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[The evaluation of the exposure of seamstresses to electromagnetic fields, emitted by sewing machines].

Medycyna pracy · 1999 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 5362

EMF measurements around 464 industrial sewing machines in five sewing works indicated exposure to 60 Hz EMF. Thirteen machine types were identified, and analysis of variance suggested that EMF emissions differed substantially by machine type. Machines were gr…

Study snapshot

PublicationMedycyna pracy · 1999
Study typeexposure_assessment
Reported directionUnclear
Evidence ratingInsufficient

Abstract

The authors present the results of the first phase of the studies on the risk of pregnancy complications in semesters and on their work environment with special reference to electromagnetic fields (EMF) emitted by various types of industrial sewing machines. EMF measurements were taken in the surrounding of 464 sewing machines used in five sewing works in the region of Lodź. The results obtained provided evidence that semesters++ working with industrial sewing machines were exposed to EMF of 60 Hz. Thirteen types of machines were identified. Having based on the statistical analysis (analysis of variance) it was found that individual types of sewing machines emit substantially different EMFs. Depending on the level of EMF emitted at a given workpost, all the machines were classified into three groups: those with weak (O A/m-1.5 A/m); medium (2 A/m-4 A/m); and strong (9 A/m-16 A/m) emissions.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeexposure_assessment
Effect directionunclear
PopulationSeamstresses (work environment in sewing works)
Sample size464
ExposureELF
Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

EMF measurements around 464 industrial sewing machines in five sewing works indicated exposure to 60 Hz EMF. Thirteen machine types were identified, and analysis of variance suggested that EMF emissions differed substantially by machine type. Machines were grouped by emission level into weak (0–1.5 A/m), medium (2–4 A/m), and strong (9–16 A/m) categories.

Outcomes measured

  • Workplace electromagnetic field exposure levels around industrial sewing machines
  • Differences in EMF emissions by sewing machine type
  • Classification of sewing machines by EMF emission strength

Limitations

  • Only the first phase of a broader study is described; pregnancy complications outcomes are not reported in this abstract
  • Exposure metric and measurement protocol details (e.g., distance, duration, instrumentation) are not provided in the abstract
  • Population characteristics and individual exposure variability are not described
View raw extracted JSON
{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "ELF",
    "source": "occupational (industrial sewing machines)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Seamstresses (work environment in sewing works)",
  "sample_size": 464,
  "outcomes": [
    "Workplace electromagnetic field exposure levels around industrial sewing machines",
    "Differences in EMF emissions by sewing machine type",
    "Classification of sewing machines by EMF emission strength"
  ],
  "main_findings": "EMF measurements around 464 industrial sewing machines in five sewing works indicated exposure to 60 Hz EMF. Thirteen machine types were identified, and analysis of variance suggested that EMF emissions differed substantially by machine type. Machines were grouped by emission level into weak (0–1.5 A/m), medium (2–4 A/m), and strong (9–16 A/m) categories.",
  "effect_direction": "unclear",
  "limitations": [
    "Only the first phase of a broader study is described; pregnancy complications outcomes are not reported in this abstract",
    "Exposure metric and measurement protocol details (e.g., distance, duration, instrumentation) are not provided in the abstract",
    "Population characteristics and individual exposure variability are not described"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic fields",
    "ELF",
    "60 Hz",
    "occupational exposure",
    "sewing machines",
    "seamstresses",
    "workplace measurements",
    "A/m"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.9,
      "reason": "Workplace EMF measurements around industrial sewing machines used by seamstresses."
    }
  ]
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: 10582206

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