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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 two years
Awards & highlights

EDC Trial 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

EDC Trial Eligibility Criteria

Inclusion Criteria

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

EDC Trial Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~one year
This trial's timeline: 3 weeks for screening, Varies for treatment, and one year for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Proportion of subjects abstinent by treatment group at 1 year post-cessation.
Secondary outcome measures
Proportion of subjects abstinent by treatment group at 2 years post-cessation.

EDC 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
2,447 Previous Clinical Trials
2,593,616 Total Patients Enrolled

Frequently Asked Questions

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.
~26 spots leftby Mar 2025