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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:
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Tube houses | Experimental | 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. |
|
| Apartment | Experimental | 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. |
|
| Rental Houses | Experimental | 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. |
|
| Rural houses | Experimental | 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. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Questionnaire | Other |
| ||
| Lung function test |
| Measure | Description | Time Frame |
|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| Socio-demographic status | Socio-demographic data, assessed by a home made questionnaire | around 10 minutes |
| Health status | Health status (symptomatology) data, assessed by a home made questionnaire | around 10 minutes |
| Indoor air exposure time | Indoor air exposure (time spent indoor within housing types, with associated air characteristics) data, assessed by a home made questionnaire |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Pham Ngoc Thach University of medicine | Ho Chi Minh City | 7000 | Vietnam |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 16264058 | Background | Pellegrino R, Viegi G, Brusasco V, Crapo RO, Burgos F, Casaburi R, Coates A, van der Grinten CP, Gustafsson P, Hankinson J, Jensen R, Johnson DC, MacIntyre N, McKay R, Miller MR, Navajas D, Pedersen OF, Wanger J. Interpretative strategies for lung function tests. Eur Respir J. 2005 Nov;26(5):948-68. doi: 10.1183/09031936.05.00035205. No abstract available. | |
| 1952453 |
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| ID | Term |
|---|---|
| D011795 | Surveys and Questionnaires |
| D012129 | Respiratory Function Tests |
| ID | Term |
|---|---|
| D003625 | Data Collection |
| D004812 | Epidemiologic Methods |
| D008919 | Investigative Techniques |
| D017531 | Health Care Evaluation Mechanisms |
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| Device |
Basic lung function test performed with a micro-spirometer, without broncho dilatator |
|
| around 10 minutes |
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| D011787 | Quality of Health Care |
| D017530 | Health Care Quality, Access, and Evaluation |
| D011634 | Public Health |
| D004778 | Environment and Public Health |
| D003948 | Diagnostic Techniques, Respiratory System |
| D019937 | Diagnostic Techniques and Procedures |
| D003933 | Diagnosis |