Electromagnetic fields from mobile phone base station - variability analysis.

{
  "study_type": "exposure_assessment",
  "exposure": {
    "band": "RF",
    "source": "base station",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "long-term monitoring; daily changes"
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Characterization of EMF in mobile phone base station surroundings",
    "Temporal variability of measured EMF levels",
    "Trends in EMF spectrum changes (daily changes)",
    "Measurement difficulties due to pulse and multi-frequency nature"
  ],
  "main_findings": "The article reports long-term monitoring measurements of EMF levels in mobile phone base station surroundings at different locations in Poland and analyzes daily changes to identify trends in the EMF spectrum. It emphasizes measurement difficulties related to the pulsed and multi-frequency nature of the fields and describes use of selective EMF meters and spectrum analysis.",
  "effect_direction": "unclear",
  "limitations": [
    "No health outcomes assessed (exposure characterization only)",
    "Frequency range and quantitative exposure levels not stated in the abstract",
    "Sample size/number of sites and monitoring duration not specified"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic field",
    "EMF",
    "radiofrequency",
    "mobile phone",
    "base station",
    "environmental monitoring",
    "spectrum analysis",
    "temporal variability",
    "Poland",
    "urban",
    "measurement"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.1,
      "reason": "Mentions measurement difficulties and monitoring methods, but no occupational setting is specified."
    }
  ]
}