请输入您要查询的字词:
单词
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。
随便看
photographic latent image
photographic layer
photographic lens
photographic lenses
photographic light
photographic light curve
photographic lighting
photographic magnetograph
photographic magnitude
photographic material
photographic materials
photographic measurement
photographic meridian circle
photographic meteor
photographic noise
photographic objective
photographic observation
Photographic Perport of China Hope Project I Desire to Go to School
photographic photometer
photographic photometry
photographic plate
photographic postcards of current events
photographic processing
photographic radiant
Photographic Realism
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2026/1/3 8:51:59