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NCT Number: NCT07383896

Chronic Obstructive Pulmonary Disease and Asthma in Workers at Navanakorn Industrial Zone, Thailand

The goal of this observational study is to determine the prevalence of asthma and chronic obstructive pulmonary disease (COPD) among workers in an industrial zone in Thailand.

The main question the study aims to answer is:

What is the prevalence of asthma and COPD among workers in Thailand? Participants will complete a questionnaire on respiratory symptoms and undergo pulmonary function testing.

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Key information

Conditions

Asthma Bronchial Diseases COPD Chronic Disease Disease Attributes Hypersensitivity Hypersensitivity, Immediate Immune System Diseases Lung Diseases Lung Diseases, Obstructive Pathologic Processes Pathological Conditions, Signs and Symptoms Pulmonary Disease, Chronic Obstructive Respiratory Hypersensitivity Respiratory Tract Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

About this study

This study is a cross-sectional study. The study aims to determine the prevalence of asthma and COPD among workers in the Navanakorn Industrial Zone, Thailand. Thai subjects aged 18 years or older are included in the study.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • Age 18 years or older

Exclusion criteria

  • Inability to perform spirometry

Treatment and study plan

Pulmonary Function Test

Diagnostic Test

Spirometry with bronchondilator test will be performed.

Primary outcomes

  1. Prevalence of asthma among workers at the Navanakorn Industrial Zone

    Time frame: Baseline

    Prevalence rate of asthma among workers in the Navanakorn Industrial Zone

  2. Prevalence of COPD among workers in the Navanakorn Industrial Zone

    Time frame: Baseline

    Prevalence rate of COPD among workers in the Navanakorn Industrial Zone

Secondary outcomes

  1. Prevalence of abnormal lung function among workers in the Navanakorn Industrial Zone

    Time frame: Baseline

    Prevalence rate of abnormal lung function among workers in the Navanakorn Industrial Zone

Study contacts

Contact information is provided by the study sponsor or research team.

Apiwat Pugongchai, MSc

CONTACT

[email protected]

+6629269142

Narongkorn Saiphoklang, MD

CONTACT

[email protected]

+6629269794

Sponsors and collaborators

Lead sponsor

Thammasat University

Other

Registry information

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Feb 3, 2026
Registry last updated
Apr 17, 2026

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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