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NCT00000258 · ClinicalTrials.gov registry record · NA
Role of Instructions in Nitrous Oxide Effects and Choice - 10
A NA study, sponsored by University of Chicago.
- Completed
- Registry status
- NA
- Development phase
- 22
- Enrollment target
NCT00000258: Completed NA study, sponsored by University of Chicago.
NCT00000258 is a NA study that has completed, run by University of Chicago. The registered enrollment target is 22 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (98% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00000258, a NA study, has completed, sponsored by University of Chicago.
- COMPLETED
- Registry status
- NA
- Development phase
- 22 participants
- Enrollment target
Study Summary
The purpose of this study is to conduct experiments to examine subjective and reinforcing effects of nitrous oxide. Mood altering and psychomotor effects will be tested on non-drug abusers and preference procedures will be used to assess reinforcing effects. Comparisons between nitrous oxide, opiates, and benzodiazepine antagonists will be made. To evaluate the role of instructions in nitrous oxide subjective effects and choice.
Primary Outcome
Subjects inhaled placebo and varying per centages of nitrous oxide in sampling pair, then chose for third inhalation. One group was told which of the gases they were inhaling during sampling and one group as well as the technician administering the inhalant was blinded. Psychomotor tests were done at each dose.
Interventions
- DRUG Nitrous oxide 10% & placebo
- DRUG Nitrous oxide 20% & placebo
- DRUG Nitrous oxide 30% & placebo
- DRUG Nitrous oxide 40% and placebo
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 22 participants |
| Start Date | 1996-04 |
| Est. Completion | 1997-11 |
| Phase | NA |
What the finished NCT00000258 record still lists
NCT00000258 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 22 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (98% lower).
The record links to 0 conditions, and to 4 interventions - of which Nitrous oxide 10% & placebo is the first listed.
NCT00000258 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00000258 about?
NCT00000258 is a clinical study titled "Role of Instructions in Nitrous Oxide Effects and Choice - 10". The purpose of this study is to conduct experiments to examine subjective and reinforcing effects of nitrous oxide. Mood altering and psychomotor effects will be tested on non-drug abusers and preference procedures will be used to assess reinforcing effects. Comparisons between nitrous oxide, opiate...
What is the current status of trial NCT00000258?
This trial is currently completed. It is a NA study. The enrollment target is 22 participants. The study started on 1996-04. Estimated completion is 1997-11.
What interventions are being tested in trial NCT00000258?
The interventions under investigation include: Nitrous oxide 10% & placebo (DRUG), Nitrous oxide 20% & placebo (DRUG), Nitrous oxide 30% & placebo (DRUG), Nitrous oxide 40% and placebo (DRUG).
Who is sponsoring clinical trial NCT00000258?
This trial is sponsored by University of Chicago, which has 796 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00000258's enrollment target sits among peer trials
22 1756th of 2000 higher than 239 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA 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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