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NCT00164580 · ClinicalTrials.gov registry record · Phase 2

Community Intervention Trial for Youth (CITY) Study

A Phase 2 study, sponsored by Centers for Disease Control and Prevention.

Completed
Registry status
Phase 2
Development phase
12,000
Enrollment target

NCT00164580: Completed Phase 2 study, sponsored by Centers for Disease Control and Prevention.

NCT00164580 is a Phase 2 study that has completed, run by Centers for Disease Control and Prevention. The registered enrollment target is 12,000 participants, above the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (8923% higher). According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT00164580, a Phase 2 study, has completed, sponsored by Centers for Disease Control and Prevention.

COMPLETED
Registry status
Phase 2
Development phase
12,000 participants
Enrollment target

Study Summary

The purpose of this study is to test whether a multi-component, community-level, HIV-prevention intervention is more effective than existing HIV prevention activities in reducing unprotected anal intercourse (UAI) among men ages 15-25 who have sex with men.

Interventions

  • BEHAVIORAL Community-Level Intervention

Trial Details

FieldValue
Enrollment Target 12,000 participants
Start Date 1996-10
Est. Completion 2004-08
Phase Phase 2

What the finished NCT00164580 record still lists

NCT00164580 is an interventional study that assigns participants to a tested intervention. Its 12,000 participants enrollment target places it among the larger protocols in the corpus, above the 133-participant average among 30,622 other Phase 2 trials with a reported enrollment target (8923% higher).

The record links to 0 conditions, and to 1 intervention - of which Community-Level Intervention is the first listed.

NCT00164580 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT00164580 about?

NCT00164580 is a clinical study titled "Community Intervention Trial for Youth (CITY) Study". The purpose of this study is to test whether a multi-component, community-level, HIV-prevention intervention is more effective than existing HIV prevention activities in reducing unprotected anal intercourse (UAI) among men ages 15-25 who have sex with men.

What is the current status of trial NCT00164580?

This trial is currently completed. It is a Phase 2 study. The enrollment target is 12,000 participants. The study started on 1996-10. Estimated completion is 2004-08.

What interventions are being tested in trial NCT00164580?

The interventions under investigation include: Community-Level Intervention (BEHAVIORAL).

Who is sponsoring clinical trial NCT00164580?

This trial is sponsored by Centers for Disease Control and Prevention, which has 139 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT00164580's enrollment target sits among peer trials

12,000 1st of 2000 higher than 2,000 of 2,000 other Phase 2 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 2 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

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Source: ClinicalTrials.gov NCT00164580, the US trial registry maintained by the National Library of Medicine. NCT00164580 (large enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.