Physiological Responses in Tobacco Chippers

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

COMPLETED

Total Enrollment

178 participants

Study Classification

OBSERVATIONAL

Study Start Date

2010-11-30

Study Completion Date

2013-01-31

Brief Summary

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This study will analyze a series of biological and behavioral markers in different populations of smokers. The study groups will differ in their cigarette consumption and level of nicotine dependence. This analysis will help to identify factors that might be important for smoking behavior and nicotine addiction. The results from this study will contribute to improve campaigns for smoking prevention and treatments for smoking cessation.

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Detailed Description

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Conditions

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Smoking Stress

Study Design

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Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Heavy smokers, 15 or more cigarettes/day

Nicotine dependent.

No interventions assigned to this group

Light smokers (chippers)

Less than 2 cigarettes/day, at least 2 days/week. Non nicotine-dependent.

No interventions assigned to this group

Non smokers

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* healthy adults
* age 25-55

Exclusion Criteria

* alcohol or drug addiction
* unstable significant medical problems
* neurologic disease
* medications known to affect CNS function or impact physiologic parameters measured in the study
* significant visual impairment
* breath carbon monoxide (BCO) level of less than 10 ppm for smokers
* breath carbon monoxide (BCO) level of more than 5 ppm for non-smokers
* for heavy regular smokers: erratic smoking history (i.e. they must have smoked an average of 15 cigarettes daily for at least one year)

Minimum Eligible Age

25 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes