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A生态学研究A51何为生态学研究？答：生态学研究（ecologicstudies）是描述性流行病学研究方法的一种。它是在群体水平上研究因素与疾病之间的关系，即以群体为观察、分析单位，通过描述不同人群中某因素的暴露情况与疾病的频率，分析该因素与疾病的关系。生态学研究与其它研究
A ecological research A51 What is ecological research? A: Ecologic studies are one of the descriptive epidemiological approaches. It is at the group level research factors and the relationship between the disease, that the community as a unit of observation, analysis of different factors in a population through the exposure and disease frequency, analysis of the relationship between the factor and the disease. Ecology and other research