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A synthesis of studies of access point density as a risk factor for road accidents

机译：接入点密度作为道路事故风险因素的研究综述

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Studies of the relationship between access point density (number of access points, or driveways, per kilometre of road) and accident frequency or rate (number of accidents per unit of exposure) have consistently found that accident rate increases when access point density increases. This paper presents a formal synthesis of the findings of these studies. It was found that the addition of one access point per kilometre of road is associated with an increase of 4% in the expected number of accidents, controlling for traffic volume. Although studies consistently indicate an increase in accident rate as access point density increases, the size of the increase varies substantially between studies. In addition to reviewing studies of access point density as a risk factor, the paper discusses some issues related to formally synthesising regression coefficients by applying the inverse-variance method of meta analysis.
机译：对接入点密度（每公里道路的接入点数或车道数）与事故发生频率或发生率（每单位暴露的事故数）之间关系的研究一致地发现，接入点密度增加时事故率会增加。本文提出了这些研究结果的正式综合。结果发现，每公里道路增加一个接入点，与控制交通量的预期事故数量增加4％有关。尽管研究始终表明事故率随着接入点密度的增加而增加，但增加的幅度在研究之间存在很大差异。除了回顾作为风险因素的接入点密度研究之外，本文还讨论了一些应用元分析的逆方差方法来正式合成回归系数的问题。

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