The problem, though, is that these are population studies.

问题是这些仅仅是人口调查。

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Those researching social science, economic and population studies thought more about factors such as society, the economy and culture.

研究社会科学，经济学、人口学的人，更多地考虑社会、经济、人文的各种因素。

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A number of population studies have revealed that moderate drinkers of red wine have less heart disease than non-drinkers.

相当多人口研究已经揭示与不饮红葡萄酒者相比较，饮红葡萄酒不过量的人较少得有心血管疾病。

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In the United States, public opinion studies have shown that less than half the population believes in evolution.

VOA: special.2009.02.25

So more than doubling the risk can certainly site to the population Now these kind of results show how important it is to do studies that don't group everybody in the population together.

由图可见,发病率差异量超过一倍,这些研究结果表明,在研究过程中分组的重要性

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But the fact that reducing cholesterol is considered good for you in the first place, depends on these kinds of studies on population intake to know how much cholesterol people are eating and then link it to reports of heart disease, or cancer, or whatever the health outcome is.

但减少胆固醇这个事实,首先对你来说是好的,依据这些关于总体摄入量的研究可以知道,人们摄入胆固醇的多少,关系到心脏疾病,或癌症或其他健康问题

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Professor Richard Bedford from Population Studies Centre at the University of Waikato highlighted the major changes taking place.

UNESCO: Ethnic Diversity Broadcasting Forum, June 2009

They called for improved diagnostic tests, and larger population studies to test the theory further.

BBC: Clues to dioxin danger

Because these kinds of benefits show up only in big population studies, they will be difficult to prove beyond a doubt.

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