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

NCT07383896 | Recruiting

• 1 other identifier: MTU-EC-IM-1-024/68
• Study Type: observational
• Target: 310
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

Asthma; COPD

Keywords

asthma; COPD; pulmonary function; worker; industry; Thailand

Outcome Measures

Primary Outcomes (2)

• Prevalence of asthma among workers at the Navanakorn Industrial Zone

  Prevalence rate of asthma among workers in the Navanakorn Industrial Zone

  Baseline

• Prevalence of COPD among workers in the Navanakorn Industrial Zone

  Prevalence rate of COPD among workers in the Navanakorn Industrial Zone

  Baseline

Secondary Outcomes (1)

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

  Baseline

Study Arms (1)

Workers

Workers aged 18 years or older at Navanakorn industrial zone, Thailand

Diagnostic Test: Pulmonary function test

Interventions

Pulmonary function test DIAGNOSTIC_TEST

Spirometry with bronchondilator test will be performed.

Workers

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Subjects aged 18 years or older who work or live in the Navanakorn Industrial Zone, Thailand.

You may qualify if:

• Age 18 years or older

You may not qualify if:

• Inability to perform spirometry

Sponsors & Collaborators

• Thammasat University: lead

Study Sites (1)

Faculty of Medicine, Thammasat University

Pathum Thani, Changwat Pathum Thani, 12120, Thailand

RECRUITING

Related Publications (11)

• Vested A, Kolstad HA, Basinas I, Burdorf A, Elholm G, Heederik D, Jacobsen GH, Kromhout H, Omland O, Schaumburg I, Sigsgaard T, Vestergaard JM, Wouters IM, Schlunssen V. Dust exposure and the impact on hospital readmission of farming and wood industry workers for asthma and chronic obstructive pulmonary disease (COPD). Scand J Work Environ Health. 2021 Mar 1;47(2):163-168. doi: 10.5271/sjweh.3926. Epub 2020 Oct 19.

  PMID: 33073852 RESULT

• Garg R, Matreja PS, Maqusood M. Analysis of lung function and respiratory symptoms in brass/metal industrial workers of Moradabad, Uttar Pradesh, India. Ann Afr Med. 2023 Apr-Jun;22(2):219-223. doi: 10.4103/aam.aam_24_22.

  PMID: 37026203 RESULT

• Bansal N, Lanjewar A, Acharya S, Shukla S. Assessment of pulmonary function test in brick factory workers. J Family Med Prim Care. 2022 Nov;11(11):6916-6919. doi: 10.4103/jfmpc.jfmpc_504_22. Epub 2022 Dec 16.

  PMID: 36993005 RESULT

• Rafeemanesh E, Alizadeh A, Afshari Saleh L, Zakeri H. A study on respiratory problems and pulmonary function indexes among cement industry workers in Mashhad, Iran. Med Pr. 2015;66(4):471-7. doi: 10.13075/mp.5893.00115.

  PMID: 26536964 RESULT

• Nasri SM, Putri FA, Sunarno S, Fauzia S, Ramdhan DH. PM2.5 exposure and lung function impairment among fiber-cement industry workers. J Public Health Res. 2023 Jan 13;12(1):22799036221148989. doi: 10.1177/22799036221148989. eCollection 2023 Jan.

  PMID: 36654813 RESULT

• Elshaer N, Foda N, Shehata S. Respiratory symptoms and pulmonary function impairment among textile industry workers in Alexandria, Egypt. J Public Health Afr. 2023 Oct 1;14(10):2741. doi: 10.4081/jphia.2023.2741. eCollection 2023 Oct 31.

  PMID: 38020280 RESULT

• Papageorgiou CV, Savourdos P, Douna E, Georgakopoulou VE, Makrodimitri S, Dounias G. Respiratory Symptoms and Pulmonary Function of Workers in the Waste Management Industry. Cureus. 2021 Aug 9;13(8):e17027. doi: 10.7759/cureus.17027. eCollection 2021 Aug.

  PMID: 34522508 RESULT

• Cox-Ganser JM, White SK, Fedan KB, Bailey RL, Fechter-Leggett E, Cummings KJ. Spirometric Abnormalities and Lung Function Decline in Current and Former Microwave Popcorn and Current Flavoring Manufacturing Workers. J Occup Environ Med. 2020 Jun;62(6):412-419. doi: 10.1097/JOM.0000000000001860.

  PMID: 32510907 RESULT

• Boonsawat W, Charoenphan P, Kiatboonsri S, Wongtim S, Viriyachaiyo V, Pothirat C, Thanomsieng N. Survey of asthma control in Thailand. Respirology. 2004 Aug;9(3):373-8. doi: 10.1111/j.1440-1843.2004.00584.x.

  PMID: 15363011 RESULT

• Saiphoklang N, Ruchiwit P, Kanitsap A, Tantiyavarong P, Vatcharavongvan P, Palungrit S, Leelasittikul K, Pugongchai A, Poachanukoon O. Prevalence of Chronic Obstructive Pulmonary Disease and Asthma in the Community of Pathumthani, Thailand. Diseases. 2025 Apr 23;13(5):130. doi: 10.3390/diseases13050130.

  PMID: 40422562 RESULT

• Saiphoklang N, Ruchiwit P, Kanitsap A, Tantiyavarong P, Vatcharavongvan P, Palungrit S, Leelasittikul K, Pugongchai A, Poachanukoon O. Silicosis and Pulmonary Functions Among Residents Exposed to Dust in Saraburi Thailand. Diseases. 2025 Nov 13;13(11):372. doi: 10.3390/diseases13110372.

  PMID: 41294912 RESULT

MeSH Terms

Conditions

Asthma; Pulmonary Disease, Chronic Obstructive

Interventions

Respiratory Function Tests

Condition Hierarchy (Ancestors)

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

Intervention Hierarchy (Ancestors)

Diagnostic Techniques, Respiratory System; Diagnostic Techniques and Procedures; Diagnosis

Study Officials

• Narongkorn Saiphoklang, MD

  Thammasat University Faculty of Medicine

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Narongkorn Saiphoklang, MD

CONTACT

+6629269794; M_narongkorn@hotmail.com

Apiwat Pugongchai, MSc

CONTACT

+6629269142; pu.apiwat@gmail.com

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Associate Professor

Study Record Dates

• First Submitted: January 18, 2026
• First Posted: February 3, 2026
• Study Start: September 1, 2025
• Primary Completion: March 31, 2026
• Study Completion (Estimated): May 31, 2026
• Last Updated: April 17, 2026

Record last verified: 2026-04

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, SAP
• Time Frame: IPD and documents will be available for sharing immediately after publication for a period of 2 years.

Locations

TH (1)