Completed
Role of Instructions in Nitrous Oxide Effects and Choice - 10
0 criteria met from your profileSee at a glance how your profile meets each eligibility criteria.
What is being tested
Nitrous oxide 10% & placebo
+ Nitrous oxide 20% & placebo
+ Nitrous oxide 30% & placebo
Drug
Who is being recruted
Opioid-Related Disorders
+ Substance-Related Disorders
From 21 to 32 Years
See all eligibility criteria
How is the trial designed
Other Study
Interventional
Study Start: April 1996
See protocol details
Summary
Principal SponsorUniversity of Chicago
Last updated: May 28, 2015
Sourced from a government-validated database.Claim as a partner
Study start date: April 1, 1996Actual date on which the first participant was enrolled.
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.
Principal SponsorUniversity of Chicago
Last updated: May 28, 2015
Sourced from a government-validated database.Claim as a partner
Protocol
This section provides details of the study plan, including how the study is designed and what the study is measuring.Design Details
22 patients to be enrolledTotal number of participants that the clinical trial aims to recruit.
How participants are assigned to different groups/arms
In this clinical study, participants are placed into groups randomly, like flipping a coin. This ensures that the study is fair and unbiased, making the results more reliable. By assigning participants by chance, researchers can better compare treatments without external influences.
Other Ways to Assign Participants
Non-randomized allocation: Participants are assigned based on specific factors, such as their medical condition or a doctor's decision.
None (Single-arm trial): If the study has only one group, all participants receive the same treatment, and no allocation is needed.
In this clinical study, participants are placed into groups randomly, like flipping a coin. This ensures that the study is fair and unbiased, making the results more reliable. By assigning participants by chance, researchers can better compare treatments without external influences.
Other Ways to Assign Participants
Non-randomized allocation: Participants are assigned based on specific factors, such as their medical condition or a doctor's decision.
None (Single-arm trial): If the study has only one group, all participants receive the same treatment, and no allocation is needed.
How treatments are given to participants
Participants receive different treatments one after the other, switching from one to another during the study. This helps researchers understand how individuals respond to multiple treatments.
Other Ways to Assign Treatments
Single-group assignment: Everyone gets the same treatment.
Parallel assignment: Participants are split into separate groups, each receiving a different treatment.
Factorial assignment: Participants receive different combinations of treatments.
Sequential assignment: Participants receive treatments one after another in a specific order, possibly based on individual responses.
Other assignment: Treatment assignment does not follow a standard or predefined design.
Participants receive different treatments one after the other, switching from one to another during the study. This helps researchers understand how individuals respond to multiple treatments.
Other Ways to Assign Treatments
Single-group assignment: Everyone gets the same treatment.
Parallel assignment: Participants are split into separate groups, each receiving a different treatment.
Factorial assignment: Participants receive different combinations of treatments.
Sequential assignment: Participants receive treatments one after another in a specific order, possibly based on individual responses.
Other assignment: Treatment assignment does not follow a standard or predefined design.
How the interventions assigned to participants is kept confidential
Neither participants nor researchers know who is receiving which treatment. This is the most rigorous way to reduce bias, ensuring that expectations do not influence the results.
Other Ways to Mask Information
Open-label: Everyone knows which treatment is being given.
Single-blind: Participants do not know which treatment they are receiving, but researchers do.
Triple-blind: Participants, researchers, and outcome assessors do not know which treatment is given.
Quadruple-blind: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.
Neither participants nor researchers know who is receiving which treatment. This is the most rigorous way to reduce bias, ensuring that expectations do not influence the results.
Other Ways to Mask Information
Open-label: Everyone knows which treatment is being given.
Single-blind: Participants do not know which treatment they are receiving, but researchers do.
Triple-blind: Participants, researchers, and outcome assessors do not know which treatment is given.
Quadruple-blind: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.
Eligibility
Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.Conditions
Criteria
Any sexBiological sex of participants that are eligible to enroll.
From 21 to 32 YearsRange of ages for which participants are eligible to join.
Healthy volunteers allowedIf individuals who are healthy and do not have the condition being studied can participate.
Conditions
Pathology
Opioid-Related Disorders
Substance-Related Disorders
Criteria
Ensure optimum compatibilityAdd your profile to know your probability eligibility score.
Study Plan
Find out more about all the medication administered in this study, their detailed description and what they involve.Treatment Groups
Study Objectives
2 intervention groups
are designated in this study
This study does not include a placebo group
Treatment Groups
Group I
Active Comparator
Group inhaled placebo and varying doses of nitrous oxide in pairs then chose which they wanted for a third inhalation.
Group II
Active Comparator
Group and technician were blinded as to which gas they were inhaling in pairs with third inhalation subject's choice.
Study Objectives
Primary Objectives
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.
Study Centers
These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.This study has 1 location
Suspended
CompletedOne Study Center