[HEALTH STATUS OF ELECTROTECHNICAL PERSONNEL EXPOSED TO THE COMBINED IMPACT OF ELECTROMAGNETIC FIELDS OF 50 HZ AND CHEMICALS].

{
  "study_type": "cohort",
  "exposure": {
    "band": "ELF",
    "source": "occupational",
    "frequency_mhz": 0.05,
    "sar_wkg": null,
    "duration": null
  },
  "population": "Male electrical staff/workers at a chemical enterprise",
  "sample_size": null,
  "outcomes": [
    "Cardiovascular diseases incidence",
    "Autonomic disorders/incidence",
    "Autonomic nervous system involvement (suggested)"
  ],
  "main_findings": "In male electrical staff at a chemical enterprise exposed to 50 Hz EMF and chemicals, periodic medical examination data showed a statistically higher incidence of cardiovascular diseases and autonomic disorders. The authors describe the results as preliminary and suggest increased involvement of the autonomic nervous system in response to combined exposures.",
  "effect_direction": "harm",
  "limitations": [
    "Exposure is combined (50 Hz EMF plus chemicals), so effects cannot be attributed to EMF alone based on the abstract",
    "Study design details and control/comparison group are not described in the abstract",
    "Sample size and exposure levels are not reported",
    "Findings are described as preliminary"
  ],
  "evidence_strength": "low",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "50 Hz",
    "ELF EMF",
    "occupational exposure",
    "chemical enterprise",
    "combined exposure",
    "cardiovascular diseases",
    "autonomic disorders",
    "periodic medical examinations"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.9,
      "reason": "Study concerns electrotechnical personnel exposed to EMF at work."
    }
  ]
}