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On the importance of quantification
  1. Dana Loomis
  1. Correspondence to Professor Dana Loomis, Department of Epidemiology, University of Nebraska, Nebraska Medical Center, Omaha, NE 68198, USA; dana.loomis{at}

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Papers published in Occupational and Environmental Medicine (OEM) often figure prominently in risk assessments carried out by governments and independent agencies. For example, two papers we published provided key evidence in the recent determination by the International Agency for Research on Cancer that radiofrequency electromagnetic fields are possibly carcinogenic.1 ,2 Risk assessments are increasingly required for setting occupational and environmental health standards, and their quality depends heavily on the availability of quantitative data on exposure and disease occurrence. Quantitative exposure–response data are valuable in the hazard-identification stage of risk assessment in which they are used to assess the evidence for causality, and they are essential for quantitative assessments that seek …

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