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CompletedNCT03738202MultiTex-RCTUpdated Aug 4, 2023

Multifaceted Intervention for Protection Against Cotton Dust Exposure Among Textile Workers

An interventional study of Multifaceted intervention package in Occupational Diseases and Occupational Lung Disease, sponsored by Aga Khan University. Completed at 1 site in Pakistan. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-08-04.

Sponsored by Aga Khan University · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
2,031
Allocation
Randomized
Ages
18 Years and older
Sex
Male
01

Study summary

Textile workers are exposed to various harmful substances during work, including cotton dust, which is the dust present in air during the handling or processing of cotton. Previous research found a link between cotton dust exposure and impaired respiratory health. This study will comprise of administration and workers' training regarding preventive measures for protection against respiratory illnesses. Workers will be provided free, disposable face masks and measures to reduce cotton dust exposure will be introduced at the textile mills. The study would then determine the effectiveness of this intervention on reduction in cotton dust levels in the mills, and improvement in respiratory health of workers. This study would help the cotton textile workers and managers reduce the health hazards of cotton dust exposure and also guide researchers from Pakistan and other low-resource countries towards developing relevant strategies for health protection of these workers.

Read the detailed description

The textile, clothing and footwear sector provides employment to more than 60 million people worldwide, mostly in developing countries. Pakistan's textile industry accounts for 8.5% of the national GDP and employs around 40% of the industrial workforce. High burden of respiratory illnesses, including byssinosis and lung function decrements has been reported among cotton textile workers in developing countries and previous work undertaken by Dr Nafees found a high burden in Pakistan. Dr Nafees recently implemented an interventional study designed to improve workers' knowledge, attitude and practices and respiratory health, and reduce dust exposure at cotton textile mills through a multifaceted intervention (MultiTex pilot study). The preliminary findings from the pilot were helpful in improving the overall design and implementation of a larger and more definitive study (cluster randomised controlled trial). The aim of the trial would be to determine the effectiveness of a multifaceted interventional package for improvement in reducing dust levels at the cotton textile mills as well as improvement in respiratory health of textile workers.This study will add important context-specific knowledge regarding preventive strategies in cotton mills with policy implications for Pakistan and other developing countries.

02

Conditions studied

  • Occupational Diseases
  • Occupational Lung Disease

Keywords

  • Randomized controlled trial
  • Textile industry
  • Cotton fiber
  • Byssinosis
03

In context

Lung Diseases

3,303 studies on the registry are indexed under Lung Diseases; 355 are open to participants now.

This study's enrollment of 2,031 is above the median of 72 across 2,118 interventional studies indexed under Lung Diseases.

Browse Lung Diseases studies →

Lead sponsor

Aga Khan University is the lead sponsor of 290 studies on the registry; 44 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No

Eligibility criteria

Inclusion Criteria:

  • Inclusion criteria for textile mills:
  • Mills from the formal sector will be included.
  • Mills which have either spinning or weaving sections, or both.
  • Mills that have at least 50-100 workers (primarily labourers/machine operators) in the spinning and weaving sections.
  • Mills with a more stable working population will be preferred.
  • Willingness of management to participate in planning and implementation of the study.
  • Inclusion criteria for textile workers:
  • Those ≥18 years and employed in the bale opening, blowing, carding, spinning, weaving and waste recycling sections (and related sub-sections).

Exclusion Criteria:

  • Textile workers from the wet-processing areas as well as support or administrative staff will be excluded.
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Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
2,031 participants (actual)

Study arms

  • Experimental
    Intervention

    Multifaceted intervention package will be implemented at textile mills in the intervention arm.

    Behavioral: Multifaceted intervention package

  • No intervention
    Control

    No intervention will be provided to mills in the control arm.

Interventions

  • BehavioralMultifaceted intervention package

    Multifaceted intervention package will comprise following strategies: 1. Initial training for all workers and managers on occupational health and safety (OHS) 2. Follow-up refresher sessions every three months 3. Formation of workplace committees (including worker representatives) to draw up, agree and promote a health and safety plan that includes wet mopping, safe disposal of cotton dust, and the use of simple face masks, as well as further publicity about the risks from cotton dust. 4. Provision of adequate supplies of face masks to support the health and safety plan

06

What researchers measure

Primary outcomes

  1. Changes in cotton dust personal exposure levels expressed as mg/m3

    Will be assessed through the use of IOM samplers

    Time frame: 24 months

  2. Changes in the prevalence of respiratory symptoms

    Will be assessed through MRC respiratory questionnaire; symptoms include chest tightness, cough, phlegm, chronic bronchitis, wheezing and shortness of breath.

    Time frame: 24 months

  3. Changes in Forced Expiratory Volume in first second (FEV1) measured in in ml

    Will be assessed through spirometry

    Time frame: 24 months

07

Study locations

1 site
  • Aga Khan University
    Karachi, Pakistan
08

References and documents

Publications

  • Nafees AA, De Matteis S, Kadir MM, Burney P, Coggon D, Semple S, Cullinan P. MultiTex RCT - a multifaceted intervention package for protection against cotton dust exposure among textile workers - a cluster randomized controlled trial in Pakistan: study protocol. Trials. 2019 Dec 16;20(1):722. doi: 10.1186/s13063-019-3743-3. PubMed 31842937 ↗
  • Nafees AA, Matteis S, Burney P, Cullinan P. Contemporary Prevalence of Byssinosis in Low- and Middle-Income Countries: A Systematic Review. Asia Pac J Public Health. 2022 Jul;34(5):483-492. doi: 10.1177/10105395211073051. Epub 2022 Jan 24. PubMed 35073782 ↗
  • Nafees AA, Iqbal AR, Cullinan P, De Matteis S, Burney P, Semple S. Use of Low-Cost Particle Counters for Cotton Dust Exposure Assessment in Textile Mills in Low- and Middle-Income Countries. Ann Work Expo Health. 2022 Apr 22;66(4):537-542. doi: 10.1093/annweh/wxab102. PubMed 34791042 ↗
  • Nafees AA, Muneer MZ, De Matteis S, Amaral A, Burney P, Cullinan P. Impact of using different predictive equations on the prevalence of chronic byssinosis in textile workers in Pakistan. Occup Environ Med. 2022 Apr;79(4):242-244. doi: 10.1136/oemed-2021-107680. Epub 2021 Nov 19. PubMed 34799440 ↗
  • Nafees AA, Muneer MZ, Irfan M, Kadir MM, Semple S, De Matteis S, Burney P, Cullinan P. Byssinosis and lung health among cotton textile workers: baseline findings of the MultiTex trial in Karachi, Pakistan. Occup Environ Med. 2023 Mar;80(3):129-136. doi: 10.1136/oemed-2022-108533. Epub 2023 Jan 30. PubMed 36717255 ↗

Individual participant data

Plan to share: No — This may be possible at the conclusion of the study and would depend on the guidelines of the funding agency and the publishing journal(s).

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 4, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03738202
Lead sponsor
Aga Khan University
Collaborators
Wellcome Trust, Imperial College London
Responsible party
Asaad Ahmed Nafees (Assistant Professor, Aga Khan University) — Principal investigator
First posted
Nov 13, 2018
Start date
Jun 15, 2019
Primary completion
Jul 15, 2022
Completion
Jul 15, 2022
Last update
Aug 4, 2023

Study contacts

Asaad A Nafees
principal investigator · Aga Khan University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2023. You cannot join it, but the record below documents what was studied.

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