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NCT00041821 · ClinicalTrials.gov registry record · NA
Nasal Irritation Study: Individual Factors in Nasal Irritant Sensitivity
A NA study, sponsored by National Institute of Environmental Health Sciences (NIEHS).
- Completed
- Registry status
- NA
- Development phase
- 64
- Enrollment target
NCT00041821: Completed NA study, sponsored by National Institute of Environmental Health Sciences (NIEHS).
NCT00041821 is a NA study that has completed, run by National Institute of Environmental Health Sciences (NIEHS). The registered enrollment target is 64 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (95% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00041821, a NA study, has completed, sponsored by National Institute of Environmental Health Sciences (NIEHS).
- COMPLETED
- Registry status
- NA
- Development phase
- 64 participants
- Enrollment target
Study Summary
This study seeks to document differences in nasal irritant sensitivity within the population. The investigators are interested in knowing whether age, gender, and allergy status (nasal allergies) predict nasal irritant sensitivity. This is important in understanding symptom reporting patterns in air pollution situations (particularly in so-called "problem buildings"), as well as in understanding the reflex mechanism of a response of the nose to irritants (e.g., nasal congestion).
Interventions
- PROCEDURE Nasal irritation thresholds and irritant provocation
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 64 participants |
| Start Date | 2000-09 |
| Phase | NA |
What the finished NCT00041821 record still lists
NCT00041821 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 64 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (95% lower).
The record links to 0 conditions, and to 1 intervention - of which Nasal irritation thresholds and irritant provocation is the first listed.
NCT00041821 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00041821 about?
NCT00041821 is a clinical study titled "Nasal Irritation Study: Individual Factors in Nasal Irritant Sensitivity". This study seeks to document differences in nasal irritant sensitivity within the population. The investigators are interested in knowing whether age, gender, and allergy status (nasal allergies) predict nasal irritant sensitivity. This is important in understanding symptom reporting patterns in air...
What is the current status of trial NCT00041821?
This trial is currently completed. It is a NA study. The enrollment target is 64 participants. The study started on 2000-09.
What interventions are being tested in trial NCT00041821?
The interventions under investigation include: Nasal irritation thresholds and irritant provocation (PROCEDURE).
Who is sponsoring clinical trial NCT00041821?
This trial is sponsored by National Institute of Environmental Health Sciences (NIEHS), which has 145 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00041821's enrollment target sits among peer trials
64 1147th of 2000 higher than 844 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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