[Biological effects and health risks of electromagnetic fields at levels classified by INCRIP ans admissible among occupationally exposed workers: a study of the Nofer Institute of Occupational Medicine, Lodz].

{
  "study_type": "cohort",
  "exposure": {
    "band": null,
    "source": "occupational",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "short-term (maximum values) and chronic (daily and lifetime doses) exposures"
  },
  "population": "Workers employed in transformer and distribution stations, medium wave transmitting stations, radio-service and radio and TV multichannel broadcasting stations",
  "sample_size": null,
  "outcomes": [
    "Circulatory system changes/disorders",
    "Blood pressure",
    "Neurovegetative regulation disorders"
  ],
  "main_findings": "Among occupationally exposed workers, exposure levels were reported as considerably lower than ICNIRP admissible limits. Nevertheless, circulatory system changes were observed, and blood pressure and neurovegetative regulation disorders showed significant relationships with exposure parameters; frequency of circulatory changes depended on both maximum field values and dose (daily/lifetime).",
  "effect_direction": "harm",
  "limitations": [
    "Sample size not reported in abstract",
    "Specific EMF frequencies/metrics not reported in abstract",
    "Study design details (comparison group, follow-up, confounder control) not described in abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic fields",
    "occupational exposure",
    "ICNIRP standards",
    "circulatory system",
    "blood pressure",
    "neurovegetative regulation",
    "dose-response",
    "transformer stations",
    "broadcasting stations"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.95,
      "reason": "Study evaluates EMF exposure and circulatory outcomes among occupationally exposed workers in multiple station types."
    },
    {
      "slug": "who-icnirp",
      "weight": 0.75,
      "reason": "Abstract explicitly discusses exposure levels relative to ICNIRP admissible limits and implications for hygiene standards."
    }
  ]
}