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流行病学实验研究
释义
流行病学实验研究
Encyclopedia
医学
流行病学实验研究
释
epidemiological experimental study
流行病学实验研究
将研究人群(病人或正常人)随机分为实验组和对照组,研究者对实验组人群施加或除去某种干预措施后,随访观察一段时间并比较两组人群疾病或健康状态的改变,对比分析实验组与对照组之间结局的差别,以验证研究假设和考核干预措施效果的一种实验方法。又称实验流行病学、干预研究等。
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dilute array
dilute atomic gas
diluted bloodstain
diluted magnetic oxide semiconductors
diluted magnetic semiconductor
diluted magnetic semiconductors
diluted radiation
diluted sequence
diluted ventilation
dilute magnetic semiconductor
dilute magnetic semiconductor, DMS
dilute method
dilute phase
dilute phase,^3He-poor phase
dilute-phase pneumatic conveying
diluter
dilute solution
dilution
dilution effect
dilution factor
dilution heat
dilution of a series
dilution of drilling fluid
dilution of precision
dilution ratio
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