NCT00013728

Completed

Asthma & Exposure to Peaks in Particulate Air Pollution

National Institute of Environmental Health Sciences (NIEHS)Source

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Other study identifiers

Sponsor study identifier

6214-CP-001

Study Type

observational

Reported enrollment (type unavailable)

24

Locations

0 countries

Sites

N/A

Timeline

Study Start

September 2000

Date type not reported

This date has not been verified as actual or estimated.

Primary Completion

Not reported

Date not reported

Study Completion

October 2003

Date type not reported

This date has not been verified as actual or estimated.

Brief Summary

We are testing the following two hypotheses: 1) Peaks in hourly exposures to airborne particulate matter (PM) of outdoor origin will be more closely associated with acute asthmatic responses to particles than 24-hour average exposures in susceptible individuals; 2) Personal exposure to PM, and estimated particle dose to the lungs, will be more closely associated with daily asthma severity than standard outdoor particle concentrations measured as 24-hour averages at governmental monitoring sites.

Registry Overview

Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.

Recruitment status: completed
Reported enrollment (type unavailable): 24 participants
Study completion date: October 2003
Date type not reported
This date has not been verified as actual or estimated.
Listed locations: 0 countries · 0 sites

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.

Study Start
September 2000
Date type not reported
This date has not been verified as actual or estimated.
First Submitted
March 28, 2001
Actual (reported)
First Posted
March 30, 2001
Actual (reported)
Study Completion
October 2003
Date type not reported
This date has not been verified as actual or estimated.

Last Updated: March 23, 2006
Status Verified: March 2006
Last Update Submitted: March 22, 2006

Conditions

Asthma

Keywords

asthmaparticulate matter

Eligibility Criteria

Age9 Years - 18 Years

Sexall

Healthy VolunteersNo

Age GroupsChild (0-17), Adult (18-64)

1\) physician-diagnosed asthma, at least a 1 yr. history, including episodic symptoms of wheezing, cough and dyspnea; 2) mild to moderate severity of asthma: i) a history of at least several weeks during the warm seasons (Mar-Oct) during which the subject required regular daily use of prescribed prophylactic asthma medications; \& ii) asthma exacerbations at least 2 days/week requiring as-needed bronchodilators during an extended period of 1-2 warm season months; 3) age from 9-18; 4) home, school or work addresses in Alpine, CA area; 5) no history of smoking by the subjects and no person smoking in the subject?s home.

Contact the study team to discuss eligibility requirements. They can help determine if this study is right for you.

Sponsors & Collaborators

National Institute of Environmental Health Sciences (NIEHS)
NIHlead

MeSH Terms

Conditions

Asthma

Condition Hierarchy (Ancestors)

Bronchial DiseasesRespiratory Tract DiseasesLung Diseases, ObstructiveLung DiseasesRespiratory HypersensitivityHypersensitivity, ImmediateHypersensitivityImmune System Diseases

Study Design

Study Type: observational
Observational Model: DEFINED POPULATION
Time Perspective: PROSPECTIVE
Sponsor Type: NIH

Study Record Dates

First Submitted

March 28, 2001

First Posted

March 30, 2001

Study Start

September 2000

Date type not reported

This date has not been verified as actual or estimated.

Study Completion

October 2003

Date type not reported

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Asthma and Allergy Screening AA2000 (Cross Sectional)

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This date has not been verified as actual or estimated.

Last Updated

March 23, 2006

Record last verified: 2006-03

Source record

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Source: ClinicalTrials.gov.

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Registry identifier: NCT00013728
Data provider: ClinicalTrials.gov
Source updated: 2006-03-23
Normalization version: ctgov-legacy-1

Open registry record

Source retrieved: 2026-10-25 22:31:08 UTC

Brief Summary

Registry Overview

Trial Relationships

Related Scientific Literature

Study Timeline

Study Start

First Submitted

First Posted

Study Completion

Conditions

Keywords

Eligibility Criteria

Sponsors & Collaborators

MeSH Terms

Conditions

Condition Hierarchy (Ancestors)

Study Design

Study Record Dates

Source record