“veterinary epidemiology case-control study”的概念、定义、翻译、参考文献-科学参考

单词	veterinary epidemiology case-control study
释义	veterinary epidemiology case-control study Encyclopedia 农学兽医流行病学病例对照研究释 veterinary epidemiology case-control study兽医流行病学病例对照研究选定患某疾病（病例组）和未患病（对照组）的两组动物群体，分别调查其过去暴露于某个（或某些）危险因子的情况及程度，并进行比较分析，判断这个（这些）危险因子与该病有无关联及关联程度大小的观察性研究方法。又称回顾性研究。
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