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Ａ 流行病学研究中的因果推论Ａ１１７ 何为因果推论？其基本步骤是什么？答：因果推论是指研究者根据流行病学研究资料，对某因素与某疾病（或健康状况）之间的因果关系作出正确判断的论证过程。其基本步骤包括：１．确定两事件间是否存在统计学上的联系。两事件间若存在因
A Causal inference in epidemiological research A117 What is causal inference? What are the basic steps? A: Causal inferences refer to the process by which researchers make correct judgments about a causal relationship between a factor and a disease (or state of health) based on epidemiological research data. The basic steps include: 1. Determine whether there is a statistical connection between the two events. If there is a difference between the two events