Electromagnetic Radiation Exposure and Childhood Leukemia: Meta-Analysis and Systematic Review

{
  "publication_year": null,
  "study_type": "meta_analysis",
  "exposure": {
    "band": "ELF",
    "source": "residential",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "24-hour magnetic field measurements (in some included analyses)"
  },
  "population": "Children/adolescents (pediatric/childhood leukemia)",
  "sample_size": null,
  "outcomes": [
    "Childhood/pediatric leukemia risk",
    "Association with residential magnetic field exposure (μT ranges)",
    "Association with wiring configuration codes",
    "Association with distance to magnetic field source (<100 m vs closer)"
  ],
  "main_findings": "The review reports mixed results across three meta-analyses of residential magnetic field exposure and childhood leukemia. It reports increased pooled risk estimates for some exposure assessments (e.g., wiring configuration codes and 24-hour measurements), while also reporting no statistically significant association at 0.2 μT and an inverse association in one analysis for 0.4–0.2 μT.",
  "effect_direction": "mixed",
  "limitations": [],
  "evidence_strength": "high",
  "confidence": 0.66,
  "peer_reviewed_likely": "yes",
  "stance": "concern",
  "stance_confidence": 0.6,
  "summary": "This systematic review and meta-analysis examined studies up to December 15, 2022 on residential magnetic field exposure and childhood leukemia. It reports elevated pooled risk estimates in analyses using wiring configuration codes and 24-hour magnetic field measurements, alongside other analyses showing no statistically significant association at certain exposure levels. Overall, the abstract concludes there is a statistically significant association between magnetic field intensity (0.1–2.38 μT) and childhood leukemia, but notes at least one analysis found no apparent relationship at 0.1 μT.",
  "key_points": [
    "The authors conducted database searches (Scopus, EMBASE, Cochrane, Web of Science, Medline) through December 15, 2022.",
    "One meta-analysis reported a statistically significant inverse association for magnetic field strengths between 0.4 μT and 0.2 μT.",
    "A meta-analysis of wiring configuration codes reported a potential link between residential magnetic field exposure and childhood leukemia.",
    "Pooled relative risk estimates of 1.52 and 1.58 were reported for exposure based on 24-hour magnetic field measurements.",
    "Another meta-analysis reported odds ratios across exposure groups (0.1–0.4 μT and above) that were not described as statistically significant in the abstract.",
    "The abstract states there was no statistically significant connection between exposure to 0.2 μT and juvenile leukemia risk.",
    "Distance-based comparison (<100 m vs closer) showed no discernible difference (OR 1.33; 95% CI 0.98–1.73)."
  ],
  "categories": [
    "Epidemiology",
    "Cancer",
    "Power Lines & Residential ELF"
  ],
  "tags": [
    "Childhood Leukemia",
    "Pediatric Cancer",
    "Residential Magnetic Fields",
    "Extremely Low Frequency (ELF)",
    "Systematic Review",
    "Meta-Analysis",
    "Wiring Configuration Codes",
    "24-Hour Magnetic Field Measurement",
    "Distance to Source"
  ],
  "keywords": [
    "childhood leukemia",
    "pediatric leukemia",
    "magnetic fields",
    "residential exposure",
    "wiring configuration codes",
    "24-hour measurements",
    "meta-analysis",
    "systematic review",
    "μT"
  ],
  "suggested_hubs": [
    {
      "slug": "power-lines",
      "weight": 0.9,
      "reason": "Focus on residential magnetic field exposure in μT ranges and wiring configuration codes, commonly used in power-line ELF epidemiology."
    }
  ],
  "social": {
    "tweet": "Systematic review/meta-analysis (search to Dec 2022) reports mixed findings on residential magnetic fields and childhood leukemia: elevated pooled risks in wiring-code/24‑hour measurement analyses, but no significant association at some exposure levels (e.g., 0.2 μT) and an inverse association in one range.",
    "facebook": "A 2023 systematic review and meta-analysis examined studies on residential magnetic field exposure and childhood leukemia. The abstract reports increased pooled risks in analyses using wiring configuration codes and 24-hour measurements, alongside other analyses showing no statistically significant association at certain exposure levels.",
    "linkedin": "A 2023 systematic review/meta-analysis evaluated evidence (to Dec 15, 2022) on residential magnetic field exposure and childhood leukemia. The abstract reports mixed results: elevated pooled risks in wiring-code and 24-hour measurement analyses, but null findings at some exposure thresholds and an inverse association in one range."
  }
}