smoked at least one cigarette a week, had access to a mobile phone, and were 18 years or older. The comparator was existing smoking cessation support available to all members of the Swedish public. Primary outcomes were prolonged smoking abstinence and point prevalence of smoking abstinence, measured at 3- and 6-months post-randomisation. A counterfactual framework was used to estimate three hypothesised mediators of the intervention's effects: importance, knowledge of how to change (know-how), and confidence. Between 18/09/20 and 16/06/22, 1012 participants were randomised. The intervention led to improved confidence and know-how, which both partially mediated the effects of the digital intervention on smoking abstinence at 3- and 6 months post-randomisation. A digital smoking cessation intervention was found to partially affect smoking abstinence by improving individuals' confidence in their ability to quit smoking and developing knowledge on how to quit. Face-value single-item mediator measures, lack of blinding, and attrition limit the study. Future studies should address these limitations and assess additional mechanisms mediating intervention effects. ISRCTN13455271.
Sections du résumé
BACKGROUND AND AIMS
OBJECTIVE
Digital smoking cessation interventions have been shown to be effective in helping individuals achieve prolonged smoking abstinence. Nonetheless, the mechanisms that drive such effects are unclear. The current study aimed to estimate a digital smoking cessation intervention's natural direct and indirect effects.
METHODS
METHODS
This secondary analysis of mediated effects uses data from a randomised controlled trial which included participants who smoked at least one cigarette a week, had access to a mobile phone, and were 18 years or older. The comparator was existing smoking cessation support available to all members of the Swedish public. Primary outcomes were prolonged smoking abstinence and point prevalence of smoking abstinence, measured at 3- and 6-months post-randomisation. A counterfactual framework was used to estimate three hypothesised mediators of the intervention's effects: importance, knowledge of how to change (know-how), and confidence.
RESULTS
RESULTS
Between 18/09/20 and 16/06/22, 1012 participants were randomised. The intervention led to improved confidence and know-how, which both partially mediated the effects of the digital intervention on smoking abstinence at 3- and 6 months post-randomisation.
CONCLUSIONS
CONCLUSIONS
A digital smoking cessation intervention was found to partially affect smoking abstinence by improving individuals' confidence in their ability to quit smoking and developing knowledge on how to quit. Face-value single-item mediator measures, lack of blinding, and attrition limit the study. Future studies should address these limitations and assess additional mechanisms mediating intervention effects.
TRIAL REGISTRATION
BACKGROUND
ISRCTN13455271.
Identifiants
pubmed: 38977972
doi: 10.1186/s12889-024-19273-4
pii: 10.1186/s12889-024-19273-4
doi:
Types de publication
Journal Article
Randomized Controlled Trial
Langues
eng
Sous-ensembles de citation
IM
Pagination
1824Subventions
Organisme : Region Östergötland
ID : LIO-896081
Organisme : Region Östergötland
ID : LIO-896081
Organisme : Region Östergötland
ID : LIO-896081
Organisme : Region Östergötland
ID : LIO-896081
Organisme : Region Östergötland
ID : LIO-896081
Informations de copyright
© 2024. The Author(s).
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