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兽医流行病学病例对照研究
释义
兽医流行病学病例对照研究
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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countably equivalent sets
countably generated module
countably Hilbertian space
countably infinite
countably infinite set
countably infinite system
countably many
countably multiplicative class
countably normed space
countably paracompact space
countably semi-additive function
countably subadditive function
countably superadditive function
countably zero-dimensional space
count by groups
count by twos
countdown
Countee Cullen
countenance model
counter
counter-
counter acting force
counteraction
counter anti-radiation attack
counter appeal
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