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Smoking Interventions in the General Population

NCT ID: NCT00678938

Last Updated: 2008-05-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

PHASE2

Total Enrollment

1462 participants

Study Classification

INTERVENTIONAL

Study Start Date

2004-10-31

Study Completion Date

2008-10-31

Brief Summary

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The study takes up two problems: 1) Little research exists about general population interventions for smokers not ready to quit within the foreseeable future. 2) There is little evidence for smoking reduction as a behavioural goal in interventions. Interventions based on the Transtheoretical Model of Behavior Change (TTM) using computer expert-system technology yield delayed and smaller effects in smokers in the precontemplation stage of change compared to smokers in more advanced stages of change. Reducing the number of cigarettes smoked per day is currently discussed as an intermediate goal for this subgroup. Epidemiological and clinical studies revealed that smokers are able to maintain a substantial reduction. No undermining effects with respect to smoking cessation have been found. However, there are no studies that test the efficacy of behavioural interventions for smoking reduction using population based recruitment. Objectives: Testing the efficacy of TTM based interventions for general population smokers not intending to quit smoking, i.e. a smoking-reduction and a smoking-cessation tailored intervention using computerized expert-system technology.

Detailed Description

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Conditions

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Tobacco Smoking

Keywords

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smoking reduction smoking cessation stages of change expert system interventions

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Study Groups

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1

Group Type EXPERIMENTAL

Smoking abstinence oriented expert system intervention

Intervention Type BEHAVIORAL

Participants received up to three counselling letters targeting smoking cessation

2

Group Type EXPERIMENTAL

Smoking reduction oriented expert system intervention

Intervention Type BEHAVIORAL

Participants received up to three counselling letters targeting smoking reduction

3

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Smoking abstinence oriented expert system intervention

Participants received up to three counselling letters targeting smoking cessation

Intervention Type BEHAVIORAL

Smoking reduction oriented expert system intervention

Participants received up to three counselling letters targeting smoking reduction

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Daily smoking of 10 or more cigarettes
* No intention to quit within the next six month
* Age of 18 years and older
* valid telephone number

Exclusion Criteria

\- Insufficient german language and cognitive capabilities to complete the assessment
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University Medicine Greifswald

OTHER

Sponsor Role lead

Responsible Party

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Ernst-Moritz-Arndt-University of Greifswald, Institute of Epidemiology and Social Medicine

Principal Investigators

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Christian Meyer, Dr.

Role: PRINCIPAL_INVESTIGATOR

Ernst-Moritz-Arndt-University of Greifswald, Institute of Epidemiology and Social Medicine

Ulrich John, Prof. Dr.

Role: STUDY_DIRECTOR

Ernst-Moritz-Arndt-University of Greifswald, Institute of Epidemiology and Social Medicine

Other Identifiers

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E2_P5, 01EB0420

Identifier Type: -

Identifier Source: org_study_id