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1 基本概念实验流行病学研究,又称干预研究。大致可分为动物群实验流行病学和现场实验流行病学。由于动物群实验研究的结果,常常不能直接应用于人群,故近年来,许多流行病学工作者更重视在人群中进行实验流行病学研究。所谓干预研究,就是对疾病“因素链”中的某个环节进行“干预”,以期改变发病、死
1 Basic Concepts Experimental epidemiological studies, also known as intervention studies. Can be divided into experimental animal epidemiology and field experimental epidemiology. As the results of experimental studies in fauna often can not be applied directly to the population, many epidemiologists in recent years have paid more attention to conducting experimental epidemiological studies in the population. The so-called intervention research, is the disease “factor chain” in a link “intervention” in order to change the incidence, death