Time-dependent hematological changes in workers exposed to electromagnetic fields.

{
  "study_type": "other",
  "exposure": {
    "band": null,
    "source": "radars and high-frequency radios (occupational)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "average daily exposure; months of exposure; total duration of exposure"
  },
  "population": "workers exposed to EMFs (World War II-era)",
  "sample_size": null,
  "outcomes": [
    "white blood cell count",
    "hematological system changes"
  ],
  "main_findings": "In analysis of a World War II-era worker study, statistically significant correlations were reported between increasing white blood cell count and average daily exposure, months of exposure, and total duration of EMF exposure from radars and high-frequency radios. Reported cell count changes were within the normal range, and the relation to epidemiological studies linking EMFs and leukemia was described as unclear.",
  "effect_direction": "mixed",
  "limitations": [
    "Study described as a World War II-era study analyzed retrospectively (details of original design not provided in abstract)",
    "Sample size not reported in abstract",
    "Exposure metrics (field strength/frequency) not quantified in abstract",
    "Clinical significance unclear because changes were within normal range",
    "Relevance to leukemia risk described as unclear"
  ],
  "evidence_strength": "very_low",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic fields",
    "radar",
    "high-frequency radios",
    "occupational exposure",
    "hematology",
    "white blood cell count",
    "exposure duration",
    "time-dependent changes"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.9,
      "reason": "Study concerns workers exposed to EMFs from radars and high-frequency radios."
    }
  ]
}