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Development of a Qualitative Exposure Assessment Tool for Individuals Exposed to Respirable Crystalline Silica

Development of a Qualitative Exposure Assessment Tool for Individuals Exposed to Respirable Crystalline Silica

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
TCTR
Registry ID
TCTR20260510005
Enrollment
43
Registered
2026-05-10
Start date
2026-06-01
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

Respirable Crystalline Silica Exposure Occupational Exposure

Interventions

Workers with an estimated respirable crystalline silica exposure level at or above 0.05 mg per cubic meter.,Workers with an estimated respirable crystalline silica exposure level between 0.025 and 0.0
Screening,Screening,Screening
High Exposure Group,Moderate Exposure Group,Low Exposure Group

Sponsors

Khon Kaen University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 60 Years

Inclusion criteria

Inclusion criteria: 1. Individuals aged 18 to 60 years. 2. Workers engaged in stone related tasks in Sikhio District, Nakhon Ratchasima Province. 3. Participants must have at least six months of experience in their current task. 4. Participants must provide written informed consent before participating in the study.

Exclusion criteria

Exclusion criteria: 1. Individuals who are unable to provide informed consent. 2. Individuals with incomplete work history or exposure data that cannot be verified.

Design outcomes

Primary

MeasureTime frame
Agreement of silica exposure classification Approximately 1 month after study commencement Percentage of agreement and Cohen's Kappa statistic comparing the developed tool's risk levels (low, medium, high) against the reference evaluation standard.

Secondary

MeasureTime frame
Content validity of the qualitative exposure assessment tool Approximately 1 month Content Validity Index (CVI) or Index of Item Objective Congruence (IOC) evaluated by a panel of occupational health experts.

Countries

Thailand

Contacts

Public ContactTanapol Watthanatham

Khon Kaen University

tanapol.wa@kkumail.com0957318833

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 10, 2026