Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT00338195 · ClinicalTrials.gov registry record · Phase 1

Assessment and Treatment of Caffeine Dependence

A Phase 1 study, sponsored by Johns Hopkins University.

Completed
Registry status
Phase 1
Development phase
94
Enrollment target

NCT00338195: Completed Phase 1 study, sponsored by Johns Hopkins University.

NCT00338195 is a Phase 1 study that has completed, run by Johns Hopkins University. The registered enrollment target is 94 participants, above the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (57% higher). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist → Add completion date to calendar (.ics) →

The verdict

NCT00338195, a Phase 1 study, has completed, sponsored by Johns Hopkins University.

COMPLETED
Registry status
Phase 1
Development phase
94 participants
Enrollment target

Study Summary

Recent research has established that some individuals report that they are unable to cease caffeine use, despite feeling that caffeine is posing a health risk or causing significant impairment in their daily activities. Despite the high rates of unsuccessful efforts to cease or control caffeine use in the population, there has been little research on the parameters of successful caffeine reduction and no research on caffeine cessation. The goals of the study are as follows: 1. evaluate the applicability of DSM-IV dependence criteria for self-reported problematic caffeine use. 2. evaluate characteristics (e.g, co-morbid psychopathology) of individuals who report that they have had difficulty quitting caffeine use on their own and who are seeking treatment for caffeine use. 3. test the efficacy of a caffeine reduction treatment administered to individuals who would like to quit/reduce caffeine use, but have found it difficult to do so in the past.

Interventions

  • BEHAVIORAL Individualized caffeine cessation instructions

Trial Details

FieldValue
Enrollment Target 94 participants
Start Date 2001-05
Est. Completion 2009-12
Phase Phase 1
Johns Hopkins University

1,448 total trials

What the finished NCT00338195 record still lists

NCT00338195 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 94 participants, a relatively small participant target, above the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (57% higher).

The record links to 0 conditions, and to 1 intervention - of which Individualized caffeine cessation instructions is the first listed.

NCT00338195 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT00338195 about?

NCT00338195 is a clinical study titled "Assessment and Treatment of Caffeine Dependence". Recent research has established that some individuals report that they are unable to cease caffeine use, despite feeling that caffeine is posing a health risk or causing significant impairment in their daily activities. Despite the high rates of unsuccessful efforts to cease or control caffeine use ...

What is the current status of trial NCT00338195?

This trial is currently completed. It is a Phase 1 study. The enrollment target is 94 participants. The study started on 2001-05. Estimated completion is 2009-12.

What interventions are being tested in trial NCT00338195?

The interventions under investigation include: Individualized caffeine cessation instructions (BEHAVIORAL).

Who is sponsoring clinical trial NCT00338195?

This trial is sponsored by Johns Hopkins University, which has 1,448 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT00338195's enrollment target sits among peer trials

94 615th of 2000 higher than 1,377 of 2,000 other Phase 1 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 1 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT03747146 · 94 participants · NA

    Enhanced Recovery After Surgery (ERAS) Total Knee Replacement (TKR) With a Transitional Pain Service

  • NCT04061421 · 94 participants · Phase 1

    Active Myeloid Target Compound Combinations in MDS/MPN Overlap Syndromes Overlap Syndromes (ABNL-MARRO)

  • NCT04205968 · 94 participants · Phase 2

    Ramucirumab and Paclitaxel or FOLFIRI in Advanced Small Bowel Cancers

  • NCT04464759 · 94 participants · Phase 1

    A Study of Nivolumab and Hydroxychloroquine or Nivolumab/Ipilimumab and Hydroxychloroquine in Advanced Melanoma

Similar registry start date

  • NCT05988463 · started 2027-01-01 · Phase 1

    Dose-Escalation Study of Artesunate Patients With IPF

  • NCT07219706 · started 2026-12-10 · NA

    Dietary Fiber and Time Restricted Eating

  • NCT02831335 · started 2026-12-01

    Technical Development of Multi-Parametric Renocerebral MRI

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

Source: ClinicalTrials.gov NCT00338195, the US trial registry maintained by the National Library of Medicine. NCT00338195 (small enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.