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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
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农学
兽医流行病学病例对照研究
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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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total ordered set
total ordering
total organic carbon
total organic carbon (TOC)
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total output
total output of services in support of agriculture, forestry, animal husbandry and fishery industries
total ozone column concentration
total payoff
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total perspective
total phosphorus and total nitrogen measuring instrument in seawater
total phosphorus in water
total pollutant emission control system
total pollutant load limits of water function zone
total Pontryagin class
total population of a city
total pore volume
total positivity
total-power receiver
total-power telescope
total predicate
total pressure
total pressure distortion
total pressure gauge
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