Evaluating the Relationship Between Environmental Risk Factors in Housing Types and Chronic Respiratory Diseases in Ho Chi Minh City

Chronic Respiratory Diseases Clinical Trial

Official title:

Evaluating the Relationship Between Environmental Risk Factors in Housing Types and Chronic Respiratory Diseases in Ho Chi Minh City

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02898129
• Other study ID #: CHUB-CRD-Housing
• Status: Completed
• Phase: N/A
• First received: September 8, 2016
• Last updated: August 3, 2017
• Start date: September 2016
• Est. completion date: July 2017

Study information

• Verified date: August 2017
• Source: Brugmann University Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The research question is "Are the different types of house in Ho Chi Minh city equally contributing to chronic respiratory diseases?".

According to this question, a cross-sectional and explorative study was set up to explore the differences in the environmental characteristics and prevalence of chronic respiratory diseases among common housing types in Ho Chi Minh city. Preliminary work was performed in 100 houses (20 houses per type, included tube houses, rental houses, rural houses, slum and apartment) from November 2013 to June 2015. It included measures by environmental devices, questionnaires and indoor activities diaries.

This study will aim to collect information about the prevalence of chronic respiratory diseases (CRDs) inside those house types to understand more about role of house types in developing CRDs.

The objective is:

1. to evaluate the relationships between the type of house and lung function of inhabitants in each housing type.

2. to evaluate the effects of environmental risk factors in each house type on prevalence of CRDs

Recruitment information / eligibility

• Status: Completed
• Enrollment: 1500
• Est. completion date: July 2017
• Est. primary completion date: July 2017
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 10 Years to 65 Years

Eligibility

Inclusion Criteria:

• Everybody

Exclusion Criteria:

• Not able to answer the questionnaire or give informed consent

• Have a contra-indication for lung function test (acute myocardial infarction less that 1 month ago, pain related to spirometry, dementia/confused)

Related Conditions & MeSH terms

• Chronic Respiratory Diseases
• Respiration Disorders
• Respiratory Tract Diseases

Intervention

Other:
• Questionnaire

Device:
• Lung function test
Basic lung function test performed with a micro-spirometer, without broncho dilatator

Locations

Country	Name	City	State
Vietnam	Pham Ngoc Thach University of medicine	Ho Chi Minh City

Sponsors (1)

Lead Sponsor	Collaborator
Brugmann University Hospital

Country where clinical trial is conducted

Vietnam, 

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* Note: There are 35 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	FEV1/FVC	Basic lung function test, without broncho dilatation (micro-spirometer). All lung function related outcomes are performed during the same test. FEV1: forced expiratory volume in one second. FVC: Forced vital capacity.	5 minutes
Primary	FVC	Basic lung function test, without broncho dilatation (micro-spirometer). All lung function related outcomes are performed during the same test.FVC: Forced vital capacity.	5 minutes
Primary	VC	Basic lung function test, without broncho dilatation (micro-spirometer). All lung function related outcomes performed during the same test. VC: Vital capacity	5 minutes
Primary	FEF 25-75%	Basic lung function test, without broncho dilatation (micro-spirometer).All lung function related outcomes are performed during the same test. FEF: Forced expiratory flow	5 minutes
Primary	Socio-demographic status	Socio-demographic data, assessed by a home made questionnaire	around 10 minutes
Primary	Health status	Health status (symptomatology) data, assessed by a home made questionnaire	around 10 minutes
Primary	Indoor air exposure time	Indoor air exposure (time spent indoor within housing types, with associated air characteristics) data, assessed by a home made questionnaire	around 10 minutes