列线图法预测人群归因分值

Making nomogram to estimate the population attributable fraction

人群归因分值（人群归因危险度百分比，PAF）是广大流行病学工作者熟悉的公共卫生学指标。PAF的计算主要根据某个危险因素对某病的相对危险度（RR）和人群中该危险因素的暴露比例（R）。文中介绍由RR和R估计PAF列线图的制作方法，以便快速简捷地估算PAF。

Population attributable fraction （PAF） is an important public health parameter that is familiar to epidemiologists. The calculation of PAF is frequently based on the relative risk （RR） of a risk factor for a certain disease and the prevalence of exposure to the risk factor in the total population （Pe）. We introduce here the method for making a normogram linking PAF to RR and Pe. The nomogram will be very handy for public health professionals in estimating PAF quickly and accurately when information on RR and Pe is available.