The aim of this study was to evaluate whether distance data based on calculations by use of digitalized geographical information systems (GIS) and distance data based on measurements on 1:5000 maps agree sufficiently with on site distance measurements to be used as input to magnetic field calculations in epidemiological studies. The analysis were performed by use of weighted kappa (kappa(w)) statistical method described by Bland and Altman for comparison of measures of agreement. Map measurements showed better agreement with on site measurements than GIS calculations did. However, we consider both methods appropriate for use in larger epidemiological studies if the results are interpreted with caution. GIS calculations have the advantage of being both time and cost saving.

中文翻译：

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三种不同的测量住宅与高压电力线之间距离的方式的比较。

这项研究的目的是评估基于使用数字化地理信息系统（GIS）进行计算的距离数据和基于1：5000地图上的测量值的距离数据是否与现场距离测量值足够一致，以用作磁场输入流行病学研究中的计算。通过使用Bland和Altman描述的加权Kappa（kappa（w））统计方法进行分析，以比较一致性度量。与GIS计算相比，地图测量结果与现场测量结果具有更好的一致性。但是，如果谨慎解释结果，我们认为这两种方法均适用于较大的流行病学研究。GIS计算具有节省时间和成本的优势。