RF Safe

Mobile phone use during pregnancy with birth weight: Kumamoto of Japan Environment and Children's Study

2017 · Harm · Low evidence

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HarmLow evidencePaper 2131

Mean infant birth weight was lower in the excessive mobile phone use group than in the ordinary use group. Frequency of infant emergency transport was significantly higher in the excessive use group than in the ordinary use group.

Study snapshot

Publicationmanual · 2017
Study typecohort
Reported directionHarm
Evidence ratingLow

Abstract

Mobile phone use during pregnancy with birth weight: Kumamoto of Japan Environment and Children's Study Lu X, Oda M, Ohba T, Mitsubuchi H, Masuda S, Katoh T. Association of excessive mobile phone use during pregnancy with birth weight: an adjunct study in Kumamoto of Japan Environment and Children's Study. Environ Health Prev Med. 2017 Jun 8;22(1):52. doi: 10.1186/s12199-017-0656-1. Abstract BACKGROUND: Low birth weight has been shown to be closely associated with neonatal mortality and morbidity, inhibited growth, poor cognitive development, and chronic diseases later in life. Some studies have also shown that excessive mobile phone use in the postnatal period may lead to behavioral complications in the children during their growing years; however, the relationship between mobile phone use during pregnancy and neonatal birth weight is not clear. The aim of the present study was to determine the associations of excessive mobile phone use with neonatal birth weight and infant hea lth status. METHODS: A sample of 461 mother and child pairs participated in a survey on maternal characteristics, infant characteristics, and maternal mobile phone usage information during pregnancy. RESULTS: Our results showed that pregnant women tend to excessively use mobile phones in Japan. The mean infant birth weight was lower in the excessive use group than in the ordinary use group, and the frequency of infant emergency transport was significantly higher in the excessive use group than in the ordinary use group. CONCLUSIONS: Excessive mobile phone use during pregnancy may be a risk factor for lower birth weight and a high rate of infant emergency transport. Open access paper: ncbi.nlm.nih.gov

Machine Enhanced Logic

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 typecohort
Effect directionharm
PopulationPregnant women and their infants (mother–child pairs) in Kumamoto, Japan (Japan Environment and Children's Study adjunct study)
Sample size461
ExposureRF · during pregnancy (categorized as excessive vs ordinary use)
Evidence strengthLowConfidence: 72% · Peer reviewed: yes

Main findings

Mean infant birth weight was lower in the excessive mobile phone use group than in the ordinary use group. Frequency of infant emergency transport was significantly higher in the excessive use group than in the ordinary use group.

Outcomes measured

  • Infant birth weight
  • Infant emergency transport frequency
  • Infant health status

Limitations

  • Exposure metric described as mobile phone use (excessive vs ordinary) without RF exposure parameters (e.g., frequency, SAR)
  • Survey-based assessment of maternal mobile phone usage information during pregnancy (potential self-report limitations not further detailed in abstract)
View raw extracted JSON
{
  "study_type": "cohort",
  "exposure": {
    "band": "RF",
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "during pregnancy (categorized as excessive vs ordinary use)"
  },
  "population": "Pregnant women and their infants (mother–child pairs) in Kumamoto, Japan (Japan Environment and Children's Study adjunct study)",
  "sample_size": 461,
  "outcomes": [
    "Infant birth weight",
    "Infant emergency transport frequency",
    "Infant health status"
  ],
  "main_findings": "Mean infant birth weight was lower in the excessive mobile phone use group than in the ordinary use group. Frequency of infant emergency transport was significantly higher in the excessive use group than in the ordinary use group.",
  "effect_direction": "harm",
  "limitations": [
    "Exposure metric described as mobile phone use (excessive vs ordinary) without RF exposure parameters (e.g., frequency, SAR)",
    "Survey-based assessment of maternal mobile phone usage information during pregnancy (potential self-report limitations not further detailed in abstract)"
  ],
  "evidence_strength": "low",
  "confidence": 0.72,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "mobile phone",
    "pregnancy",
    "birth weight",
    "low birth weight",
    "infant emergency transport",
    "Japan Environment and Children's Study",
    "Kumamoto"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones-pregnancy",
      "weight": 0.9,
      "reason": "Study examines maternal mobile phone use during pregnancy and infant outcomes (birth weight, emergency transport)."
    }
  ]
}
AI can be wrong. Always verify against the paper.

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: 10.1186/s12199-017-0656-1
PubMed: Not supplied

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