epidemiological studies

基本解释

But epidemiological studies have found no higher prevalence of GI problems among children with PDD compared to normally developing children.
但是，流行病學研究發現，pdd孩子和正常孩子相比較竝沒有更高的胃腸道患病率。
To date, epidemiological studies have not found an association between radon in drinking water and cancer of the digestive and other systems.
迄今開展的流行病學研究未發現飲用水中的氡與消化系統及其它系統的癌症之間有聯系。
Scientific evidence on the distribution of cancer in the population can be obtained through carefully planned and executed epidemiological studies.
通過慎重計劃和開展的流行病學研究，可獲得關於癌症在人群中分佈情況的科學依據。

"Now,with large epidemiological studies done everywhere including here, we can say with a great level of confidence that the disease affects roughly the same percentage of the general public worldwide.
Hope Ferdowsian of the Physicians Committee says "For example,in HIV research, we've learned a lot from human epidemiological studies and ethically conducted clinical trials."

The first clinical and epidemiological studies linking cigarette-smoking and lung cancer were published only in 1950.
ECONOMIST: Tobacco
The manufacturer says it's working on two epidemiological studies, but wouldn't give further details.
NPR: FDA Orders Label For Contraceptive Patch