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Completed

NCT Number: NCT02898129

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

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

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Key information

Conditions

Chronic Respiratory Diseases

Age range

10 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Pham Ngoc Thach University of medicine

Ho Chi Minh City, 7000, Vietnam

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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)

Treatment and study plan

Questionnaire

Other

Lung function test

Device

Basic lung function test performed with a micro-spirometer, without broncho dilatator

Primary outcomes

  1. FEV1/FVC

    Time frame: 5 minutes

    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.

  2. FVC

    Time frame: 5 minutes

    Basic lung function test, without broncho dilatation (micro-spirometer). All lung function related outcomes are performed during the same test.FVC: Forced vital capacity.

  3. VC

    Time frame: 5 minutes

    Basic lung function test, without broncho dilatation (micro-spirometer). All lung function related outcomes performed during the same test. VC: Vital capacity

  4. FEF 25-75%

    Time frame: 5 minutes

    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. Socio-demographic status

    Time frame: around 10 minutes

    Socio-demographic data, assessed by a home made questionnaire

  6. Health status

    Time frame: around 10 minutes

    Health status (symptomatology) data, assessed by a home made questionnaire

  7. Indoor air exposure time

    Time frame: around 10 minutes

    Indoor air exposure (time spent indoor within housing types, with associated air characteristics) data, assessed by a home made questionnaire

Sponsors and collaborators

Lead sponsor

Brugmann University Hospital

Other

Registry information

Important dates

Study start
2016
Primary completion
2017
Study completion
2017
First posted
Sep 13, 2016
Registry last updated
Aug 4, 2017

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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