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Extended Duration Counseling for Tobacco Addiction (EDC Trial)

Phase 4
Waitlist Available
Research Sponsored by Harvard University Faculty of Medicine
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
* Daily Cigarette Smokers
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up up to 5 years
Awards & highlights

Summary

The purpose of this study is to determine if extending the behavioral smoking-cessation treatment period to one year will significantly improve cessation outcomes among those planning a quit attempt.

Eligible Conditions
  • Tobacco Addiction

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~up to 5 years
This trial's timeline: 3 weeks for screening, Varies for treatment, and up to 5 years for reporting.

Treatment Details

Trial Design

3Treatment groups
Active Control
Placebo Group
Group I: Extended Duration CounselingActive Control1 Intervention
12-Month Duration
Group II: Moderate Duration CounselingActive Control1 Intervention
6-Month Duration
Group III: Brief-Duration CounselingPlacebo Group1 Intervention
3-Month Duration

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Who is running the clinical trial?

Harvard University Faculty of MedicineLead Sponsor
14 Previous Clinical Trials
23,094 Total Patients Enrolled
National Institute on Drug Abuse (NIDA)NIH
2,543 Previous Clinical Trials
3,248,926 Total Patients Enrolled
~26 spots leftby Sep 2025
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