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NCT00891189 · ClinicalTrials.gov registry record
Determine the Relationship Between Circadian Rhythms and Nocturnal Asthma
A clinical trial of Asthma, sponsored by Northwestern University.
- Completed
- Registry status
- 20
- Enrollment target
- 1
- Study location
NCT00891189: Completed study of Asthma, sponsored by Northwestern University.
NCT00891189 is a study of Asthma that has completed, run by Northwestern University. The registered enrollment target is 20 participants, below the 1,563-participant average among 374 other Asthma trials with a reported enrollment target (99% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00891189, a study of Asthma, has completed, sponsored by Northwestern University.
- COMPLETED
- Registry status
- 20 participants
- Enrollment target
- 1
- Study location
Study Summary
Asthma is a disease that affects the lungs. Symptoms include repeated episodes of wheezing, breathlessness, chest tightness, and nighttime or early morning coughing. Some people with asthma experience worse symptoms at night, which is known as nocturnal asthma (NA). The reason for the decline in lung function at night in some asthmatics is not well understood, but it may be linked to the human biological clock, which controls daily activity and sleep rhythms. To determine whether differences in biological clocks relate to worsening nocturnal lung function, this study will evaluate the circadian rhythms of people with NA, people with non-nocturnal asthma, and healthy people.
Conditions Studied
Study Locations (1)
Illinois
- Northwestern University - Chicago
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 20 participants |
| Start Date | 2009-01 |
| Est. Completion | 2011-12 |
What the finished NCT00891189 record still lists
NCT00891189 is an observational study that tracks outcomes without assigning an intervention. The registry caps enrollment at 20 participants, a relatively small participant target, below the 1,563-participant average among 374 other Asthma trials with a reported enrollment target (99% lower).
The record links to 1 condition, with Asthma appearing as the primary indexed condition, and to 0 interventions.
NCT00891189 reports a single indexed study location in Illinois.
Frequently Asked Questions
What is clinical trial NCT00891189 about?
NCT00891189 is a clinical study titled "Determine the Relationship Between Circadian Rhythms and Nocturnal Asthma". Asthma is a disease that affects the lungs. Symptoms include repeated episodes of wheezing, breathlessness, chest tightness, and nighttime or early morning coughing. Some people with asthma experience worse symptoms at night, which is known as nocturnal asthma (NA). The reason for the decline in lun...
What is the current status of trial NCT00891189?
This trial is currently completed. The enrollment target is 20 participants. The study started on 2009-01. Estimated completion is 2011-12.
What conditions does trial NCT00891189 study?
This clinical trial studies the following conditions: Asthma.
Who is sponsoring clinical trial NCT00891189?
This trial is sponsored by Northwestern University, which has 1,209 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT00891189 being conducted?
This trial has 1 study location across Illinois. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
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Where NCT00891189's enrollment target sits among peer trials
20 338th of 374 higher than 30 of 374 other Asthma trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Asthma 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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