Telephone-based Treatment for Smoking Cessation

Study Overview
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Brief Summary
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Aim: to assess the effect of adding Motivational Interviewing (MI) to the existing smoking cessation treatment protocol at the Swedish National Tobacco Quitline (SNTQ). Methods: Experienced counsellors at SNTQ either received further training in the standard treatment (ST) protocol (including Cognitive Behavioural Therapy (CBT)) or a comprehensive regime of training in MI. 1309 clients were randomized to either the ST group or the group with MI added to the treatment protocol. In order to ensure treatment integrity among counsellors, MI skill was assessed using the Motivational Interviewing Treatment Integrity Code (MITI).

Official Title
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Motivational Interviewing in Smoking Cessation: A Controlled Clinical Trial at the Swedish National Tobacco Quitline

Conditions
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Smoking Cessation

Intervention / Treatment
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* Behavioral: Standard treatment
* Behavioral: Motivational Interviewing


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Clients have to express a desire for support regarding smoking cessation Clients have to be willing to confirm their identity by answering a baseline registration questionnaire Exclusion Criteria: Clients with obvious difficulties understanding Swedish Clients with obvious mental impairments Clients using tobacco products other than cigarettes (mainly smokeless tobacco, or snus)

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Standard treatment<br> | Behavioral: Standard treatment<br>* Telephone-based smoking cessation counselling based on a combination of coaching and cognitive behavioural therapy (CBT) techniques. Counsellors are also trained in giving tailored advice regarding the use of smoking cessation aids. Clients are offered a choice between reactive treatment (clients initiate all contact) and proactive treatment (counsellors call back at appointed dates). Printed information material tailored to clients' needs is offered free of charge.<br>|
| Experimental: Motivational Interviewing<br> | Behavioral: Motivational Interviewing<br>* Telephone-based smoking cessation counselling with Motivational Interviewing added to the standard treatment protocol. Clients are offered a choice between reactive treatment (clients initiate all contact) and proactive treatment (counsellors call back at appointed dates). Printed information material tailored to clients' needs is offered free of charge.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Point prevalence abstinence | Not one puff of smoke during the previous 7 days | 12 months after initial contact with SNTQ | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Continuous abstinence | Not a single puff of smoke within the past six months or more | 12 months after initial contact with SNTQ | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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smoking cessation, telephone counselling, motivational interviewing, treatment integrity, Tobacco Smoking