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epidemiological experimental study
释义
epidemiological experimental study
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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system-bath model
System Biology
system biology
system biology of medicinal Resource
system boundary
system bus
system cabinet
system call
system chart
system compatibility
system complexity
system configuration
System Constraint
system control
system control and metering
system control program
system control unit
system conversion
system CPU time
system crash
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system description
system design
system design of micro electro-mechanical system,system design of MEMS
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