NCT05483881

Brief Summary

The investigators expect to reveal the association between air pollution and childhood respiratory diseases through a multi-center observational study, and summarize the relationship between air pollution and childhood respiratory diseases.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
2,000,000

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started May 2022

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

January 14, 2022

Completed
4 months until next milestone

Study Start

First participant enrolled

May 15, 2022

Completed
3 months until next milestone

First Posted

Study publicly available on registry

August 2, 2022

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2022

Completed
Last Updated

August 2, 2022

Status Verified

July 1, 2022

Enrollment Period

8 months

First QC Date

January 14, 2022

Last Update Submit

July 29, 2022

Conditions

Respiratory Disease

Keywords

Respiratory Diseaseschildrenair pollution

Outcome Measures

Primary Outcomes (1)

  • Major air pollutant concentrations

    The air pollutant data comes from the daily air quality data published by the National Environmental Monitoring Center. Calculate the arithmetic average of the daily average concentrations of air pollutants (PM10, PM2.5, SO, NO, CO, etc.) Converted from air pollution index (API).

    12 years

Secondary Outcomes (1)

  • Number of daily visits for respiratory diseases in outpatient and emergency departments

    12 years

Eligibility Criteria

Age1 Day - 18 Years
Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64)
Sampling MethodNon-Probability Sample
Study Population

All children aged between 0-18 years who visited Beijing Children's hospital or other hospitals participating in the project due to respiratory diseases from 2010 to 2021.

You may qualify if:

  • All children participating in this clinical study must meet all of the following criteria:
  • Age: 0-18 years old, male and female
  • Consultation for respiratory diseases
  • Visit time is between 2010-2021
  • Provide complete personally identifiable information and medical information

You may not qualify if:

  • All children with any of the following conditions must be excluded from this study:
  • children who visit hospital don't for respiratory diseases
  • children participating in this clinical study don't provide complete personally identifiable information and medical information
  • Visit time is not between 2010-2021.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Baoping Xu

Beijing, Beijing Municipality, 100045, China

RECRUITING

MeSH Terms

Conditions

Respiration DisordersRespiratory Tract Diseases

Central Study Contacts

Baoping Xu, MD,PhD

CONTACT

861059616308xubaopingbch@163.com

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
RETROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Chief of Respiratory Department Affiliation: Beijing Children's Hospital

Study Record Dates

First Submitted

January 14, 2022

First Posted

August 2, 2022

Study Start

May 15, 2022

Primary Completion

December 31, 2022

Study Completion

December 31, 2022

Last Updated

August 2, 2022

Record last verified: 2022-07

Locations

CN(1)