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

CHU Brugmann University Hospital

Status: Completed

Conditions: Chronic Respiratory Diseases

Treatments: Other: Questionnaire; Device: Lung function test

Study type: Interventional

Funder types: Other

Identifiers

NCT02898129

CHUB-CRD-Housing

Details and patient eligibility

About

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

Enrollment: 1,500 patients

Sex: All

Ages: 10 to 65 years old

Volunteers: Accepts Healthy Volunteers

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)

Trial design

Primary purpose: Screening

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

---

1,500 participants in 4 patient groups

Tube houses

Experimental group

Description:

Tube Houses. Group of 75-100 houses, with 4 inhabitants per house. Expected number of participants: 300-400. Predicted number of non-smoker chronic respiratory disease of 18-24.

Treatment:

Other: Questionnaire

Device: Lung function test

Apartment

Experimental group

Description:

Apartments. Group of 75-100 apartments, with 4 inhabitants per apartment. Expected number of participants: 300-400. Predicted number of non-smoker chronic respiratory disease of 18-24.

Treatment:

Other: Questionnaire

Device: Lung function test

Rental Houses

Experimental group

Description:

Rental Houses. Group of 150-200 rental houses, with 2 inhabitants per rental house. Expected number of participants: 300-400. Predicted number of non-smoker chronic respiratory disease of 18-24.

Treatment:

Other: Questionnaire

Device: Lung function test

Rural houses

Experimental group

Description:

Rural Houses. Group of 40-60 rural houses, with 5 inhabitant per rural house. Expected number of participants: 200-300. Predicted number of non-smoker chronic respiratory disease of 12-18.

Treatment:

Other: Questionnaire

Device: Lung function test