Clinical trial NCT01121887: Telephone-based Treatment for Smoking Cessation
Official title: Motivational Interviewing in Smoking Cessation: A Controlled Clinical Trial at the Swedish National Tobacco Quitline
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE3
Conditions: Smoking Cessation
Keywords: smoking cessation
telephone counselling
motivational interviewing
treatment integrity
Tobacco Smoking
Lead sponsor: Karolinska Institutet
Sponsor class: OTHER
Collaborators: name: Region Stockholm
First posted: 2010-05-12
Enrollment: 1309
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: 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).


Eligibility criteria: 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")

Primary outcomes:
measure: Point prevalence abstinence
timeFrame: 12 months after initial contact with SNTQ
Secondary outcomes:
measure: Continuous abstinence
timeFrame: 12 months after initial contact with SNTQ
Other outcomes:
Locations:
city: Stockholm
country: Sweden
facility: Asgeir R. Helgason
Study officials:
affiliation: Karolinska Institutet
name: Asgeir R Helgason, PhD
role: PRINCIPAL_INVESTIGATOR
affiliation: Karolinska Institutet
name: Lars Forsberg, PhD
role: STUDY_DIRECTOR
References:
citation: Helgason AR, Tomson T, Lund KE, Galanti R, Ahnve S, Gilljam H. Factors related to abstinence in a telephone helpline for smoking cessation. Eur J Public Health. 2004 Sep;14(3):306-10. doi: 10.1093/eurpub/14.3.306.
citation: Nohlert E, Tegelberg A, Tillgren P, Johansson P, Rosenblad A, Helgason AR. Comparison of a high and a low intensity smoking cessation intervention in a dentistry setting in Sweden: a randomized trial. BMC Public Health. 2009 Apr 30;9:121. doi: 10.1186/1471-2458-9-121.
citation: Forsberg L, Berman AH, Kallmen H, Hermansson U, Helgason AR. A test of the validity of the motivational interviewing treatment integrity code. Cogn Behav Ther. 2008;37(3):183-91. doi: 10.1080/16506070802091171.
citation: Forsberg L, Kallmen H, Hermansson U, Berman AH, Helgason AR. Coding counsellor behaviour in motivational interviewing sessions: inter-rater reliability for the Swedish Motivational Interviewing Treatment Integrity Code (MITI). Cogn Behav Ther. 2007;36(3):162-9. doi: 10.1080/16506070701339887.