Estimates of Environmental Exposure to RF EMF and Risk of Lymphoma Subtypes

2018 · Mixed · Low evidence

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MixedLow evidencePaper 2134

In self-reported data, residence within 50 m of fixed radio-television transmitters was associated with elevated lymphoma risk overall (OR 2.7, 95% CI 1.5–4.6) and for major subtypes. No association was observed with mobile phone base stations using either se…

Study snapshot

Publicationmanual · 2018

Study typecase_control

Reported directionMixed

Evidence ratingLow

Abstract

Estimates of Environmental Exposure to RF EMF and Risk of Lymphoma Subtypes G. Satta, N. Mascia, T. Serra, A. Salis, L. Saba, S. Sanna, M. G. Zucca, E. Angelucci, A. Gabbas, F. Culurgioni, P. Pili, E. Mura, M. Cappai, M. G. Ennas, and P. Cocco (2018) Estimates of Environmental Exposure to Radiofrequency Electromagnetic Fields and Risk of Lymphoma Subtypes. Radiation Research In-Press. doi.org We investigated the association between environmental exposure to radiofrequency electromagnetic fields (RF- EMF) and risk of lymphoma subtypes in a case-control study comprised of 322 patients and 444 individuals serving as controls in Sardinia, Italy in 1998-2004. Questionnaire information included the self-reported distance of the three longest held residential addresses from fixed radio-television transmitters and mobile phone base stations. We georeferenced the residential addresses of all study subjects and obtained the spatial coordinates of mobile phone base stations. For each address within a 500-meter radius from a mobile phone base station, we estimated the RF-EMF intensity using predictions from spatial models, and we performed RF-EMF measurements at the door in the subset of the longest held addresses within a 250-meter radius. We calculated risk of lymphoma and its major subtypes associated with the RF-EMF exposure metrics with unconditional logistic regression, adjusting by age, gender and years of education. In the analysis of self-reported data, risk associated with residence in proximity (within 50 meters) to fixed radio-television transmitters was likewise elevated for lymphoma overall [odds ratio = 2.7, 95% confidence interval = 1.5-4.6], and for the major lymphoma subtypes. With reference to mobile phone base stations, we did not observe an association with either the self-reported, or the geocoded distance from mobile phone base stations. RF-EMF measurements did not vary by case-control status. By comparing the self-reports to the geocoded data, we discovered that the cases tended to underestimate the distance from mobile phone base stations differentially from the controls (P = 0.073). The interpretation of our findings is compromised by the limited study size, particularly in the analysis of the individual lymphoma subtypes, and the unavailability of the spatial coordinates of radio-television transmitters. Nonetheless, our results do not support the hypothesis of a link between environmental exposure to RF-EMF from mobile phone base stations and risk of lymphoma subtypes. ncbi.nlm.nih.gov

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typecase_control

Effect directionmixed

PopulationCases (lymphoma patients) and controls in Sardinia, Italy (1998–2004)

Sample size766

ExposureRF · Residential exposure based on three longest-held addresses (1998–2004); distance-based metrics; modeled intensity within 500 m; door measurements for subset within 250 m

Evidence strengthLowConfidence: 78% · Peer reviewed: unknown

Main findings

Outcomes measured

Lymphoma (overall)
Major lymphoma subtypes

Limitations

Limited study size, particularly for analyses of individual lymphoma subtypes
Unavailability of spatial coordinates of radio-television transmitters
Cases tended to underestimate distance from mobile phone base stations compared with controls (differential misclassification; P=0.073)

View raw extracted JSON

{
  "study_type": "case_control",
  "exposure": {
    "band": "RF",
    "source": "radio-television transmitters and mobile phone base stations",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "Residential exposure based on three longest-held addresses (1998–2004); distance-based metrics; modeled intensity within 500 m; door measurements for subset within 250 m"
  },
  "population": "Cases (lymphoma patients) and controls in Sardinia, Italy (1998–2004)",
  "sample_size": 766,
  "outcomes": [
    "Lymphoma (overall)",
    "Major lymphoma subtypes"
  ],
  "main_findings": "In self-reported data, residence within 50 m of fixed radio-television transmitters was associated with elevated lymphoma risk overall (OR 2.7, 95% CI 1.5–4.6) and for major subtypes. No association was observed with mobile phone base stations using either self-reported or geocoded distance, and RF-EMF door measurements did not vary by case-control status.",
  "effect_direction": "mixed",
  "limitations": [
    "Limited study size, particularly for analyses of individual lymphoma subtypes",
    "Unavailability of spatial coordinates of radio-television transmitters",
    "Cases tended to underestimate distance from mobile phone base stations compared with controls (differential misclassification; P=0.073)"
  ],
  "evidence_strength": "low",
  "confidence": 0.78,
  "peer_reviewed_likely": "unknown",
  "keywords": [
    "radiofrequency electromagnetic fields",
    "RF-EMF",
    "environmental exposure",
    "mobile phone base stations",
    "radio-television transmitters",
    "distance to source",
    "geocoding",
    "spatial models",
    "case-control",
    "lymphoma",
    "lymphoma subtypes",
    "Sardinia"
  ],
  "suggested_hubs": [
    {
      "slug": "who-icnirp",
      "weight": 0.2,
      "reason": "Addresses environmental RF-EMF exposure and cancer risk, relevant to guideline/policy discussions."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1667/rr14952.1
PubMed: Not supplied

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