The study is the first to use data from a randomized experiment to learn about the connection between neighborhoods and risk of obesity and diabetes, he says.
该研究是第一次利用随机实验数据来获知社区与肥胖及糖尿病之间的联系，他说。
DESIGN: a completely randomized experiment with self-control and mutual control.
设计：完全随机设计，自身及组间对照。
The effects of corn particle size on digestive tract development of young dairy goats were investigated studied by a single-factor completely randomized experiment.
试验采用单因素完全随机试验设计，研究不同玉米粒度对青年奶山羊胃肠道发育的影响。
Dominici said the quasi-experimental approach was a good approximation of a randomized experiment, "especially in this situation where a randomized experiment is not possible. ""
多米尼西说准实验法是近似一个随机实验的很好方法，“尤其是在这种不可能做随机实验的情况下。”
Dominici said the quasi-experimental approach was a good approximation of a randomized experiment, "especially in this situation where a randomized experiment is not possible. ""
多米尼西说准实验法是近似一个随机实验的很好方法，“尤其是在这种不可能做随机实验的情况下。”
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