AsthmaNCT00041834
Geographic Modeling of Traffic and Asthma Rates
An observational study of Asthma, run by National Institute of Environmental Health Sciences (NIEHS).
Trial summary
This study surveys the parents/guardians about symptoms and diagnosis of asthma in kindergarten and first-grade students in 13 schools around the city of Anchorage, Alaska. Traffic information is also measured and entered in geographical information mapping system with student's home and school locations. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Asthma
- How many people
- Not given
- Where
- No sites listed yet
- Study dates
- Sep 2000to Aug 2003
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- Child, Adult, Older adult
About this study
This study surveys the parents/guardians about symptoms and diagnosis of asthma in kindergarten and first-grade students in 13 schools around the city of Anchorage, Alaska. Traffic information is also measured and entered in geographical information mapping system with student's home and school locations. The study will assess whether students living in high traffic areas have greater risk of diagnosis of asthma.
Read the detailed description
Survey was distributed through the schools. Parents/guardians were asked about indoor exposures such as environmental tobacco smoke, insects, mold, woodstoves, as well as demographic information about the child and housing type, income,also biologic information about parental asthma. Questions included symptoms of respiratory illness as well as wheezing and medication use. Civil engineering department measured traffic on local roadways and gathered traffic information from state and municipal sources regarding traffic on arterioles and major traffic arteries. All information was entered into geographical information system (GIS) including the closest cross-streets to the child's home and the school location. Traffic exposure variables are being developed for each child and will be added to the database on indoor exposures. A regression model will be used to determine the significance of traffic exposure in receiving a diagnosis of asthma for children five to seven years of age.
- Conditions
- Asthma
- Keywords
- childhood asthma, traffic
- Medical subject headings
- Asthma
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Jul 2002 (estimated)
- Study startSep 2000
- Study completionAug 2003
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for AsthmaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Defined population
- Time perspective
- Other
Sponsor and investigators
- Lead sponsor
- National Institute of Environmental Health Sciences (NIEHS)
- Sponsor type
- US National Institutes of Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00041834
- Sponsor's protocol ID
- 10100-CP-001
- Status last verified
- Jul 2002
- First submitted
- 18 Jul 2002
- Last updated
- 24 Jun 2005
- Results posted
- No
Study at a glance
From the registry record, last updated by the sponsor on 24 Jun 2005. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Geographic Modeling of Traffic and Asthma Rates
- ClinicalTrials.gov ID
- NCT00041834
- Acronym / sponsor ID
- 10100-CP-001
- Conditions
- Asthma
- Keywords
- childhood asthma, traffic
- Study type
- Observational
- Recruitment status
- Completed
- Lead sponsor
- National Institute of Environmental Health Sciences (NIEHS)US National Institutes of Health
- Study start
- Sep 2000
- Study completion
- Aug 2003
- First posted
- 22 Jul 2002 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study surveys the parents/guardians about symptoms and diagnosis of asthma in kindergarten and first-grade students in 13 schools around the city of Anchorage, Alaska. Traffic information is also measured and entered in geographical information mapping system with student's home and school locations. The study will assess whether students living in high traffic areas have greater risk of diagnosis of asthma.
Detailed description
Survey was distributed through the schools. Parents/guardians were asked about indoor exposures such as environmental tobacco smoke, insects, mold, woodstoves, as well as demographic information about the child and housing type, income,also biologic information about parental asthma. Questions included symptoms of respiratory illness as well as wheezing and medication use. Civil engineering department measured traffic on local roadways and gathered traffic information from state and municipal sources regarding traffic on arterioles and major traffic arteries. All information was entered into geographical information system (GIS) including the closest cross-streets to the child's home and the school location. Traffic exposure variables are being developed for each child and will be added to the database on indoor exposures. A regression model will be used to determine the significance of traffic exposure in receiving a diagnosis of asthma for children five to seven years of age.
Study design
- Observational model
- Defined population
- Time perspective
- Other
Who may qualify
- Age groups
- Child, Adult, Older adult
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Jun 2005.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
An observational study of Asthma, run by National Institute of Environmental Health Sciences (NIEHS).
The full registered description is in the About this study section and the official record.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 24 Jun 2005. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Jun 2005.