Pulmonary function among rural residents in high air pollution area in northern Thailand: a cross-sectional study

Pulmonary function among rural residents in high air pollution area in northern Thailand

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20211223001

Enrollment

113

Registered

2021-12-23

Start date

2021-12-24

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Abnormal pulmoanry functions Asthma Chronic obstructive pulmonary disease (COPD) Asthma Chronic obstructive pulmonary disease COPD Pulmoanry function

Interventions

Subjects aged 18 years or more who live in high air pollution area in northern Thailand for at least 1 year.

Other

Subjects live in high air pollution area in northern Thailand

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. age 18 years or more, 2. negative for antigen test kit (ATK) for COVID-19 result, 3. live in high air pollution area in northern Thailand for at least 1 year

Exclusion criteria

Exclusion criteria: 1. unstable angina or myocardial infarction, 2. heart rate at rest > 120 beats/minute, 3. blood pressure >180/100 mmHg, 4. stroke or dementia, 5. pregnancy, 6. inability to perform pulmonary function test

Design outcomes

Primary

Measure	Time frame
Low FVC At the beginning of this study Percentage,Low FEV1 At the beginning of this study Percentage,Low FEV1/FVC ratio At the beginning of this study Percentage	—

Secondary

Measure	Time frame
Prevalence of asthma At the beginning of this study Percentage,Prevalence of COPD At the beginning of this study Percentage	—

Countries

Thailand

Contacts

Public ContactNarongkorn Saiphoklang

Thammasat University, Thailand

M_narongkorn@hotmail.com6629269794

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026