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NCT00325949 · ClinicalTrials.gov registry record · Phase 3

A Study of Pain Relief in Low Back Pain

A Phase 3 study, sponsored by Abbott.

Completed
Registry status
Phase 3
Development phase
770
Enrollment target

NCT00325949: Completed Phase 3 study, sponsored by Abbott.

NCT00325949 is a Phase 3 study that has completed, run by Abbott. The registered enrollment target is 770 participants, roughly in line with the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target. According to ClinicalTrials.gov, the official US trial registry.

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The verdict

NCT00325949, a Phase 3 study, has completed, sponsored by Abbott.

COMPLETED
Registry status
Phase 3
Development phase
770 participants
Enrollment target

Study Summary

This is a study of the safety and pain-relieving ability of extended release hydrocodone and acetaminophen tablets in patients with moderate to severe low back pain

Primary Outcome

Pain intensity difference assessed by the Chronic Low Back Pain Intensity Score (100mm Visual Analog Scale)

Interventions

  • DRUG placebo
  • DRUG Extended release hydrocodone and acetaminophen (Vicodin CR)
  • DRUG hydrocodone/acetaminophen extended release (Vicodin CR)

Trial Details

FieldValue
Enrollment Target 770 participants
Start Date 2006-05
Est. Completion 2007-06
Phase Phase 3
Abbott

181 total trials

What the finished NCT00325949 record still lists

NCT00325949 is an interventional study that assigns participants to a tested intervention. The registered 770 participants enrollment target is mid-sized for trials with a published cap, roughly in line with the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target.

The record links to 0 conditions, and to 3 interventions - of which placebo is the first listed.

NCT00325949 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT00325949 about?

NCT00325949 is a clinical study titled "A Study of Pain Relief in Low Back Pain". This is a study of the safety and pain-relieving ability of extended release hydrocodone and acetaminophen tablets in patients with moderate to severe low back pain

What is the current status of trial NCT00325949?

This trial is currently completed. It is a Phase 3 study. The enrollment target is 770 participants. The study started on 2006-05. Estimated completion is 2007-06.

What interventions are being tested in trial NCT00325949?

The interventions under investigation include: placebo (DRUG), Extended release hydrocodone and acetaminophen (Vicodin CR) (DRUG), hydrocodone/acetaminophen extended release (Vicodin CR) (DRUG).

Who is sponsoring clinical trial NCT00325949?

This trial is sponsored by Abbott, which has 181 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT00325949's enrollment target sits among peer trials

770 440th of 2000 higher than 1,557 of 2,000 other Phase 3 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 3 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 NCT00325949, the US trial registry maintained by the National Library of Medicine. NCT00325949 (mid enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.