Smoking Clinical Trial
Official title:
The Contribution of a Smartphone Application to Acceptance and Commitment Therapy Group Treatment for Smoking Cessation: a Randomised Controlled Trial Investigating Its Efficacy, Mediators and Moderators
The purpose of this study is to evaluate the efficacy of a smartphone application in enhancing Acceptance and Commitment Therapy group treatment for smoking cessation. This study also aims to elucidate the processes through which the treatment promotes smoking cessation and for whom it is most effective.
Smoking is the single biggest preventable cause of death in Ireland and costs the exchequer
approximately €1-2 billion per annum. Currently, 19.2% of Irish people aged 15 and over
smoke. Given the magnitude of human suffering and economic cost associated with smoking, the
systematic empirical development of cost-effective smoking cessation interventions is a major
public health need. Combining a group-based treatment for smoking cessation with a
theoretically-consistent smartphone application has the advantage of augmenting therapeutic
content delivered in the clinic with on-the-spot assistance in the individual's natural
environment. In accordance, this study will evaluate the efficacy of a smartphone application
in enhancing Acceptance and Commitment Therapy group treatment for smoking cessation. This
study will also elucidate the processes through which the treatment promotes smoking
cessation. Identifying such mediators of change can inform the enhancement of subsequent
interventions, enabling them to retain efficacious elements and disregard redundant elements.
Furthermore, this study will identify the participant characteristics associated with
differential response to the treatment. Clarifying such treatment moderators can facilitate
practitioners in selecting optimal treatments for individual service users.
Participants will attend a baseline assessment on an individual basis prior to their smoking
cessation attempt. During this session, participants will provide a breath sample and
complete a series of self-report measures: Fagerström Test of Nicotine Dependence, Commitment
to Quitting Scale, smoking-related variables (e.g., years smoking, previous quit attempts,
etc.), Avoidance and Inflexibility Scale, Mental Health Continuum-Short Form, Valuing
Questionnaire, Present Moment Awareness Subscale of the Philadelphia Mindfulness Scale, and
the Cognitive Fusion Questionnaire. Participants will then be randomly allocated to the
combined treatment, ACT group treatment or group based Behavioural Support Programme. A
post-treatment assessment will be conducted to investigate changes in the variables measured
at baseline. In addition, a six-month follow-up assessment will determine whether the effects
of the treatments are sustained over an extended period of time.
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