epidemiological studies

基本解釋

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(xué)研究發(fā)現(xiàn)，pdd孩子和正常孩子相比較并沒(méi)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(kāi)展的流行病學(xué)研究未發(fā)現(xiàn)飲用水中的氡與消化系統(tǒng)及其它系統(tǒng)的癌癥之間有聯(lián)系。
Scientific evidence on the distribution of cancer in the population can be obtained through carefully planned and executed epidemiological studies.
通過(guò)慎重計(jì)劃和開(kāi)展的流行病學(xué)研究，可獲得關(guān)于癌癥在人群中分布情況的科學(xué)依據(jù)。

"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